[llvm] r179926 - Move PPC getSwappedPredicate for reuse
Hal Finkel
hfinkel at anl.gov
Fri Apr 19 22:16:26 PDT 2013
Author: hfinkel
Date: Sat Apr 20 00:16:26 2013
New Revision: 179926
URL: http://llvm.org/viewvc/llvm-project?rev=179926&view=rev
Log:
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.
Modified:
llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp
llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h
llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.cpp
Modified: llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp?rev=179926&r1=179925&r2=179926&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.cpp Sat Apr 20 00:16:26 2013
@@ -29,3 +29,18 @@ PPC::Predicate PPC::InvertPredicate(PPC:
}
llvm_unreachable("Unknown PPC branch opcode!");
}
+
+PPC::Predicate PPC::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!");
+}
+
Modified: llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h?rev=179926&r1=179925&r2=179926&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h (original)
+++ llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h Sat Apr 20 00:16:26 2013
@@ -37,6 +37,10 @@ namespace PPC {
/// Invert the specified predicate. != -> ==, < -> >=.
Predicate InvertPredicate(Predicate Opcode);
+
+ /// Assume the condition register is set by MI(a,b), return the predicate if
+ /// we modify the instructions such that condition register is set by MI(b,a).
+ Predicate getSwappedPredicate(Predicate Opcode);
}
}
Modified: llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.cpp?rev=179926&r1=179925&r2=179926&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.cpp Sat Apr 20 00:16:26 2013
@@ -1087,22 +1087,6 @@ bool PPCInstrInfo::analyzeCompare(const
}
}
-/// 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 @@ bool PPCInstrInfo::optimizeCompareInstr(
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();
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