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creategatherscatter
2016 Aug 21
2
LoopVectorize module - some possible enhancements
...llvm.org/docs/LangRef.html#llvm-masked-gather-intrinsics and scatter)?
I see you have defined some methods that should use them like:
- bool isLegalMaskedGather(Type *DataType);
- void InnerLoopVectorizer::vectorizeMemoryInstruction(Instruction *Instr) which
defines a bool CreateGatherScatter, etc
I gave to clang a simple vector add C program with step/stride 2 with flag "-avx2",
but the resulting vector code does NOT use gather nor scatter.
- did you try to consider pathological cases of loops such as:
for (int i = 0; i < N; i += 2) {
C[i/...