Revert "[InlineCost] Use TTI to check if GEP is free."
This reverts commit r292526. The test case has problem.
llvm-svn: 292529
diff --git a/llvm/lib/Analysis/InlineCost.cpp b/llvm/lib/Analysis/InlineCost.cpp
index b6c3997..4109049 100644
--- a/llvm/lib/Analysis/InlineCost.cpp
+++ b/llvm/lib/Analysis/InlineCost.cpp
@@ -134,7 +134,6 @@
void accumulateSROACost(DenseMap<Value *, int>::iterator CostIt,
int InstructionCost);
bool isGEPOffsetConstant(GetElementPtrInst &GEP);
- bool isGEPFree(GetElementPtrInst &GEP);
bool accumulateGEPOffset(GEPOperator &GEP, APInt &Offset);
bool simplifyCallSite(Function *F, CallSite CS);
ConstantInt *stripAndComputeInBoundsConstantOffsets(Value *&V);
@@ -332,21 +331,6 @@
return true;
}
-/// \brief Use TTI to check whether a GEP is free.
-///
-/// Respects any simplified values known during the analysis of this callsite.
-bool CallAnalyzer::isGEPFree(GetElementPtrInst &GEP) {
- SmallVector<Value *, 4> Indices;
- for (User::op_iterator I = GEP.idx_begin(), E = GEP.idx_end(); I != E; ++I)
- if (Constant *SimpleOp = SimplifiedValues.lookup(*I))
- Indices.push_back(SimpleOp);
- else
- Indices.push_back(*I);
- return TargetTransformInfo::TCC_Free ==
- TTI.getGEPCost(GEP.getSourceElementType(), GEP.getPointerOperand(),
- Indices);
-}
-
bool CallAnalyzer::visitAlloca(AllocaInst &I) {
// Check whether inlining will turn a dynamic alloca into a static
// alloca and handle that case.
@@ -412,7 +396,7 @@
// Non-constant GEPs aren't folded, and disable SROA.
if (SROACandidate)
disableSROA(CostIt);
- return isGEPFree(I);
+ return false;
}
// Add the result as a new mapping to Base + Offset.
@@ -438,7 +422,7 @@
// Variable GEPs will require math and will disable SROA.
if (SROACandidate)
disableSROA(CostIt);
- return isGEPFree(I);
+ return false;
}
bool CallAnalyzer::visitBitCast(BitCastInst &I) {