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| author | Jessica Paquette <jpaquette@apple.com> | 2020-09-30 14:01:12 -0700 |
|---|---|---|
| committer | Jessica Paquette <jpaquette@apple.com> | 2020-10-01 15:34:16 -0700 |
| commit | 5402d11b1d8853ff10417b0f8d32edde3f4a51c0 (patch) | |
| tree | 6d229f40ee44d1ea9be04a7bfeff0469d7f04e83 /llvm/lib/CodeGen/MachineBasicBlock.cpp | |
| parent | 8e8664e55e8986e061283cb20c30f21fb2d2b641 (diff) | |
| download | llvm-5402d11b1d8853ff10417b0f8d32edde3f4a51c0.zip llvm-5402d11b1d8853ff10417b0f8d32edde3f4a51c0.tar.gz llvm-5402d11b1d8853ff10417b0f8d32edde3f4a51c0.tar.bz2 | |
[GlobalISel][AArch64] Don't emit cset for G_FCMPs feeding into G_BRCONDs
Similar to the FP case in `AArch64TargetLowering::LowerBR_CC`.
Instead of emitting the csets + a tbnz, just emit a compare + bcc
(or two bccs, depending on the condition code)
This improves cases like this: https://godbolt.org/z/v8hebx
This is a 0.1% geomean code size improvement for CTMark at -O3.
Differential Revision: https://reviews.llvm.org/D88624
Diffstat (limited to 'llvm/lib/CodeGen/MachineBasicBlock.cpp')
0 files changed, 0 insertions, 0 deletions