diff options
13 files changed, 1387 insertions, 0 deletions
diff --git a/compiler/rustc_mir/src/transform/early_otherwise_branch.rs b/compiler/rustc_mir/src/transform/early_otherwise_branch.rs new file mode 100644 index 00000000000..67e679a8b08 --- /dev/null +++ b/compiler/rustc_mir/src/transform/early_otherwise_branch.rs @@ -0,0 +1,339 @@ +use crate::{ + transform::{MirPass, MirSource}, + util::patch::MirPatch, +}; +use rustc_middle::mir::*; +use rustc_middle::ty::{Ty, TyCtxt}; +use std::{borrow::Cow, fmt::Debug}; + +use super::simplify::simplify_cfg; + +/// This pass optimizes something like +/// ```text +/// let x: Option<()>; +/// let y: Option<()>; +/// match (x,y) { +/// (Some(_), Some(_)) => {0}, +/// _ => {1} +/// } +/// ``` +/// into something like +/// ```text +/// let x: Option<()>; +/// let y: Option<()>; +/// let discriminant_x = // get discriminant of x +/// let discriminant_y = // get discriminant of y +/// if discriminant_x != discriminant_y || discriminant_x == None {1} else {0} +/// ``` +pub struct EarlyOtherwiseBranch; + +impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch { + fn run_pass(&self, tcx: TyCtxt<'tcx>, source: MirSource<'tcx>, body: &mut Body<'tcx>) { + if tcx.sess.opts.debugging_opts.mir_opt_level < 1 { + return; + } + trace!("running EarlyOtherwiseBranch on {:?}", source); + // we are only interested in this bb if the terminator is a switchInt + let bbs_with_switch = + body.basic_blocks().iter_enumerated().filter(|(_, bb)| is_switch(bb.terminator())); + + let opts_to_apply: Vec<OptimizationToApply<'tcx>> = bbs_with_switch + .flat_map(|(bb_idx, bb)| { + let switch = bb.terminator(); + let helper = Helper { body, tcx }; + let infos = helper.go(bb, switch)?; + Some(OptimizationToApply { infos, basic_block_first_switch: bb_idx }) + }) + .collect(); + + let should_cleanup = !opts_to_apply.is_empty(); + + for opt_to_apply in opts_to_apply { + trace!("SUCCESS: found optimization possibility to apply: {:?}", &opt_to_apply); + + let statements_before = + body.basic_blocks()[opt_to_apply.basic_block_first_switch].statements.len(); + let end_of_block_location = Location { + block: opt_to_apply.basic_block_first_switch, + statement_index: statements_before, + }; + + let mut patch = MirPatch::new(body); + + // create temp to store second discriminant in + let discr_type = opt_to_apply.infos[0].second_switch_info.discr_ty; + let discr_span = opt_to_apply.infos[0].second_switch_info.discr_source_info.span; + let second_discriminant_temp = patch.new_temp(discr_type, discr_span); + + patch.add_statement( + end_of_block_location, + StatementKind::StorageLive(second_discriminant_temp), + ); + + // create assignment of discriminant + let place_of_adt_to_get_discriminant_of = + opt_to_apply.infos[0].second_switch_info.place_of_adt_discr_read; + patch.add_assign( + end_of_block_location, + Place::from(second_discriminant_temp), + Rvalue::Discriminant(place_of_adt_to_get_discriminant_of), + ); + + // create temp to store NotEqual comparison between the two discriminants + let not_equal = BinOp::Ne; + let not_equal_res_type = not_equal.ty(tcx, discr_type, discr_type); + let not_equal_temp = patch.new_temp(not_equal_res_type, discr_span); + patch.add_statement(end_of_block_location, StatementKind::StorageLive(not_equal_temp)); + + // create NotEqual comparison between the two discriminants + let first_descriminant_place = + opt_to_apply.infos[0].first_switch_info.discr_used_in_switch; + let not_equal_rvalue = Rvalue::BinaryOp( + not_equal, + Operand::Copy(Place::from(second_discriminant_temp)), + Operand::Copy(Place::from(first_descriminant_place)), + ); + patch.add_statement( + end_of_block_location, + StatementKind::Assign(box (Place::from(not_equal_temp), not_equal_rvalue)), + ); + + let (mut targets_to_jump_to, values_to_jump_to): (Vec<_>, Vec<_>) = opt_to_apply + .infos + .iter() + .flat_map(|x| x.second_switch_info.targets_with_values.iter()) + .cloned() + .unzip(); + + // add otherwise case in the end + targets_to_jump_to.push(opt_to_apply.infos[0].first_switch_info.otherwise_bb); + // new block that jumps to the correct discriminant case. This block is switched to if the discriminants are equal + let new_switch_data = BasicBlockData::new(Some(Terminator { + source_info: opt_to_apply.infos[0].second_switch_info.discr_source_info, + kind: TerminatorKind::SwitchInt { + // the first and second discriminants are equal, so just pick one + discr: Operand::Copy(first_descriminant_place), + switch_ty: discr_type, + values: Cow::from(values_to_jump_to), + targets: targets_to_jump_to, + }, + })); + + let new_switch_bb = patch.new_block(new_switch_data); + + // switch on the NotEqual. If true, then jump to the `otherwise` case. + // If false, then jump to a basic block that then jumps to the correct disciminant case + let true_case = opt_to_apply.infos[0].first_switch_info.otherwise_bb; + let false_case = new_switch_bb; + patch.patch_terminator( + opt_to_apply.basic_block_first_switch, + TerminatorKind::if_( + tcx, + Operand::Move(Place::from(not_equal_temp)), + true_case, + false_case, + ), + ); + + // generate StorageDead for the second_discriminant_temp not in use anymore + patch.add_statement( + end_of_block_location, + StatementKind::StorageDead(second_discriminant_temp), + ); + + // Generate a StorageDead for not_equal_temp in each of the targets, since we moved it into the switch + for bb in [false_case, true_case].iter() { + patch.add_statement( + Location { block: *bb, statement_index: 0 }, + StatementKind::StorageDead(not_equal_temp), + ); + } + + patch.apply(body); + } + + // Since this optimization adds new basic blocks and invalidates others, + // clean up the cfg to make it nicer for other passes + if should_cleanup { + simplify_cfg(body); + } + } +} + +fn is_switch<'tcx>(terminator: &Terminator<'tcx>) -> bool { + match terminator.kind { + TerminatorKind::SwitchInt { .. } => true, + _ => false, + } +} + +struct Helper<'a, 'tcx> { + body: &'a Body<'tcx>, + tcx: TyCtxt<'tcx>, +} + +#[derive(Debug, Clone)] +struct SwitchDiscriminantInfo<'tcx> { + /// Type of the discriminant being switched on + discr_ty: Ty<'tcx>, + /// The basic block that the otherwise branch points to + otherwise_bb: BasicBlock, + /// Target along with the value being branched from. Otherwise is not included + targets_with_values: Vec<(BasicBlock, u128)>, + discr_source_info: SourceInfo, + /// The place of the discriminant used in the switch + discr_used_in_switch: Place<'tcx>, + /// The place of the adt that has its discriminant read + place_of_adt_discr_read: Place<'tcx>, + /// The type of the adt that has its discriminant read + type_adt_matched_on: Ty<'tcx>, +} + +#[derive(Debug)] +struct OptimizationToApply<'tcx> { + infos: Vec<OptimizationInfo<'tcx>>, + /// Basic block of the original first switch + basic_block_first_switch: BasicBlock, +} + +#[derive(Debug)] +struct OptimizationInfo<'tcx> { + /// Info about the first switch and discriminant + first_switch_info: SwitchDiscriminantInfo<'tcx>, + /// Info about the second switch and discriminant + second_switch_info: SwitchDiscriminantInfo<'tcx>, +} + +impl<'a, 'tcx> Helper<'a, 'tcx> { + pub fn go( + &self, + bb: &BasicBlockData<'tcx>, + switch: &Terminator<'tcx>, + ) -> Option<Vec<OptimizationInfo<'tcx>>> { + // try to find the statement that defines the discriminant that is used for the switch + let discr = self.find_switch_discriminant_info(bb, switch)?; + + // go through each target, finding a discriminant read, and a switch + let results = discr.targets_with_values.iter().map(|(target, value)| { + self.find_discriminant_switch_pairing(&discr, target.clone(), value.clone()) + }); + + // if the optimization did not apply for one of the targets, then abort + if results.clone().any(|x| x.is_none()) || results.len() == 0 { + trace!("NO: not all of the targets matched the pattern for optimization"); + return None; + } + + Some(results.flatten().collect()) + } + + fn find_discriminant_switch_pairing( + &self, + discr_info: &SwitchDiscriminantInfo<'tcx>, + target: BasicBlock, + value: u128, + ) -> Option<OptimizationInfo<'tcx>> { + let bb = &self.body.basic_blocks()[target]; + // find switch + let terminator = bb.terminator(); + if is_switch(terminator) { + let this_bb_discr_info = self.find_switch_discriminant_info(bb, terminator)?; + + // the types of the two adts matched on have to be equalfor this optimization to apply + if discr_info.type_adt_matched_on != this_bb_discr_info.type_adt_matched_on { + trace!( + "NO: types do not match. LHS: {:?}, RHS: {:?}", + discr_info.type_adt_matched_on, + this_bb_discr_info.type_adt_matched_on + ); + return None; + } + + // the otherwise branch of the two switches have to point to the same bb + if discr_info.otherwise_bb != this_bb_discr_info.otherwise_bb { + trace!("NO: otherwise target is not the same"); + return None; + } + + // check that the value being matched on is the same. The + if this_bb_discr_info.targets_with_values.iter().find(|x| x.1 == value).is_none() { + trace!("NO: values being matched on are not the same"); + return None; + } + + // only allow optimization if the left and right of the tuple being matched are the same variants. + // so the following should not optimize + // ```rust + // let x: Option<()>; + // let y: Option<()>; + // match (x,y) { + // (Some(_), None) => {}, + // _ => {} + // } + // ``` + // We check this by seeing that the value of the first discriminant is the only other discriminant value being used as a target in the second switch + if !(this_bb_discr_info.targets_with_values.len() == 1 + && this_bb_discr_info.targets_with_values[0].1 == value) + { + trace!( + "NO: The second switch did not have only 1 target (besides otherwise) that had the same value as the value from the first switch that got us here" + ); + return None; + } + + // if we reach this point, the optimization applies, and we should be able to optimize this case + // store the info that is needed to apply the optimization + + Some(OptimizationInfo { + first_switch_info: discr_info.clone(), + second_switch_info: this_bb_discr_info, + }) + } else { + None + } + } + + fn find_switch_discriminant_info( + &self, + bb: &BasicBlockData<'tcx>, + switch: &Terminator<'tcx>, + ) -> Option<SwitchDiscriminantInfo<'tcx>> { + match &switch.kind { + TerminatorKind::SwitchInt { discr, targets, values, .. } => { + let discr_local = discr.place()?.as_local()?; + // the declaration of the discriminant read. Place of this read is being used in the switch + let discr_decl = &self.body.local_decls()[discr_local]; + let discr_ty = discr_decl.ty; + // the otherwise target lies as the last element + let otherwise_bb = targets.get(values.len())?.clone(); + let targets_with_values = targets + .iter() + .zip(values.iter()) + .map(|(t, v)| (t.clone(), v.clone())) + .collect(); + + // find the place of the adt where the discriminant is being read from + // assume this is the last statement of the block + let place_of_adt_discr_read = match bb.statements.last()?.kind { + StatementKind::Assign(box (_, Rvalue::Discriminant(adt_place))) => { + Some(adt_place) + } + _ => None, + }?; + + let type_adt_matched_on = place_of_adt_discr_read.ty(self.body, self.tcx).ty; + + Some(SwitchDiscriminantInfo { + discr_used_in_switch: discr.place()?, + discr_ty, + otherwise_bb, + targets_with_values, + discr_source_info: discr_decl.source_info, + place_of_adt_discr_read, + type_adt_matched_on, + }) + } + _ => unreachable!("must only be passed terminator that is a switch"), + } + } +} diff --git a/compiler/rustc_mir/src/transform/mod.rs b/compiler/rustc_mir/src/transform/mod.rs index fc9854ba499..abe2dc496a6 100644 --- a/compiler/rustc_mir/src/transform/mod.rs +++ b/compiler/rustc_mir/src/transform/mod.rs @@ -26,6 +26,7 @@ pub mod copy_prop; pub mod deaggregator; pub mod dest_prop; pub mod dump_mir; +pub mod early_otherwise_branch; pub mod elaborate_drops; pub mod generator; pub mod inline; @@ -465,6 +466,7 @@ fn run_optimization_passes<'tcx>( &instcombine::InstCombine, &const_prop::ConstProp, &simplify_branches::SimplifyBranches::new("after-const-prop"), + &early_otherwise_branch::EarlyOtherwiseBranch, &simplify_comparison_integral::SimplifyComparisonIntegral, &simplify_try::SimplifyArmIdentity, &simplify_try::SimplifyBranchSame, diff --git a/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..386726bfddc --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff @@ -0,0 +1,77 @@ +- // MIR for `opt1` before EarlyOtherwiseBranch ++ // MIR for `opt1` after EarlyOtherwiseBranch + + fn opt1(_1: Option<u32>, _2: Option<u32>) -> u32 { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch.rs:3:9: 3:10 + debug y => _2; // in scope 0 at $DIR/early_otherwise_branch.rs:3:25: 3:26 + let mut _0: u32; // return place in scope 0 at $DIR/early_otherwise_branch.rs:3:44: 3:47 + let mut _3: (std::option::Option<u32>, std::option::Option<u32>); // in scope 0 at $DIR/early_otherwise_branch.rs:4:11: 4:17 + let mut _4: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch.rs:4:12: 4:13 + let mut _5: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch.rs:4:15: 4:16 + let mut _6: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 + let _8: u32; // in scope 0 at $DIR/early_otherwise_branch.rs:5:15: 5:16 + let _9: u32; // in scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25 ++ let mut _10: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 ++ let mut _11: bool; // in scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 + scope 1 { + debug a => _8; // in scope 1 at $DIR/early_otherwise_branch.rs:5:15: 5:16 + debug b => _9; // in scope 1 at $DIR/early_otherwise_branch.rs:5:24: 5:25 + } + + bb0: { + StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch.rs:4:11: 4:17 + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch.rs:4:12: 4:13 + _4 = _1; // scope 0 at $DIR/early_otherwise_branch.rs:4:12: 4:13 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch.rs:4:15: 4:16 + _5 = _2; // scope 0 at $DIR/early_otherwise_branch.rs:4:15: 4:16 + (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch.rs:4:11: 4:17 + (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch.rs:4:11: 4:17 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch.rs:4:16: 4:17 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch.rs:4:16: 4:17 + _7 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 +- switchInt(move _7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ _10 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ _11 = Ne(_10, _7); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 ++ switchInt(move _11) -> [false: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:5:10: 5:17 + } + + bb1: { ++ StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch.rs:6:14: 6:15 + _0 = const 1_u32; // scope 0 at $DIR/early_otherwise_branch.rs:6:14: 6:15 +- goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6 ++ goto -> bb3; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6 + } + + bb2: { +- _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 +- switchInt(move _6) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 +- } +- +- bb3: { + StorageLive(_8); // scope 0 at $DIR/early_otherwise_branch.rs:5:15: 5:16 + _8 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:5:15: 5:16 + StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25 + _9 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:5:24: 5:25 + _0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch.rs:5:31: 5:32 + StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch.rs:5:31: 5:32 + StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch.rs:5:31: 5:32 +- goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6 ++ goto -> bb3; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 7:6 + } + +- bb4: { ++ bb3: { + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch.rs:8:1: 8:2 + return; // scope 0 at $DIR/early_otherwise_branch.rs:8:2: 8:2 ++ } ++ ++ bb4: { ++ StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 ++ switchInt(_7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:5:19: 5:26 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..bc5934dec84 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff @@ -0,0 +1,91 @@ +- // MIR for `opt2` before EarlyOtherwiseBranch ++ // MIR for `opt2` after EarlyOtherwiseBranch + + fn opt2(_1: Option<u32>, _2: Option<u32>) -> u32 { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch.rs:11:9: 11:10 + debug y => _2; // in scope 0 at $DIR/early_otherwise_branch.rs:11:25: 11:26 + let mut _0: u32; // return place in scope 0 at $DIR/early_otherwise_branch.rs:11:44: 11:47 + let mut _3: (std::option::Option<u32>, std::option::Option<u32>); // in scope 0 at $DIR/early_otherwise_branch.rs:12:11: 12:17 + let mut _4: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch.rs:12:12: 12:13 + let mut _5: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch.rs:12:15: 12:16 + let mut _6: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:13:19: 13:26 + let mut _8: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 + let _9: u32; // in scope 0 at $DIR/early_otherwise_branch.rs:13:15: 13:16 + let _10: u32; // in scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25 ++ let mut _11: isize; // in scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 ++ let mut _12: bool; // in scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 + scope 1 { + debug a => _9; // in scope 1 at $DIR/early_otherwise_branch.rs:13:15: 13:16 + debug b => _10; // in scope 1 at $DIR/early_otherwise_branch.rs:13:24: 13:25 + } + + bb0: { + StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch.rs:12:11: 12:17 + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch.rs:12:12: 12:13 + _4 = _1; // scope 0 at $DIR/early_otherwise_branch.rs:12:12: 12:13 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch.rs:12:15: 12:16 + _5 = _2; // scope 0 at $DIR/early_otherwise_branch.rs:12:15: 12:16 + (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch.rs:12:11: 12:17 + (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch.rs:12:11: 12:17 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch.rs:12:16: 12:17 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch.rs:12:16: 12:17 + _8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 +- switchInt(move _8) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ _11 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ _12 = Ne(_11, _8); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 ++ switchInt(move _12) -> [false: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:13:10: 13:17 + } + + bb1: { +- _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 +- switchInt(move _6) -> [0_isize: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 +- } +- +- bb2: { ++ StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch.rs:15:14: 15:15 + _0 = const 1_u32; // scope 0 at $DIR/early_otherwise_branch.rs:15:14: 15:15 +- goto -> bb6; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 ++ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 + } + +- bb3: { +- _7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:13:19: 13:26 +- switchInt(move _7) -> [1_isize: bb4, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:13:19: 13:26 +- } +- +- bb4: { ++ bb2: { + StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch.rs:13:15: 13:16 + _9 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:13:15: 13:16 + StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25 + _10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch.rs:13:24: 13:25 + _0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch.rs:13:31: 13:32 + StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch.rs:13:31: 13:32 + StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch.rs:13:31: 13:32 +- goto -> bb6; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 ++ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 + } + +- bb5: { ++ bb3: { + _0 = const 0_u32; // scope 0 at $DIR/early_otherwise_branch.rs:14:25: 14:26 +- goto -> bb6; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 ++ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 16:6 + } + +- bb6: { ++ bb4: { + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch.rs:17:1: 17:2 + return; // scope 0 at $DIR/early_otherwise_branch.rs:17:2: 17:2 ++ } ++ ++ bb5: { ++ StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 ++ switchInt(_8) -> [0_isize: bb3, 1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:14:16: 14:20 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch.rs b/src/test/mir-opt/early_otherwise_branch.rs new file mode 100644 index 00000000000..77003442080 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch.rs @@ -0,0 +1,22 @@ +// compile-flags: -Z mir-opt-level=3 +// EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff +fn opt1(x: Option<u32>, y: Option<u32>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + _ => 1, + } +} + +// EMIT_MIR early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff +fn opt2(x: Option<u32>, y: Option<u32>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + (None, None) => 0, + _ => 1, + } +} + +fn main() { + opt1(None, Some(0)); + opt2(None, Some(0)); +} diff --git a/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..b0357f1aecd --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff @@ -0,0 +1,99 @@ +- // MIR for `opt1` before EarlyOtherwiseBranch ++ // MIR for `opt1` after EarlyOtherwiseBranch + + fn opt1(_1: Option<u32>, _2: Option<u32>, _3: Option<u32>) -> u32 { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:4:9: 4:10 + debug y => _2; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:4:25: 4:26 + debug z => _3; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:4:41: 4:42 + let mut _0: u32; // return place in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:4:60: 4:63 + let mut _4: (std::option::Option<u32>, std::option::Option<u32>, std::option::Option<u32>); // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:11: 5:20 + let mut _5: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:12: 5:13 + let mut _6: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:15: 5:16 + let mut _7: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:18: 5:19 + let mut _8: isize; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 + let mut _9: isize; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 + let mut _10: isize; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 + let _11: u32; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16 + let _12: u32; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25 + let _13: u32; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34 ++ let mut _14: isize; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 ++ let mut _15: bool; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 ++ let mut _16: isize; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 ++ let mut _17: bool; // in scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 + scope 1 { + debug a => _11; // in scope 1 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16 + debug b => _12; // in scope 1 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25 + debug c => _13; // in scope 1 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34 + } + + bb0: { + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:11: 5:20 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:12: 5:13 + _5 = _1; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:12: 5:13 + StorageLive(_6); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:15: 5:16 + _6 = _2; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:15: 5:16 + StorageLive(_7); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:18: 5:19 + _7 = _3; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:18: 5:19 + (_4.0: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:11: 5:20 + (_4.1: std::option::Option<u32>) = move _6; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:11: 5:20 + (_4.2: std::option::Option<u32>) = move _7; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:11: 5:20 + StorageDead(_7); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:19: 5:20 + StorageDead(_6); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:19: 5:20 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:19: 5:20 + _10 = discriminant((_4.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 +- switchInt(move _10) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ StorageLive(_14); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ _14 = discriminant((_4.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ StorageLive(_15); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ _15 = Ne(_14, _10); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ StorageDead(_14); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 ++ switchInt(move _15) -> [false: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:10: 6:17 + } + + bb1: { ++ StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:7:14: 7:15 ++ StorageDead(_15); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:7:14: 7:15 + _0 = const 1_u32; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:7:14: 7:15 +- goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6 ++ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6 + } + + bb2: { +- _9 = discriminant((_4.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 +- switchInt(move _9) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 +- } +- +- bb3: { + _8 = discriminant((_4.2: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 +- switchInt(move _8) -> [1_isize: bb4, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 ++ switchInt(move _8) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:28: 6:35 + } + +- bb4: { ++ bb3: { + StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16 + _11 = (((_4.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:15: 6:16 + StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25 + _12 = (((_4.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:24: 6:25 + StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34 + _13 = (((_4.2: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:33: 6:34 + _0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41 + StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41 + StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41 + StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:40: 6:41 +- goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6 ++ goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 8:6 + } + +- bb5: { ++ bb4: { + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:9:1: 9:2 + return; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:9:2: 9:2 ++ } ++ ++ bb5: { ++ StorageDead(_15); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 ++ switchInt(_10) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:6:19: 6:26 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch_3_element_tuple.rs b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.rs new file mode 100644 index 00000000000..1d6877d67df --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_3_element_tuple.rs @@ -0,0 +1,13 @@ +// compile-flags: -Z mir-opt-level=3 + +// EMIT_MIR early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff +fn opt1(x: Option<u32>, y: Option<u32>, z: Option<u32>) -> u32 { + match (x, y, z) { + (Some(a), Some(b), Some(c)) => 0, + _ => 1, + } +} + +fn main() { + opt1(None, Some(0), None); +} diff --git a/src/test/mir-opt/early_otherwise_branch_68867.rs b/src/test/mir-opt/early_otherwise_branch_68867.rs new file mode 100644 index 00000000000..5922e73e5d2 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_68867.rs @@ -0,0 +1,33 @@ +// ignore-tidy-linelength +// compile-flags: -Z mir-opt-level=3 + +// example from #68867 +type CSSFloat = f32; + +pub enum ViewportPercentageLength { + Vw(CSSFloat), + Vh(CSSFloat), + Vmin(CSSFloat), + Vmax(CSSFloat), +} + +// EMIT_MIR early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff +// EMIT_MIR early_otherwise_branch_68867.try_sum EarlyOtherwiseBranch.before SimplifyBranches-after-copy-prop.after +#[no_mangle] +pub extern "C" fn try_sum( + x: &ViewportPercentageLength, + other: &ViewportPercentageLength, +) -> Result<ViewportPercentageLength, ()> { + use self::ViewportPercentageLength::*; + Ok(match (x, other) { + (&Vw(one), &Vw(other)) => Vw(one + other), + (&Vh(one), &Vh(other)) => Vh(one + other), + (&Vmin(one), &Vmin(other)) => Vmin(one + other), + (&Vmax(one), &Vmax(other)) => Vmax(one + other), + _ => return Err(()), + }) +} + +fn main() { + try_sum(&ViewportPercentageLength::Vw(1.0), &ViewportPercentageLength::Vw(2.0)); +} diff --git a/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.before-SimplifyBranches-after-copy-prop.after.diff b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.before-SimplifyBranches-after-copy-prop.after.diff new file mode 100644 index 00000000000..fbc46c9d196 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.before-SimplifyBranches-after-copy-prop.after.diff @@ -0,0 +1,310 @@ +- // MIR for `try_sum` before EarlyOtherwiseBranch ++ // MIR for `try_sum` after SimplifyBranches-after-copy-prop + + fn try_sum(_1: &ViewportPercentageLength, _2: &ViewportPercentageLength) -> std::result::Result<ViewportPercentageLength, ()> { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:18:5: 18:6 + debug other => _2; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:19:5: 19:10 + let mut _0: std::result::Result<ViewportPercentageLength, ()>; // return place in scope 0 at $DIR/early_otherwise_branch_68867.rs:20:6: 20:42 + let mut _3: ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + let mut _4: (&ViewportPercentageLength, &ViewportPercentageLength); // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 + let mut _5: &ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 + let mut _6: &ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + let mut _8: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 + let mut _9: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 + let mut _10: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 + let mut _11: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 + let _12: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 + let _13: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + let mut _14: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 + let mut _15: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 + let mut _16: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 + let _17: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 + let _18: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + let mut _19: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 + let mut _20: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 + let mut _21: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 + let _22: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 + let _23: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + let mut _24: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 + let mut _25: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 + let mut _26: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 + let _27: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 + let _28: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + let mut _29: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 + let mut _30: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 + let mut _31: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 + let mut _32: !; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 + let mut _33: (); // in scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 ++ let mut _34: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 ++ let mut _35: bool; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + scope 1 { +- debug one => _12; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 +- debug other => _13; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 ++ debug one => _15; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 ++ debug other => _16; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + } + scope 2 { +- debug one => _17; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 +- debug other => _18; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 ++ debug one => _20; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 ++ debug other => _21; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + } + scope 3 { +- debug one => _22; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 +- debug other => _23; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 ++ debug one => _25; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 ++ debug other => _26; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + } + scope 4 { +- debug one => _27; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 +- debug other => _28; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 ++ debug one => _30; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 ++ debug other => _31; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + } + + bb0: { +- StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 +- StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 +- StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 +- _5 = _1; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 +- StorageLive(_6); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 +- _6 = _2; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 +- (_4.0: &ViewportPercentageLength) = move _5; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 +- (_4.1: &ViewportPercentageLength) = move _6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 +- StorageDead(_6); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 +- StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 ++ (_4.0: &ViewportPercentageLength) = _1; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 ++ (_4.1: &ViewportPercentageLength) = move _2; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 + _11 = discriminant((*(_4.0: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 +- switchInt(move _11) -> [0_isize: bb1, 1_isize: bb3, 2_isize: bb4, 3_isize: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageLive(_34); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ _34 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageLive(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ _35 = Ne(_34, _11); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageDead(_34); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ switchInt(move _35) -> [false: bb8, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 + } + + bb1: { +- _7 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 +- switchInt(move _7) -> [0_isize: bb6, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 +- } +- +- bb2: { ++ StorageDead(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 + StorageLive(_33); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 + ((_0 as Err).0: ()) = const (); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:21: 27:28 + discriminant(_0) = 1; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:21: 27:28 + StorageDead(_33); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:27: 27:28 +- StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 +- StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 +- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 ++ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 + } + ++ bb2: { ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 ++ _15 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 ++ _16 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 ++ ((((_0 as Ok).0: ViewportPercentageLength) as Vw).0: f32) = Add(move _15, move _16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 ++ discriminant(((_0 as Ok).0: ViewportPercentageLength)) = 0; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 ++ nop; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ } ++ + bb3: { +- _8 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 +- switchInt(move _8) -> [1_isize: bb7, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 ++ _20 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 ++ _21 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 ++ ((((_0 as Ok).0: ViewportPercentageLength) as Vh).0: f32) = Add(move _20, move _21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 ++ discriminant(((_0 as Ok).0: ViewportPercentageLength)) = 1; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 ++ nop; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + + bb4: { +- _9 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 +- switchInt(move _9) -> [2_isize: bb8, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 ++ _25 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 ++ _26 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 ++ ((((_0 as Ok).0: ViewportPercentageLength) as Vmin).0: f32) = Add(move _25, move _26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 ++ discriminant(((_0 as Ok).0: ViewportPercentageLength)) = 2; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 ++ nop; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + + bb5: { +- _10 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 +- switchInt(move _10) -> [3_isize: bb9, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 ++ _30 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 ++ _31 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 ++ ((((_0 as Ok).0: ViewportPercentageLength) as Vmax).0: f32) = Add(move _30, move _31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 ++ discriminant(((_0 as Ok).0: ViewportPercentageLength)) = 3; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 ++ nop; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + + bb6: { +- StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 +- _12 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 +- StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 +- _13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 +- StorageLive(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 +- StorageLive(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 +- _15 = _12; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 +- StorageLive(_16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 +- _16 = _13; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 +- _14 = Add(move _15, move _16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 +- StorageDead(_16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 +- StorageDead(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 +- ((_3 as Vw).0: f32) = move _14; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 +- discriminant(_3) = 0; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 +- StorageDead(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 +- StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 +- StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ return; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 + } + + bb7: { +- StorageLive(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 +- _17 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 +- StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 +- _18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 +- StorageLive(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 +- StorageLive(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 +- _20 = _17; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 +- StorageLive(_21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 +- _21 = _18; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 +- _19 = Add(move _20, move _21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 +- StorageDead(_21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 +- StorageDead(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 +- ((_3 as Vh).0: f32) = move _19; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 +- discriminant(_3) = 1; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 +- StorageDead(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 +- StorageDead(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 +- StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 ++ discriminant(_0) = 0; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 ++ nop; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 ++ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 + } + + bb8: { +- StorageLive(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 +- _22 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 +- StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 +- _23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 +- StorageLive(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 +- StorageLive(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 +- _25 = _22; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 +- StorageLive(_26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 +- _26 = _23; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 +- _24 = Add(move _25, move _26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 +- StorageDead(_26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 +- StorageDead(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 +- ((_3 as Vmin).0: f32) = move _24; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 +- discriminant(_3) = 2; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 +- StorageDead(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 +- StorageDead(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 +- StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 +- } +- +- bb9: { +- StorageLive(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 +- _27 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 +- StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 +- _28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 +- StorageLive(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 +- StorageLive(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 +- _30 = _27; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 +- StorageLive(_31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 +- _31 = _28; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 +- _29 = Add(move _30, move _31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 +- StorageDead(_31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 +- StorageDead(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 +- ((_3 as Vmax).0: f32) = move _29; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 +- discriminant(_3) = 3; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 +- StorageDead(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 +- StorageDead(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 +- StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 +- } +- +- bb10: { +- return; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 +- } +- +- bb11: { +- ((_0 as Ok).0: ViewportPercentageLength) = move _3; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 +- discriminant(_0) = 0; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 +- StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 +- StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 +- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 ++ StorageDead(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 ++ switchInt(_11) -> [0_isize: bb2, 1_isize: bb3, 2_isize: bb4, 3_isize: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..54e4b082626 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff @@ -0,0 +1,223 @@ +- // MIR for `try_sum` before EarlyOtherwiseBranch ++ // MIR for `try_sum` after EarlyOtherwiseBranch + + fn try_sum(_1: &ViewportPercentageLength, _2: &ViewportPercentageLength) -> std::result::Result<ViewportPercentageLength, ()> { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:18:5: 18:6 + debug other => _2; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:19:5: 19:10 + let mut _0: std::result::Result<ViewportPercentageLength, ()>; // return place in scope 0 at $DIR/early_otherwise_branch_68867.rs:20:6: 20:42 + let mut _3: ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + let mut _4: (&ViewportPercentageLength, &ViewportPercentageLength); // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 + let mut _5: &ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 + let mut _6: &ViewportPercentageLength; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + let mut _8: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 + let mut _9: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 + let mut _10: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 + let mut _11: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 + let _12: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 + let _13: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + let mut _14: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 + let mut _15: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 + let mut _16: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 + let _17: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 + let _18: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + let mut _19: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 + let mut _20: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 + let mut _21: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 + let _22: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 + let _23: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + let mut _24: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 + let mut _25: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 + let mut _26: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 + let _27: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 + let _28: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + let mut _29: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 + let mut _30: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 + let mut _31: f32; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 + let mut _32: !; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 + let mut _33: (); // in scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 ++ let mut _34: isize; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 ++ let mut _35: bool; // in scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + scope 1 { + debug one => _12; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 + debug other => _13; // in scope 1 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + } + scope 2 { + debug one => _17; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 + debug other => _18; // in scope 2 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + } + scope 3 { + debug one => _22; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 + debug other => _23; // in scope 3 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + } + scope 4 { + debug one => _27; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 + debug other => _28; // in scope 4 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + } + + bb0: { + StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 + _5 = _1; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:15: 22:16 + StorageLive(_6); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 + _6 = _2; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:18: 22:23 + (_4.0: &ViewportPercentageLength) = move _5; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 + (_4.1: &ViewportPercentageLength) = move _6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:14: 22:24 + StorageDead(_6); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:23: 22:24 + _11 = discriminant((*(_4.0: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 +- switchInt(move _11) -> [0_isize: bb1, 1_isize: bb3, 2_isize: bb4, 3_isize: bb5, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageLive(_34); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ _34 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageLive(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ _35 = Ne(_34, _11); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ StorageDead(_34); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 ++ switchInt(move _35) -> [false: bb8, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:11: 23:18 + } + + bb1: { +- _7 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 +- switchInt(move _7) -> [0_isize: bb6, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 +- } +- +- bb2: { ++ StorageDead(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 + StorageLive(_33); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:25: 27:27 + ((_0 as Err).0: ()) = const (); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:21: 27:28 + discriminant(_0) = 1; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:21: 27:28 + StorageDead(_33); // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:27: 27:28 + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 +- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 ++ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:27:14: 27:28 + } + +- bb3: { +- _8 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 +- switchInt(move _8) -> [1_isize: bb7, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:21: 24:30 +- } +- +- bb4: { +- _9 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 +- switchInt(move _9) -> [2_isize: bb8, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:23: 25:34 +- } +- +- bb5: { +- _10 = discriminant((*(_4.1: &ViewportPercentageLength))); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 +- switchInt(move _10) -> [3_isize: bb9, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:23: 26:34 +- } +- +- bb6: { ++ bb2: { + StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 + _12 = (((*(_4.0: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:14: 23:17 + StorageLive(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + _13 = (((*(_4.1: &ViewportPercentageLength)) as Vw).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:24: 23:29 + StorageLive(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 + StorageLive(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 + _15 = _12; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:41 + StorageLive(_16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 + _16 = _13; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:44: 23:49 + _14 = Add(move _15, move _16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:38: 23:49 + StorageDead(_16); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 + StorageDead(_15); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:48: 23:49 + ((_3 as Vw).0: f32) = move _14; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 + discriminant(_3) = 0; // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:35: 23:50 + StorageDead(_14); // scope 1 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 + StorageDead(_13); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 + StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:49: 23:50 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + +- bb7: { ++ bb3: { + StorageLive(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 + _17 = (((*(_4.0: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:14: 24:17 + StorageLive(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + _18 = (((*(_4.1: &ViewportPercentageLength)) as Vh).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:24: 24:29 + StorageLive(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 + StorageLive(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 + _20 = _17; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:41 + StorageLive(_21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 + _21 = _18; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:44: 24:49 + _19 = Add(move _20, move _21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:38: 24:49 + StorageDead(_21); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 + StorageDead(_20); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:48: 24:49 + ((_3 as Vh).0: f32) = move _19; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 + discriminant(_3) = 1; // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:35: 24:50 + StorageDead(_19); // scope 2 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 + StorageDead(_18); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 + StorageDead(_17); // scope 0 at $DIR/early_otherwise_branch_68867.rs:24:49: 24:50 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + +- bb8: { ++ bb4: { + StorageLive(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 + _22 = (((*(_4.0: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:16: 25:19 + StorageLive(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + _23 = (((*(_4.1: &ViewportPercentageLength)) as Vmin).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:28: 25:33 + StorageLive(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 + StorageLive(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 + _25 = _22; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:47 + StorageLive(_26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 + _26 = _23; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:50: 25:55 + _24 = Add(move _25, move _26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:44: 25:55 + StorageDead(_26); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 + StorageDead(_25); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:54: 25:55 + ((_3 as Vmin).0: f32) = move _24; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 + discriminant(_3) = 2; // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:39: 25:56 + StorageDead(_24); // scope 3 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 + StorageDead(_23); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 + StorageDead(_22); // scope 0 at $DIR/early_otherwise_branch_68867.rs:25:55: 25:56 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + +- bb9: { ++ bb5: { + StorageLive(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 + _27 = (((*(_4.0: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:16: 26:19 + StorageLive(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + _28 = (((*(_4.1: &ViewportPercentageLength)) as Vmax).0: f32); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:28: 26:33 + StorageLive(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 + StorageLive(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 + _30 = _27; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:47 + StorageLive(_31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 + _31 = _28; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:50: 26:55 + _29 = Add(move _30, move _31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:44: 26:55 + StorageDead(_31); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 + StorageDead(_30); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:54: 26:55 + ((_3 as Vmax).0: f32) = move _29; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 + discriminant(_3) = 3; // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:39: 26:56 + StorageDead(_29); // scope 4 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 + StorageDead(_28); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 + StorageDead(_27); // scope 0 at $DIR/early_otherwise_branch_68867.rs:26:55: 26:56 +- goto -> bb11; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 ++ goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:8: 28:6 + } + +- bb10: { ++ bb6: { + return; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 + } + +- bb11: { ++ bb7: { + ((_0 as Ok).0: ViewportPercentageLength) = move _3; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 + discriminant(_0) = 0; // scope 0 at $DIR/early_otherwise_branch_68867.rs:22:5: 28:7 + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_68867.rs:28:6: 28:7 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:1: 29:2 +- goto -> bb10; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 ++ goto -> bb6; // scope 0 at $DIR/early_otherwise_branch_68867.rs:29:2: 29:2 ++ } ++ ++ bb8: { ++ StorageDead(_35); // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 ++ switchInt(_11) -> [0_isize: bb2, 1_isize: bb3, 2_isize: bb4, 3_isize: bb5, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_68867.rs:23:21: 23:30 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..9a6094f12df --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff @@ -0,0 +1,90 @@ +- // MIR for `noopt1` before EarlyOtherwiseBranch ++ // MIR for `noopt1` after EarlyOtherwiseBranch + + fn noopt1(_1: Option<u32>, _2: Option<u32>) -> u32 { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:7:11: 7:12 + debug y => _2; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:7:27: 7:28 + let mut _0: u32; // return place in scope 0 at $DIR/early_otherwise_branch_noopt.rs:7:46: 7:49 + let mut _3: (std::option::Option<u32>, std::option::Option<u32>); // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17 + let mut _4: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:12: 8:13 + let mut _5: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:15: 8:16 + let mut _6: isize; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:16: 11:23 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:19: 9:26 + let mut _8: isize; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:10: 9:17 + let _9: u32; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16 + let _10: u32; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25 + let _11: u32; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16 + let _12: u32; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22 + scope 1 { + debug a => _9; // in scope 1 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16 + debug b => _10; // in scope 1 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25 + } + scope 2 { + debug a => _11; // in scope 2 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16 + } + scope 3 { + debug b => _12; // in scope 3 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22 + } + + bb0: { + StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17 + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:12: 8:13 + _4 = _1; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:12: 8:13 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:15: 8:16 + _5 = _2; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:15: 8:16 + (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17 + (_3.1: std::option::Option<u32>) = move _5; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:16: 8:17 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:16: 8:17 + _8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:10: 9:17 + switchInt(move _8) -> [0_isize: bb1, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:10: 9:17 + } + + bb1: { + _6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:16: 11:23 + switchInt(move _6) -> [0_isize: bb2, otherwise: bb6]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:16: 11:23 + } + + bb2: { + _0 = const 3_u32; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:12:25: 12:26 + goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 13:6 + } + + bb3: { + _7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:19: 9:26 + switchInt(move _7) -> [0_isize: bb5, otherwise: bb4]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:19: 9:26 + } + + bb4: { + StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16 + _9 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16 + StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25 + _10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25 + _0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32 + StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32 + StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32 + goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 13:6 + } + + bb5: { + StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16 + _11 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16 + _0 = const 1_u32; // scope 2 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29 + StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29 + goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 13:6 + } + + bb6: { + StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22 + _12 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22 + _0 = const 2_u32; // scope 3 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29 + StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29 + goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 13:6 + } + + bb7: { + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:14:1: 14:2 + return; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:14:2: 14:2 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch_noopt.noopt2.EarlyOtherwiseBranch.diff b/src/test/mir-opt/early_otherwise_branch_noopt.noopt2.EarlyOtherwiseBranch.diff new file mode 100644 index 00000000000..c3aecb45293 --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_noopt.noopt2.EarlyOtherwiseBranch.diff @@ -0,0 +1,60 @@ +- // MIR for `noopt2` before EarlyOtherwiseBranch ++ // MIR for `noopt2` after EarlyOtherwiseBranch + + fn noopt2(_1: Option<u32>, _2: Option<bool>) -> u32 { + debug x => _1; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:18:11: 18:12 + debug y => _2; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:18:27: 18:28 + let mut _0: u32; // return place in scope 0 at $DIR/early_otherwise_branch_noopt.rs:18:47: 18:50 + let mut _3: (std::option::Option<u32>, std::option::Option<bool>); // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:11: 19:17 + let mut _4: std::option::Option<u32>; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:12: 19:13 + let mut _5: std::option::Option<bool>; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:15: 19:16 + let mut _6: isize; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:19: 20:26 + let mut _7: isize; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:10: 20:17 + let _8: u32; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16 + let _9: bool; // in scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25 + scope 1 { + debug a => _8; // in scope 1 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16 + debug b => _9; // in scope 1 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25 + } + + bb0: { + StorageLive(_3); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:11: 19:17 + StorageLive(_4); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:12: 19:13 + _4 = _1; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:12: 19:13 + StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:15: 19:16 + _5 = _2; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:15: 19:16 + (_3.0: std::option::Option<u32>) = move _4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:11: 19:17 + (_3.1: std::option::Option<bool>) = move _5; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:11: 19:17 + StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:16: 19:17 + StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:16: 19:17 + _7 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:10: 20:17 + switchInt(move _7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:10: 20:17 + } + + bb1: { + _0 = const 1_u32; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:21:14: 21:15 + goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:5: 22:6 + } + + bb2: { + _6 = discriminant((_3.1: std::option::Option<bool>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:19: 20:26 + switchInt(move _6) -> [1_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:19: 20:26 + } + + bb3: { + StorageLive(_8); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16 + _8 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:15: 20:16 + StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25 + _9 = (((_3.1: std::option::Option<bool>) as Some).0: bool); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:24: 20:25 + _0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32 + StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32 + StorageDead(_8); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:20:31: 20:32 + goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:19:5: 22:6 + } + + bb4: { + StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:23:1: 23:2 + return; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:23:2: 23:2 + } + } + diff --git a/src/test/mir-opt/early_otherwise_branch_noopt.rs b/src/test/mir-opt/early_otherwise_branch_noopt.rs new file mode 100644 index 00000000000..bd15f520dfc --- /dev/null +++ b/src/test/mir-opt/early_otherwise_branch_noopt.rs @@ -0,0 +1,28 @@ +// compile-flags: -Z mir-opt-level=3 + +// must not optimize as it does not follow the pattern of +// left and right hand side being the same variant + +// EMIT_MIR early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff +fn noopt1(x: Option<u32>, y: Option<u32>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + (Some(a), None) => 1, + (None, Some(b)) => 2, + (None, None) => 3, + } +} + +// must not optimize as the types being matched on are not identical +// EMIT_MIR early_otherwise_branch_noopt.noopt2.EarlyOtherwiseBranch.diff +fn noopt2(x: Option<u32>, y: Option<bool>) -> u32 { + match (x, y) { + (Some(a), Some(b)) => 0, + _ => 1, + } +} + +fn main() { + noopt1(None, Some(0)); + noopt2(None, Some(true)); +} |