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| author | Florian Hahn <flo@fhahn.com> | 2025-06-17 15:30:08 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-06-17 15:30:08 +0100 |
| commit | 8f797542258f6e682eb251d0851922a1ac08fb44 (patch) | |
| tree | c5caebbccfe077ccda9ec08d9a316d3ecb0b0930 /llvm/lib/Transforms/Utils/InlineFunction.cpp | |
| parent | 0a7b0c844c59189ad4f5072b73d7dfdfd78e76b7 (diff) | |
| download | llvm-8f797542258f6e682eb251d0851922a1ac08fb44.zip llvm-8f797542258f6e682eb251d0851922a1ac08fb44.tar.gz llvm-8f797542258f6e682eb251d0851922a1ac08fb44.tar.bz2 | |
[SCEV] Better preserve wrapping info in SimplifyICmpOperands for UGE. (#144404)
Update SimplifyICmpOperands to only try subtracting 1 from RHS first, if
RHS is an op we can fold the subtract directly into. Otherwise try
adding to LHS first, as we can preserve NUW flags.
This improves results in a few cases, including the modified test case
from berkeley-abc and new code to be added in
https://github.com/llvm/llvm-project/pull/128061.
Note that there are more cases where the results can be improved by
better ordering here which I'll try to investigate as follow-up.
PR: https://github.com/llvm/llvm-project/pull/144404
Diffstat (limited to 'llvm/lib/Transforms/Utils/InlineFunction.cpp')
0 files changed, 0 insertions, 0 deletions