forked from OSchip/llvm-project
4609f60ebc
It seems the earlier implementation does not follow the description in LoopRotationPass.h: It rotates loops even if they are already laid out correctly. The diff adjusts the behaviour. Given that the impact of LoopInversionPass is minor, this change won't yield significant perf differences. Tested on clang-10: there seems to be a 0.1%-0.3% cpu win and a small reduction of branch misses. **Before:** BOLT-INFO: 120 Functions were reordered by LoopInversionPass **After:** BOLT-INFO: 79 Functions were reordered by LoopInversionPass Reviewed By: yota9 Differential Revision: https://reviews.llvm.org/D121921 |
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| .. | ||
| AArch64 | ||
| Inputs | ||
| Unit | ||
| X86 | ||
| runtime | ||
| CMakeLists.txt | ||
| R_ABS.pic.lld.cpp | ||
| bad-exe.test | ||
| bolt-icf.test | ||
| bolt-info.test | ||
| heatmap.test | ||
| invalid-profile.test | ||
| keep-aranges.test | ||
| link_fdata.py | ||
| lit.cfg.py | ||
| lit.site.cfg.py.in | ||
| no-relocs.test | ||
| non-empty-debug-line.test | ||
| pie.test | ||
| re-optimize.test | ||
| shared-object.test | ||