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| author | dim <dim@FreeBSD.org> | 2016-01-27 22:48:52 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2016-01-27 22:48:52 +0000 |
| commit | 2c8b37701007da0b1290d6550bc8cddadbb513fe (patch) | |
| tree | d30c8f2261d23e1c3239fea725fc8c13416d10ff /contrib/llvm/lib/Analysis/ScalarEvolution.cpp | |
| parent | e94fcba08326e935f67bf7cefa2cf2e3c4cb4be5 (diff) | |
| download | FreeBSD-src-2c8b37701007da0b1290d6550bc8cddadbb513fe.zip FreeBSD-src-2c8b37701007da0b1290d6550bc8cddadbb513fe.tar.gz | |
Update llvm, clang and lldb to release_38 branch r258968.
Diffstat (limited to 'contrib/llvm/lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | contrib/llvm/lib/Analysis/ScalarEvolution.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Analysis/ScalarEvolution.cpp b/contrib/llvm/lib/Analysis/ScalarEvolution.cpp index 34074ef..ef1bb3a 100644 --- a/contrib/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/contrib/llvm/lib/Analysis/ScalarEvolution.cpp @@ -5368,6 +5368,14 @@ ScalarEvolution::computeExitLimitFromCond(const Loop *L, BECount = EL0.Exact; } + // There are cases (e.g. PR26207) where computeExitLimitFromCond is able + // to be more aggressive when computing BECount than when computing + // MaxBECount. In these cases it is possible for EL0.Exact and EL1.Exact + // to match, but for EL0.Max and EL1.Max to not. + if (isa<SCEVCouldNotCompute>(MaxBECount) && + !isa<SCEVCouldNotCompute>(BECount)) + MaxBECount = BECount; + return ExitLimit(BECount, MaxBECount); } if (BO->getOpcode() == Instruction::Or) { |
