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changes in function LLVMFlattenInsertChain

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This commit is contained in:
Ilia Filippov
2013-06-14 15:21:45 +04:00
parent 560acd5017
commit d92f9df17c
3 changed files with 95 additions and 78 deletions
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23
opt.cpp
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@@ -1060,23 +1060,18 @@ static llvm::Value *
lGetBasePointer(llvm::Value *v) {
if (llvm::isa<llvm::InsertElementInst>(v) ||
llvm::isa<llvm::ShuffleVectorInst>(v)) {
llvm::Value *elements[ISPC_MAX_NVEC];
LLVMFlattenInsertChain(v, g->target->getVectorWidth(), elements);
// Make sure none of the elements is undefined.
llvm::Value *element = LLVMFlattenInsertChain
(v, g->target->getVectorWidth(), true, false);
// TODO: it's probably ok to allow undefined elements and return
// the base pointer if all of the other elements have the same
// value.
for (int i = 0; i < g->target->getVectorWidth(); ++i)
if (elements[i] == NULL)
return NULL;
// Do all of the elements have the same value?
for (int i = 0; i < g->target->getVectorWidth()-1; ++i)
if (elements[i] != elements[i+1])
return NULL;
return lCheckForActualPointer(elements[0]);
if (element != NULL) {
//all elements are the same and not NULLs
return lCheckForActualPointer(element);
}
else {
return NULL;
}
}
// This case comes up with global/static arrays