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| author | Alexey Samsonov <vonosmas@gmail.com> | 2015-04-02 01:30:10 +0000 |
|---|---|---|
| committer | Alexey Samsonov <vonosmas@gmail.com> | 2015-04-02 01:30:10 +0000 |
| commit | f96cde9f687026321fddd790b10cdd1cd8891fe2 (patch) | |
| tree | 7f6bbd7d64460bcec35955582cccd372eacdb59b /llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp | |
| parent | a9b549f924e7f437cd7696530b96f6db5eacf37c (diff) | |
| download | bcm5719-llvm-f96cde9f687026321fddd790b10cdd1cd8891fe2.tar.gz bcm5719-llvm-f96cde9f687026321fddd790b10cdd1cd8891fe2.zip | |
Fix a bug indicated by -fsanitize=shift-exponent.
llvm-svn: 233881
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp index 381d8fc33ea..46570a11a4f 100644 --- a/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp +++ b/llvm/lib/Transforms/Utils/LoopUnrollRuntime.cpp @@ -320,7 +320,7 @@ bool llvm::UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI, // This constraint lets us deal with an overflowing trip count easily; see the // comment on ModVal below. This check is equivalent to `Log2(Count) < // BEWidth`. - if (static_cast<uint64_t>(Count) > (1ULL << BEWidth)) + if (BEWidth < 64 && static_cast<uint64_t>(Count) > (1ULL << BEWidth)) return false; // If this loop is nested, then the loop unroller changes the code in |
