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| author | Pietro Albini <pietro.albini@ferrous-systems.com> | 2021-10-27 15:45:31 +0200 |
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| committer | Pietro Albini <pietro.albini@ferrous-systems.com> | 2021-10-27 17:01:05 +0200 |
| commit | 68a4460b614bc925a12231d5bba04dd66cb78c6e (patch) | |
| tree | 4932dde79a35989123774b2a219eecdf45752e50 /compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs | |
| parent | 81130fe188ff37f2deacdf53d7afe823ceaba7ec (diff) | |
| download | rust-68a4460b614bc925a12231d5bba04dd66cb78c6e.tar.gz rust-68a4460b614bc925a12231d5bba04dd66cb78c6e.zip | |
replace `&` with `&&` in {integer}::checked_rem
Using short-circuit operators makes it easier to perform some kinds of source code analysis, like MC/DC code coverage (a requirement in safety-critical environments). The optimized x86 assembly is the same between the old and new versions: ``` xor eax, eax test esi, esi je .LBB0_1 cmp edi, -2147483648 jne .LBB0_4 cmp esi, -1 jne .LBB0_4 ret .LBB0_1: ret .LBB0_4: mov eax, edi cdq idiv esi mov eax, 1 ret ```
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs')
0 files changed, 0 insertions, 0 deletions
