rust - https://github.com/rust-lang/rust

Age	Commit message (Collapse)	Author	Lines
2021-05-17	rustc_codegen_ssa: only create backend `BasicBlock`s as-needed.	Eduard-Mihai Burtescu	-3/+3

2019-11-21	Introduce MIR optimizations for simplifying `x?` on `Result`s.	Mazdak Farrokhzad	-3/+5
	This optimization depends on inlining for the identity conversions introduced by the lowering of the `?`. To take advantage of `SimplifyArmIdentity`, `-Z mir-opt-level=2` is required because that triggers the inlining MIR optimization.
2019-06-13	Create fewer basic blocks in match MIR lowering	Matthew Jasper	-2/+2

2019-02-21	Fix codegen test	Matthew Jasper	-2/+2

2018-12-25	Remove licenses	Mark Rousskov	-10/+0

2018-02-20	rustc_mir: always run the deaggregator.	Eduard-Mihai Burtescu	-3/+3

2017-11-14	always add an unreachable branch on matches to give more info to llvm about ↵	Djzin	-3/+6
	which values are possible
2017-02-10	Rebase fixups	Simonas Kazlauskas	-1/+1

2017-02-10	Fix codegen test	Simonas Kazlauskas	-3/+7

2015-09-25	Tell LLVM when a match is exhaustive	Björn Steinbrink	-0/+30
	By putting an "unreachable" instruction into the default arm of a switch instruction we can let LLVM know that the match is exhaustive, allowing for better optimizations. For example, this match: ```rust pub enum Enum { One, Two, Three, } impl Enum { pub fn get_disc(self) -> u8 { match self { Enum::One => 0, Enum::Two => 1, Enum::Three => 2, } } } ``` Currently compiles to this on x86_64: ```asm .cfi_startproc movzbl %dil, %ecx cmpl $1, %ecx setne %al testb %cl, %cl je .LBB0_2 incb %al movb %al, %dil .LBB0_2: movb %dil, %al retq .Lfunc_end0: ``` But with this change we get: ```asm .cfi_startproc movb %dil, %al retq .Lfunc_end0: ```