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[AArch64][GlobalISel] NFC: Use CmpInst::isUnsigned instead of static helper

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Reducing some code duplication.

We had a helper for checking if a predicate is unsigned. Remove that and use
the existing function in Instructions.cpp.

Differential Revision: https://reviews.llvm.org/D91288
This commit is contained in:
Jessica Paquette 2020-11-13 09:28:37 -08:00
parent fcaec2bb33
commit ea9106c312
1 changed files with 1 additions and 14 deletions
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15
lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
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@ -1089,19 +1089,6 @@ AArch64InstructionSelector::emitSelect(Register Dst, Register True,
return &*SelectInst;
}
/// Returns true if \p P is an unsigned integer comparison predicate.
static bool isUnsignedICMPPred(const CmpInst::Predicate P) {
switch (P) {
default:
return false;
case CmpInst::ICMP_UGT:
case CmpInst::ICMP_UGE:
case CmpInst::ICMP_ULT:
case CmpInst::ICMP_ULE:
return true;
}
}
static AArch64CC::CondCode changeICMPPredToAArch64CC(CmpInst::Predicate P) {
switch (P) {
default:
@ -4379,7 +4366,7 @@ MachineInstr *AArch64InstructionSelector::tryFoldIntegerCompare(
// Produce this if the compare is signed:
//
// tst x, y
if (!isUnsignedICMPPred(P) && LHSDef &&
if (!CmpInst::isUnsigned(P) && LHSDef &&
LHSDef->getOpcode() == TargetOpcode::G_AND) {
// Make sure that the RHS is 0.
auto ValAndVReg = getConstantVRegValWithLookThrough(RHS.getReg(), MRI);