diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index f5c9bb31e05..5152ec11e5b 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -715,6 +715,7 @@ bool LoopVectorizationLegality::canVectorizeBlock(BasicBlock &BB) { ValueVector Reads; ValueVector Writes; + SmallPtrSet<Value*, 16> AnalyzedPtrs; unsigned NumPhis = 0; for (BasicBlock::iterator it = BB.begin(), e = BB.end(); it != e; ++it) { Instruction *I = it; @@ -766,7 +767,10 @@ bool LoopVectorizationLegality::canVectorizeBlock(BasicBlock &BB) { DEBUG(dbgs() << "LV: Found a non-simple load.\n"); return false; } - GetUnderlyingObjects(Ld->getPointerOperand(), Reads, DL); + + Value* Ptr = Ld->getPointerOperand(); + if (AnalyzedPtrs.insert(Ptr)) + GetUnderlyingObjects(Ptr, Reads, DL); } // Record store pointers. Abort on all other instructions that write to @@ -778,7 +782,10 @@ bool LoopVectorizationLegality::canVectorizeBlock(BasicBlock &BB) { DEBUG(dbgs() << "LV: Found a non-simple store.\n"); return false; } - GetUnderlyingObjects(St->getPointerOperand(), Writes, DL); + + Value* Ptr = St->getPointerOperand(); + if (AnalyzedPtrs.insert(Ptr)) + GetUnderlyingObjects(St->getPointerOperand(), Writes, DL); } // We still don't handle functions. |
