diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/IndVarSimplify.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index 7001d330fce0..ceb03eb17f6d 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -138,8 +138,6 @@ AllowIVWidening("indvars-widen-indvars", cl::Hidden, cl::init(true), namespace { -struct RewritePhi; - class IndVarSimplify { LoopInfo *LI; ScalarEvolution *SE; @@ -982,6 +980,7 @@ static Value *genLoopLimit(PHINode *IndVar, BasicBlock *ExitingBB, assert(isLoopCounter(IndVar, L, SE)); const SCEVAddRecExpr *AR = cast<SCEVAddRecExpr>(SE->getSCEV(IndVar)); const SCEV *IVInit = AR->getStart(); + assert(AR->getStepRecurrence(*SE)->isOne() && "only handles unit stride"); // IVInit may be a pointer while ExitCount is an integer when FindLoopCounter // finds a valid pointer IV. Sign extend ExitCount in order to materialize a @@ -1004,13 +1003,6 @@ static Value *genLoopLimit(PHINode *IndVar, BasicBlock *ExitingBB, assert(SE->isLoopInvariant(IVOffset, L) && "Computed iteration count is not loop invariant!"); - // We could handle pointer IVs other than i8*, but we need to compensate for - // gep index scaling. - assert(SE->getSizeOfExpr(IntegerType::getInt64Ty(IndVar->getContext()), - cast<PointerType>(IndVar->getType()) - ->getElementType())->isOne() && - "unit stride pointer IV must be i8*"); - const SCEV *IVLimit = SE->getAddExpr(IVInit, IVOffset); BranchInst *BI = cast<BranchInst>(ExitingBB->getTerminator()); return Rewriter.expandCodeFor(IVLimit, IndVar->getType(), BI); @@ -1026,7 +1018,6 @@ static Value *genLoopLimit(PHINode *IndVar, BasicBlock *ExitingBB, // IVInit integer and ExitCount pointer would only occur if a canonical IV // were generated on top of case #2, which is not expected. - assert(AR->getStepRecurrence(*SE)->isOne() && "only handles unit stride"); // For unit stride, IVCount = Start + ExitCount with 2's complement // overflow. |