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| author | Dan Gohman <gohman@apple.com> | 2010-08-04 19:52:50 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-04 19:52:50 +0000 |
| commit | db764c6e3bf3d9f3be4e658e8218b45bc774ab95 (patch) | |
| tree | a353224f796f26986710dd502df27cfe376e6cd5 /llvm/lib/Analysis/ScalarEvolution.cpp | |
| parent | 23922873066c22cdf5c06b2ceb5cd2d75846ecb6 (diff) | |
| download | bcm5719-llvm-db764c6e3bf3d9f3be4e658e8218b45bc774ab95.tar.gz bcm5719-llvm-db764c6e3bf3d9f3be4e658e8218b45bc774ab95.zip | |
Fix a minor bug which resulted in intermediate calculations
using wider types than are necessary.
llvm-svn: 110241
Diffstat (limited to 'llvm/lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolution.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp index 1dc8e83b124..9aaafafe052 100644 --- a/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/llvm/lib/Analysis/ScalarEvolution.cpp @@ -1896,7 +1896,7 @@ const SCEV *ScalarEvolution::getUDivExpr(const SCEV *LHS, // TODO: Generalize this to non-constants by using known-bits information. const Type *Ty = LHS->getType(); unsigned LZ = RHSC->getValue()->getValue().countLeadingZeros(); - unsigned MaxShiftAmt = getTypeSizeInBits(Ty) - LZ; + unsigned MaxShiftAmt = getTypeSizeInBits(Ty) - LZ - 1; // For non-power-of-two values, effectively round the value up to the // nearest power of two. if (!RHSC->getValue()->getValue().isPowerOf2()) |
