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[vectorizer] Simplify code to use existing helpers on the Function

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object and fewer pointless variables.

Also, add a clarifying comment and a FIXME because the code which
disables *all* vectorization if we can't use implicit floating point
instructions just makes no sense at all.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200214 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-01-27 11:27:37 +00:00
parent 424b2b0093
commit 91a3f1dc8e
1 changed files with 7 additions and 7 deletions
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14
lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -1055,14 +1055,14 @@ struct LoopVectorize : public FunctionPass {
// Check the function attributes to find out if this function should be
// optimized for size.
Function *F = L->getHeader()->getParent();
Attribute::AttrKind SzAttr = Attribute::OptimizeForSize;
Attribute::AttrKind FlAttr = Attribute::NoImplicitFloat;
unsigned FnIndex = AttributeSet::FunctionIndex;
bool OptForSize = Hints.Force != 1 &&
F->getAttributes().hasAttribute(FnIndex, SzAttr);
bool NoFloat = F->getAttributes().hasAttribute(FnIndex, FlAttr);
bool OptForSize =
Hints.Force != 1 && F->hasFnAttribute(Attribute::OptimizeForSize);
if (NoFloat) {
// Check the function attributes to see if implicit floats are allowed.a
// FIXME: This check doesn't seem possibly correct -- what if the loop is
// an integer loop and the vector instructions selected are purely integer
// vector instructions?
if (F->hasFnAttribute(Attribute::NoImplicitFloat)) {
DEBUG(dbgs() << "LV: Can't vectorize when the NoImplicitFloat"
"attribute is used.\n");
return false;