Move PPC getSwappedPredicate for reuse
The getSwappedPredicate function can be used in other places (such as in
improvements to the PPCCTRLoops pass). Instead of trapping it as a static
function in PPCInstrInfo, move it into PPCPredicates with other
predicate-related things.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179926 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp
index f38e42d..847bd22 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -1087,22 +1087,6 @@
}
}
-/// Assume the flags are set by MI(a,b), return the condition code if we modify
-/// the instructions such that flags are set by MI(b,a).
-PPC::Predicate static getSwappedPredicate(PPC::Predicate Opcode) {
- switch (Opcode) {
- case PPC::PRED_EQ: return PPC::PRED_EQ;
- case PPC::PRED_NE: return PPC::PRED_NE;
- case PPC::PRED_LT: return PPC::PRED_GT;
- case PPC::PRED_GE: return PPC::PRED_LE;
- case PPC::PRED_GT: return PPC::PRED_LT;
- case PPC::PRED_LE: return PPC::PRED_GE;
- case PPC::PRED_NU: return PPC::PRED_NU;
- case PPC::PRED_UN: return PPC::PRED_UN;
- }
- llvm_unreachable("Unknown PPC branch opcode!");
-}
-
bool PPCInstrInfo::optimizeCompareInstr(MachineInstr *CmpInstr,
unsigned SrcReg, unsigned SrcReg2,
int Mask, int Value,
@@ -1320,7 +1304,7 @@
Pred == PPC::PRED_EQ || Pred == PPC::PRED_NE) &&
"Invalid predicate for equality-only optimization");
PredsToUpdate.push_back(std::make_pair(&((*I).getOperand(0)),
- getSwappedPredicate(Pred)));
+ PPC::getSwappedPredicate(Pred)));
} else if (UseMI->getOpcode() == PPC::ISEL ||
UseMI->getOpcode() == PPC::ISEL8) {
unsigned NewSubReg = UseMI->getOperand(3).getSubReg();