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| author | Scott McMurray <scottmcm@users.noreply.github.com> | 2022-07-12 03:03:19 -0700 |
|---|---|---|
| committer | Scott McMurray <scottmcm@users.noreply.github.com> | 2022-07-13 17:07:41 -0700 |
| commit | a32305a80fd1409b054e97836321bd0621b142fd (patch) | |
| tree | 17c7411681304613c0dc6bb5c7c528de69555dd5 /compiler/rustc_codegen_llvm/src/allocator.rs | |
| parent | 87588a2afd9ca903366f0deaf84d805f34469384 (diff) | |
| download | rust-a32305a80fd1409b054e97836321bd0621b142fd.tar.gz rust-a32305a80fd1409b054e97836321bd0621b142fd.zip | |
Re-optimize `Layout::array`
This way it's one check instead of two, so hopefully it'll be better Nightly: ``` layout_array_i32: movq %rdi, %rax movl $4, %ecx mulq %rcx jo .LBB1_2 movabsq $9223372036854775805, %rcx cmpq %rcx, %rax jae .LBB1_2 movl $4, %edx retq .LBB1_2: … ``` This PR: ``` movq %rcx, %rax shrq $61, %rax jne .LBB2_1 shlq $2, %rcx movl $4, %edx movq %rcx, %rax retq .LBB2_1: … ```
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/allocator.rs')
0 files changed, 0 insertions, 0 deletions