[llvm] r178132 - Hexagon: Disable optimizations at O0.
Jyotsna Verma
jverma at codeaurora.org
Wed Mar 27 04:14:24 PDT 2013
Author: jverma
Date: Wed Mar 27 06:14:24 2013
New Revision: 178132
URL: http://llvm.org/viewvc/llvm-project?rev=178132&view=rev
Log:
Hexagon: Disable optimizations at O0.
Modified:
llvm/trunk/lib/Target/Hexagon/HexagonTargetMachine.cpp
Modified: llvm/trunk/lib/Target/Hexagon/HexagonTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonTargetMachine.cpp?rev=178132&r1=178131&r2=178132&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonTargetMachine.cpp Wed Mar 27 06:14:24 2013
@@ -35,6 +35,10 @@ opt<bool> DisableHexagonMISched("disable
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::HexagonTargetMachi
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::
}
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;
}
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