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| author | Adam Nemet <anemet@apple.com> | 2018-02-12 22:42:13 +0000 |
|---|---|---|
| committer | Adam Nemet <anemet@apple.com> | 2018-02-12 22:42:13 +0000 |
| commit | 031a00c6607ef823942db1ed4269badd7c50f0ef (patch) | |
| tree | aef335e19d2c9dca2a14677f44f05e1d8cee5b63 /llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | |
| parent | 8defa9526885de99beb289bf4fe4f58afd2979a9 (diff) | |
| download | bcm5719-llvm-031a00c6607ef823942db1ed4269badd7c50f0ef.tar.gz bcm5719-llvm-031a00c6607ef823942db1ed4269badd7c50f0ef.zip | |
Revert "[LSR] Avoid UB overflow when examining reuse opportunities"
This reverts commit r324943.
Breaking bots, reverting for Gerolf.
llvm-svn: 324958
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index 8b6e5e34b40..b7d9a258913 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -3939,11 +3939,6 @@ void LSRInstance::GenerateCrossUseConstantOffsets() { if (Imms.size() == 1) continue; - // UB: Check for overflow - int64_t Res; - if (__builtin_saddll_overflow(Imms.begin()->first, std::prev(Imms.end())->first, &Res)) - continue; - DEBUG(dbgs() << "Generating cross-use offsets for " << *Reg << ':'; for (const auto &Entry : Imms) dbgs() << ' ' << Entry.first; |
