search for: packed_gather_param

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Avoiding during my pass the optimization (copy propagation) of my LLVM IR code (at generation)
2016 Dec 30
3
Avoiding during my pass the optimization (copy propagation) of my LLVM IR code (at generation)
Hello. I'm writing an LLVM pass that is working on LLVM IR. To my surprise the following LLVM pass code generates optimized code - it does copy propagation on it. Value *vecShuffleOnePtr = Builder.CreateGEP(ptr_B, vecShuffleOne, "VectorGep"); ... packed_gather_params.push_back(vecShuffleOnePtr); CallInst *callGather = Builder.CreateCall(func_llvm_masked_gather_v128i16, packed_gather_params); callGather->addAttribute(AttributeSet::FunctionIndex, Attribute::NoUnwind); DEBUG(dbgs() <<...
Avoiding during my pass the optimization (copy propagation) of my LLVM IR code (at generation)
2016 Dec 31
0
Avoiding during my pass the optimization (copy propagation) of my LLVM IR code (at generation)
...orking on LLVM IR. > To my surprise the following LLVM pass code generates optimized code - it does copy propagation on it. It does *constant* propagation to be exact. > Value *vecShuffleOnePtr = Builder.CreateGEP(ptr_B, vecShuffleOne, "VectorGep"); > ... > packed_gather_params.push_back(vecShuffleOnePtr); > CallInst *callGather = Builder.CreateCall(func_llvm_masked_gather_v128i16, > packed_gather_params); > callGather->addAttribute(AttributeSet::FunctionIndex, Attribute::NoUnwind); > > DEBU...