search for: dataty

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2013 Nov 15
4
[LLVMdev] Limit loop vectorizer to SSE
Something like: index 6db7f68..68564cb 100644 --- a/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -1208,6 +1208,8 @@ void InnerLoopVectorizer::vectorizeMemoryInstruction(Instr Type *DataTy = VectorType::get(ScalarDataTy, VF); Value *Ptr = LI ? LI->getPointerOperand() : SI->getPointerOperand(); unsigned Alignment = LI ? LI->getAlignment() : SI->getAlignment(); + if (Alignment == 0) + Alignment = 1; unsigned AddressSpace = Ptr->getType()->getPointerAddres...
2013 Nov 15
0
[LLVMdev] Limit loop vectorizer to SSE
...rizer to SSE > > > Something like: > > index 6db7f68..68564cb 100644 > --- a/lib/Transforms/Vectorize/LoopVectorize.cpp > +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp > @@ -1208,6 +1208,8 @@ void > InnerLoopVectorizer::vectorizeMemoryInstruction(Instr > Type *DataTy = VectorType::get(ScalarDataTy, VF); > Value *Ptr = LI ? LI->getPointerOperand() : > SI->getPointerOperand(); > unsigned Alignment = LI ? LI->getAlignment() : SI->getAlignment(); > + if (Alignment == 0) > + Alignment = 1; That may be conservatively correct,...
2013 Nov 15
2
[LLVMdev] Limit loop vectorizer to SSE
Yes, I was just about to send out: DL->getABITypeAlignment(ScalarDataTy); The question is: “… ABI alignment for the target …" is that getPrefTypeAlignment or getABITypeAlignment I would have thought the latter. On Nov 15, 2013, at 4:12 PM, Hal Finkel <hfinkel at anl.gov> wrote: > ----- Original Message ----- >> From: "Arnold Schwaigh...
2013 Nov 15
0
[LLVMdev] Limit loop vectorizer to SSE
Nadav, I believe aligned accesses to unaligned pointers is precisely the issue. Consider the function `add_u8S` before[1] and after[2] the loop vectorizer pass. There is no alignment assumption associated with %kernel_data prior to vectorization. I can't tell if it's the loop vectorizer or the codegen at fault, but the alignment assumption seems to sneak in somewhere. v/r, Josh [1]
2013 Nov 15
6
[LLVMdev] Limit loop vectorizer to SSE
On Nov 15, 2013, at 12:36 PM, Renato Golin <renato.golin at linaro.org> wrote: > On 15 November 2013 20:24, Joshua Klontz <josh.klontz at gmail.com> wrote: > Agreed, is there a pass that will insert a runtime alignment check? Also, what's the easiest way to get at TargetTransformInfo::getRegisterBitWidth() so I don't have to hard code 32? Thanks! > > I think