forked from OSchip/llvm-project
ce8b3937dd
If we are able to compare with 0 instead of 1, we might be able to fold the setcc into a beqz/bnez. Often these setccs start life as an xor that gets converted to a setcc by DAG combiner's rebuildSetcc. I looked into a detecting (xor X, 1) and converting to (seteq X, 0) based on boolean contents being 0/1 in rebuildSetcc instead of using computeKnownBits. It was very perturbing to AMDGPU tests which I didn't look closely at. It had a few changes on a couple other targets, but didn't seem to be much if any improvement. Reviewed By: lenary Differential Revision: https://reviews.llvm.org/D94730 |
||
|---|---|---|
| .. | ||
| AArch64 | ||
| AMDGPU | ||
| ARC | ||
| ARM | ||
| AVR | ||
| BPF | ||
| Generic | ||
| Hexagon | ||
| Inputs | ||
| Lanai | ||
| MIR | ||
| MSP430 | ||
| Mips | ||
| NVPTX | ||
| PowerPC | ||
| RISCV | ||
| SPARC | ||
| SystemZ | ||
| Thumb | ||
| Thumb2 | ||
| VE | ||
| WebAssembly | ||
| WinCFGuard | ||
| WinEH | ||
| X86 | ||
| XCore | ||
| lit.local.cfg | ||