diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 00623b1cbf6..2918f031b3f 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -1107,7 +1107,8 @@ Instruction *InstCombiner::FoldICmpCstShrCst(ICmpInst &I, Value *Op, Value *A, // Get the distance between the highest bit that's set. int Shift; if (IsNegative) - Shift = (-AP2).logBase2() - (-AP1).logBase2(); + // Get the ones' complement of AP2 and AP1 when computing the distance. + Shift = (~AP2).logBase2() - (~AP1).logBase2(); else Shift = AP2.logBase2() - AP1.logBase2(); |
