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Hexagon: Disable optimizations at O0.

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llvm-svn: 178132
This commit is contained in:
Jyotsna Verma 2013-03-27 11:14:24 +00:00
parent dd6c2c55e0
commit d52d76ad2e
1 changed files with 31 additions and 18 deletions
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49
lib/Target/Hexagon/HexagonTargetMachine.cpp
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@ -35,6 +35,10 @@ opt<bool> DisableHexagonMISched("disable-hexagon-misched",
cl::Hidden, cl::ZeroOrMore, cl::init(false),
cl::desc("Disable Hexagon MI Scheduling"));
static cl::opt<bool> DisableHexagonCFGOpt("disable-hexagon-cfgopt",
cl::Hidden, cl::ZeroOrMore, cl::init(false),
cl::desc("Disable Hexagon CFG Optimization"));
/// HexagonTargetMachineModule - Note that this is used on hosts that
/// cannot link in a library unless there are references into the
/// library. In particular, it seems that it is not possible to get
@ -75,19 +79,20 @@ HexagonTargetMachine::HexagonTargetMachine(const Target &T, StringRef TT,
TSInfo(*this),
FrameLowering(Subtarget),
InstrItins(&Subtarget.getInstrItineraryData()) {
setMCUseCFI(false);
setMCUseCFI(false);
}
// addPassesForOptimizations - Allow the backend (target) to add Target
// Independent Optimization passes to the Pass Manager.
bool HexagonTargetMachine::addPassesForOptimizations(PassManagerBase &PM) {
PM.add(createConstantPropagationPass());
PM.add(createLoopSimplifyPass());
PM.add(createDeadCodeEliminationPass());
PM.add(createConstantPropagationPass());
PM.add(createLoopUnrollPass());
PM.add(createLoopStrengthReducePass());
if (getOptLevel() != CodeGenOpt::None) {
PM.add(createConstantPropagationPass());
PM.add(createLoopSimplifyPass());
PM.add(createDeadCodeEliminationPass());
PM.add(createConstantPropagationPass());
PM.add(createLoopUnrollPass());
PM.add(createLoopStrengthReducePass());
}
return true;
}
@ -121,38 +126,45 @@ TargetPassConfig *HexagonTargetMachine::createPassConfig(PassManagerBase &PM) {
}
bool HexagonPassConfig::addInstSelector() {
addPass(createHexagonRemoveExtendOps(getHexagonTargetMachine()));
if (getOptLevel() != CodeGenOpt::None)
addPass(createHexagonRemoveExtendOps(getHexagonTargetMachine()));
addPass(createHexagonISelDag(getHexagonTargetMachine(), getOptLevel()));
addPass(createHexagonPeephole());
if (getOptLevel() != CodeGenOpt::None)
addPass(createHexagonPeephole());
return false;
}
bool HexagonPassConfig::addPreRegAlloc() {
if (!DisableHardwareLoops) {
if (!DisableHardwareLoops && getOptLevel() != CodeGenOpt::None)
addPass(createHexagonHardwareLoops());
}
return false;
}
bool HexagonPassConfig::addPostRegAlloc() {
addPass(createHexagonCFGOptimizer(getHexagonTargetMachine()));
if (!DisableHexagonCFGOpt && getOptLevel() != CodeGenOpt::None)
addPass(createHexagonCFGOptimizer(getHexagonTargetMachine()));
return true;
}
bool HexagonPassConfig::addPreSched2() {
addPass(&IfConverterID);
if (getOptLevel() != CodeGenOpt::None)
addPass(&IfConverterID);
return true;
}
bool HexagonPassConfig::addPreEmitPass() {
if (!DisableHardwareLoops) {
if (!DisableHardwareLoops && getOptLevel() != CodeGenOpt::None)
addPass(createHexagonFixupHwLoops());
}
addPass(createHexagonNewValueJump());
if (getOptLevel() != CodeGenOpt::None)
addPass(createHexagonNewValueJump());
// Expand Spill code for predicate registers.
addPass(createHexagonExpandPredSpillCode(getHexagonTargetMachine()));
@ -161,7 +173,8 @@ bool HexagonPassConfig::addPreEmitPass() {
addPass(createHexagonSplitTFRCondSets(getHexagonTargetMachine()));
// Create Packets.
addPass(createHexagonPacketizer());
if (getOptLevel() != CodeGenOpt::None)
addPass(createHexagonPacketizer());
return false;
}