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[X86] Don't call hasFnAttribute and getFnAttribute for 'prefer-vector-width' and 'min-legal-vector-width' in getSubtargetImpl 

We only need to call getFnAttribute and then check if the Attribute
is None or not.
This commit is contained in:
Craig Topper 2020-08-27 10:30:47 -07:00
parent e9d9a61208
commit ba852e1e19
1 changed files with 6 additions and 5 deletions
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11
llvm/lib/Target/X86/X86TargetMachine.cpp
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@ -254,8 +254,9 @@ X86TargetMachine::getSubtargetImpl(const Function &F) const {
// Extract prefer-vector-width attribute.
unsigned PreferVectorWidthOverride = 0;
if (F.hasFnAttribute("prefer-vector-width")) {
StringRef Val = F.getFnAttribute("prefer-vector-width").getValueAsString();
Attribute PreferVecWidthAttr = F.getFnAttribute("prefer-vector-width");
if (!PreferVecWidthAttr.hasAttribute(Attribute::None)) {
StringRef Val = PreferVecWidthAttr.getValueAsString();
unsigned Width;
if (!Val.getAsInteger(0, Width)) {
Key += "prefer-vector-width=";
@ -266,9 +267,9 @@ X86TargetMachine::getSubtargetImpl(const Function &F) const {
// Extract min-legal-vector-width attribute.
unsigned RequiredVectorWidth = UINT32_MAX;
if (F.hasFnAttribute("min-legal-vector-width")) {
StringRef Val =
F.getFnAttribute("min-legal-vector-width").getValueAsString();
Attribute MinLegalVecWidthAttr = F.getFnAttribute("min-legal-vector-width");
if (!MinLegalVecWidthAttr.hasAttribute(Attribute::None)) {
StringRef Val = MinLegalVecWidthAttr.getValueAsString();
unsigned Width;
if (!Val.getAsInteger(0, Width)) {
Key += "min-legal-vector-width=";