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* Removed PreSelection pass because that is now done in the JIT

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* Removed instruction scheduling as it is too slow to run in a JIT environment
* Removed other passes because they aren't necessary and can slow JIT down


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6652 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2003-06-06 07:11:16 +00:00
parent 940b08dd1e
commit a51245036e
1 changed files with 10 additions and 22 deletions
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32
lib/Target/SparcV9/SparcV9TargetMachine.cpp
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@ -198,34 +198,24 @@ bool UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
// generation for the UltraSparc. // generation for the UltraSparc.
// //
bool UltraSparc::addPassesToJITCompile(PassManager &PM) { bool UltraSparc::addPassesToJITCompile(PassManager &PM) {
const TargetData &TD = getTargetData();
PM.add(new TargetData("lli", TD.isLittleEndian(), TD.getPointerSize(),
TD.getPointerAlignment(), TD.getDoubleAlignment()));
// Replace malloc and free instructions with library calls.
// Do this after tracing until lli implements these lib calls.
// For now, it will emulate malloc and free internally.
PM.add(createLowerAllocationsPass());
// FIXME: implement the switch instruction in the instruction selector. // FIXME: implement the switch instruction in the instruction selector.
PM.add(createLowerSwitchPass()); PM.add(createLowerSwitchPass());
// Construct and initialize the MachineFunction object for this fn. // Construct and initialize the MachineFunction object for this fn.
PM.add(createMachineCodeConstructionPass(*this)); PM.add(createMachineCodeConstructionPass(*this));
//Insert empty stackslots in the stack frame of each function
//so %fp+offset-8 and %fp+offset-16 are empty slots now!
PM.add(createStackSlotsPass(*this));
// Specialize LLVM code for this target machine and then
// run basic dataflow optimizations on LLVM code.
#if 0
if (!DisablePreSelect) {
PM.add(createPreSelectionPass(*this));
PM.add(createReassociatePass());
PM.add(createLICMPass());
PM.add(createGCSEPass());
}
#endif
PM.add(createInstructionSelectionPass(*this)); PM.add(createInstructionSelectionPass(*this));
#if 0
if (!DisableSched)
PM.add(createInstructionSchedulingWithSSAPass(*this));
#endif
// new pass: convert Value* in MachineOperand to an unsigned register // new pass: convert Value* in MachineOperand to an unsigned register
// this brings it in line with what the X86 JIT's RegisterAllocator expects // this brings it in line with what the X86 JIT's RegisterAllocator expects
//PM.add(createAddRegNumToValuesPass()); //PM.add(createAddRegNumToValuesPass());
@ -233,10 +223,8 @@ bool UltraSparc::addPassesToJITCompile(PassManager &PM) {
PM.add(getRegisterAllocator(*this)); PM.add(getRegisterAllocator(*this));
PM.add(getPrologEpilogInsertionPass()); PM.add(getPrologEpilogInsertionPass());
#if 0
if (!DisablePeephole) if (!DisablePeephole)
PM.add(createPeepholeOptsPass(*this)); PM.add(createPeepholeOptsPass(*this));
#endif
return false; // success! return false; // success!
} }