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| author | David Majnemer <david.majnemer@gmail.com> | 2016-06-24 20:51:47 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-06-24 20:51:47 +0000 |
| commit | 5f1c01788ea6755edd190f6c140d82565904b9d1 (patch) | |
| tree | a212ca37edf8d85989d84521890152610e3fcc04 /llvm/lib/Support | |
| parent | e1e5ac3117515e0ea7234ecd3766facfde5e907f (diff) | |
| download | bcm5719-llvm-5f1c01788ea6755edd190f6c140d82565904b9d1.tar.gz bcm5719-llvm-5f1c01788ea6755edd190f6c140d82565904b9d1.zip | |
[APInt] Don't shift into the sign bit
This fixes PR28294.
llvm-svn: 273722
Diffstat (limited to 'llvm/lib/Support')
| -rw-r--r-- | llvm/lib/Support/APInt.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp index cd7b9a9980d..348f807c91a 100644 --- a/llvm/lib/Support/APInt.cpp +++ b/llvm/lib/Support/APInt.cpp @@ -555,8 +555,8 @@ bool APInt::ult(const APInt& RHS) const { bool APInt::slt(const APInt& RHS) const { assert(BitWidth == RHS.BitWidth && "Bit widths must be same for comparison"); if (isSingleWord()) { - int64_t lhsSext = (int64_t(VAL) << (64-BitWidth)) >> (64-BitWidth); - int64_t rhsSext = (int64_t(RHS.VAL) << (64-BitWidth)) >> (64-BitWidth); + int64_t lhsSext = SignExtend64(VAL, BitWidth); + int64_t rhsSext = SignExtend64(RHS.VAL, BitWidth); return lhsSext < rhsSext; } |
