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flip the scev minus direction to simplify the code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186466 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2013-07-16 22:57:06 +00:00
parent 7c8a26030f
commit 71cc5e4ea2
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1004,7 +1004,7 @@ bool BoUpSLP::isConsecutiveAccess(Value *A, Value *B) {
// Calculate the distance. // Calculate the distance.
const SCEV *PtrSCEVA = SE->getSCEV(PtrA); const SCEV *PtrSCEVA = SE->getSCEV(PtrA);
const SCEV *PtrSCEVB = SE->getSCEV(PtrB); const SCEV *PtrSCEVB = SE->getSCEV(PtrB);
const SCEV *OffsetSCEV = SE->getMinusSCEV(PtrSCEVA, PtrSCEVB); const SCEV *OffsetSCEV = SE->getMinusSCEV(PtrSCEVB, PtrSCEVA);
const SCEVConstant *ConstOffSCEV = dyn_cast<SCEVConstant>(OffsetSCEV); const SCEVConstant *ConstOffSCEV = dyn_cast<SCEVConstant>(OffsetSCEV);
// Non constant distance. // Non constant distance.
@ -1013,10 +1013,10 @@ bool BoUpSLP::isConsecutiveAccess(Value *A, Value *B) {
int64_t Offset = ConstOffSCEV->getValue()->getSExtValue(); int64_t Offset = ConstOffSCEV->getValue()->getSExtValue();
Type *Ty = cast<PointerType>(PtrA->getType())->getElementType(); Type *Ty = cast<PointerType>(PtrA->getType())->getElementType();
// The Instructions are connsecutive if the size of the first load/store is // The Instructions are consecutive if the size of the first load/store is
// the same as the offset. // the same as the offset.
int64_t Sz = DL->getTypeStoreSize(Ty); int64_t Sz = DL->getTypeStoreSize(Ty);
return ((-Offset) == Sz); return (Offset == Sz);
} }
Value *BoUpSLP::getSinkBarrier(Instruction *Src, Instruction *Dst) { Value *BoUpSLP::getSinkBarrier(Instruction *Src, Instruction *Dst) {