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authorbors <bors@rust-lang.org>2024-12-18 00:14:56 +0000
committerbors <bors@rust-lang.org>2024-12-18 00:14:56 +0000
commit52890e82153cd8716d97a96f47fb6ac99dec65be (patch)
tree5a23f57eb7b0a59a6647763b3f7ad847fe02ece9 /compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs
parent7e6bf003f396aeea510577b4e925d1d95c12ff53 (diff)
parent3b0df8c59f8811be5eb3b587c33ce75f0e788876 (diff)
downloadrust-52890e82153cd8716d97a96f47fb6ac99dec65be.tar.gz
rust-52890e82153cd8716d97a96f47fb6ac99dec65be.zip
Auto merge of #134439 - matthiaskrgr:rollup-grmmmx2, r=matthiaskrgr
Rollup of 7 pull requests

Successful merges:

 - #133265 (Add a range argument to vec.extract_if)
 - #133801 (Promote powerpc64le-unknown-linux-musl to tier 2 with host tools)
 - #134323 (coverage: Dismantle `map_data.rs` by moving its responsibilities elsewhere)
 - #134378 (An octuple of polonius fact generation cleanups)
 - #134408 (Regression test for RPIT inheriting lifetime from projection)
 - #134423 (bootstrap: use specific-purpose ui test path for `test_valid` self-test)
 - #134426 (Fix typo in uint_macros.rs)

Failed merges:

 - #133103 (Pass FnAbi to find_mir_or_eval_fn)

r? `@ghost`
`@rustbot` modify labels: rollup
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs')
-rw-r--r--compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs84
1 files changed, 0 insertions, 84 deletions
diff --git a/compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs b/compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs
deleted file mode 100644
index c5d1ebdfe7c..00000000000
--- a/compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs
+++ /dev/null
@@ -1,84 +0,0 @@
-use rustc_data_structures::captures::Captures;
-use rustc_middle::mir::coverage::{
-    CovTerm, CoverageIdsInfo, Expression, FunctionCoverageInfo, Mapping, MappingKind, Op,
-    SourceRegion,
-};
-
-use crate::coverageinfo::ffi::{Counter, CounterExpression, ExprKind};
-
-pub(crate) struct FunctionCoverage<'tcx> {
-    pub(crate) function_coverage_info: &'tcx FunctionCoverageInfo,
-    /// If `None`, the corresponding function is unused.
-    ids_info: Option<&'tcx CoverageIdsInfo>,
-}
-
-impl<'tcx> FunctionCoverage<'tcx> {
-    pub(crate) fn new_used(
-        function_coverage_info: &'tcx FunctionCoverageInfo,
-        ids_info: &'tcx CoverageIdsInfo,
-    ) -> Self {
-        Self { function_coverage_info, ids_info: Some(ids_info) }
-    }
-
-    pub(crate) fn new_unused(function_coverage_info: &'tcx FunctionCoverageInfo) -> Self {
-        Self { function_coverage_info, ids_info: None }
-    }
-
-    /// Returns true for a used (called) function, and false for an unused function.
-    pub(crate) fn is_used(&self) -> bool {
-        self.ids_info.is_some()
-    }
-
-    /// Return the source hash, generated from the HIR node structure, and used to indicate whether
-    /// or not the source code structure changed between different compilations.
-    pub(crate) fn source_hash(&self) -> u64 {
-        if self.is_used() { self.function_coverage_info.function_source_hash } else { 0 }
-    }
-
-    /// Convert this function's coverage expression data into a form that can be
-    /// passed through FFI to LLVM.
-    pub(crate) fn counter_expressions(
-        &self,
-    ) -> impl Iterator<Item = CounterExpression> + ExactSizeIterator + Captures<'_> {
-        // We know that LLVM will optimize out any unused expressions before
-        // producing the final coverage map, so there's no need to do the same
-        // thing on the Rust side unless we're confident we can do much better.
-        // (See `CounterExpressionsMinimizer` in `CoverageMappingWriter.cpp`.)
-
-        self.function_coverage_info.expressions.iter().map(move |&Expression { lhs, op, rhs }| {
-            CounterExpression {
-                lhs: self.counter_for_term(lhs),
-                kind: match op {
-                    Op::Add => ExprKind::Add,
-                    Op::Subtract => ExprKind::Subtract,
-                },
-                rhs: self.counter_for_term(rhs),
-            }
-        })
-    }
-
-    /// Converts this function's coverage mappings into an intermediate form
-    /// that will be used by `mapgen` when preparing for FFI.
-    pub(crate) fn counter_regions(
-        &self,
-    ) -> impl Iterator<Item = (MappingKind, &SourceRegion)> + ExactSizeIterator {
-        self.function_coverage_info.mappings.iter().map(move |mapping| {
-            let Mapping { kind, source_region } = mapping;
-            let kind =
-                kind.map_terms(|term| if self.is_zero_term(term) { CovTerm::Zero } else { term });
-            (kind, source_region)
-        })
-    }
-
-    fn counter_for_term(&self, term: CovTerm) -> Counter {
-        if self.is_zero_term(term) { Counter::ZERO } else { Counter::from_term(term) }
-    }
-
-    fn is_zero_term(&self, term: CovTerm) -> bool {
-        match self.ids_info {
-            Some(ids_info) => ids_info.is_zero_term(term),
-            // This function is unused, so all coverage counters/expressions are zero.
-            None => true,
-        }
-    }
-}