diff options
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolution.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolution.cpp b/llvm/lib/Analysis/ScalarEvolution.cpp index aab95ae1f64..62244ccb3a0 100644 --- a/llvm/lib/Analysis/ScalarEvolution.cpp +++ b/llvm/lib/Analysis/ScalarEvolution.cpp @@ -2870,6 +2870,7 @@ const SCEV *ScalarEvolution::createNodeForGEP(GEPOperator *GEP) { // Add expression, because the Instruction may be guarded by control flow // and the no-overflow bits may not be valid for the expression in any // context. + bool isInBounds = GEP->isInBounds(); const Type *IntPtrTy = getEffectiveSCEVType(GEP->getType()); Value *Base = GEP->getOperand(0); @@ -2898,7 +2899,8 @@ const SCEV *ScalarEvolution::createNodeForGEP(GEPOperator *GEP) { IndexS = getTruncateOrSignExtend(IndexS, IntPtrTy); // Multiply the index by the element size to compute the element offset. - const SCEV *LocalOffset = getMulExpr(IndexS, ElementSize); + const SCEV *LocalOffset = getMulExpr(IndexS, ElementSize, /*NUW*/ false, + /*NSW*/ isInBounds); // Add the element offset to the running total offset. TotalOffset = getAddExpr(TotalOffset, LocalOffset); @@ -2909,7 +2911,8 @@ const SCEV *ScalarEvolution::createNodeForGEP(GEPOperator *GEP) { const SCEV *BaseS = getSCEV(Base); // Add the total offset from all the GEP indices to the base. - return getAddExpr(BaseS, TotalOffset); + return getAddExpr(BaseS, TotalOffset, /*NUW*/ false, + /*NSW*/ isInBounds); } /// GetMinTrailingZeros - Determine the minimum number of zero bits that S is |
