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change some vectors to smallvectors. This speeds up instcombine on 447.dealII
by 5%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34332 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -7748,9 +7748,9 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
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// is a getelementptr instruction, combine the indices of the two
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// getelementptr instructions into a single instruction.
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//
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std::vector<Value*> SrcGEPOperands;
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SmallVector<Value*, 8> SrcGEPOperands;
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if (User *Src = dyn_castGetElementPtr(PtrOp))
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SrcGEPOperands.assign(Src->op_begin(), Src->op_end());
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SrcGEPOperands.append(Src->op_begin(), Src->op_end());
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if (!SrcGEPOperands.empty()) {
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// Note that if our source is a gep chain itself that we wait for that
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@ -7761,7 +7761,7 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) {
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cast<Instruction>(SrcGEPOperands[0])->getNumOperands() == 2)
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return 0; // Wait until our source is folded to completion.
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std::vector<Value *> Indices;
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SmallVector<Value*, 8> Indices;
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// Find out whether the last index in the source GEP is a sequential idx.
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bool EndsWithSequential = false;
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