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Move all the code that creates code generation passes from Sparc.cpp to

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TargetMachine.cpp, since it is entirely machine-independent.
Also, add options to disable optional back-end passes (preselection and
instr. scheduling).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3740 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve
2002-09-16 15:39:26 +00:00
parent 00020d3d01
commit e1f7280bf8
4 changed files with 201 additions and 106 deletions
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92
lib/Target/SparcV9/SparcV9TargetMachine.cpp
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@@ -7,16 +7,9 @@
#include "SparcInternals.h"
#include "llvm/Target/Sparc.h"
#include "llvm/CodeGen/InstrScheduling.h"
#include "llvm/CodeGen/InstrSelection.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/CodeGen/MachineCodeForMethod.h"
#include "llvm/CodeGen/RegisterAllocation.h"
#include "llvm/Reoptimizer/Mapping/MappingInfo.h"
#include "llvm/Reoptimizer/Mapping/FInfo.h"
#include "llvm/Function.h"
#include "llvm/BasicBlock.h"
#include "llvm/PassManager.h"
#include "llvm/CodeGen/MachineCodeForMethod.h"
#include <iostream>
using std::cerr;
@@ -90,6 +83,8 @@ UltraSparcFrameInfo::getDynamicAreaOffset(MachineCodeForMethod& mcInfo,
// dynamic-size alloca.
pos = false;
unsigned int optArgsSize = mcInfo.getMaxOptionalArgsSize();
if (int extra = optArgsSize % getStackFrameSizeAlignment())
optArgsSize += (getStackFrameSizeAlignment() - extra);
int offset = optArgsSize + FirstOptionalOutgoingArgOffsetFromSP;
assert((offset - OFFSET) % getStackFrameSizeAlignment() == 0);
return offset;
@@ -120,84 +115,3 @@ UltraSparc::UltraSparc()
maxAtomicMemOpWordSize = 8;
}
//===---------------------------------------------------------------------===//
// GenerateCodeForTarget Pass
//
// Native code generation for a specified target.
//===---------------------------------------------------------------------===//
class ConstructMachineCodeForFunction : public FunctionPass {
TargetMachine &Target;
public:
inline ConstructMachineCodeForFunction(TargetMachine &T) : Target(T) {}
const char *getPassName() const {
return "Sparc ConstructMachineCodeForFunction";
}
bool runOnFunction(Function &F) {
MachineCodeForMethod::construct(&F, Target);
return false;
}
};
struct FreeMachineCodeForFunction : public FunctionPass {
const char *getPassName() const { return "Sparc FreeMachineCodeForFunction"; }
static void freeMachineCode(Instruction &I) {
MachineCodeForInstruction::destroy(&I);
}
bool runOnFunction(Function &F) {
for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
for (BasicBlock::iterator I = FI->begin(), E = FI->end(); I != E; ++I)
MachineCodeForInstruction::get(I).dropAllReferences();
for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
for_each(FI->begin(), FI->end(), freeMachineCode);
return false;
}
};
// addPassesToEmitAssembly - This method controls the entire code generation
// process for the ultra sparc.
//
void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out) {
// Construct and initialize the MachineCodeForMethod object for this fn.
PM.add(new ConstructMachineCodeForFunction(*this));
PM.add(createInstructionSelectionPass(*this));
PM.add(createInstructionSchedulingWithSSAPass(*this));
PM.add(getRegisterAllocator(*this));
//PM.add(new OptimizeLeafProcedures());
//PM.add(new DeleteFallThroughBranches());
//PM.add(new RemoveChainedBranches()); // should be folded with previous
//PM.add(new RemoveRedundantOps()); // operations with %g0, NOP, etc.
PM.add(createPrologEpilogCodeInserter(*this));
PM.add(MappingInfoForFunction(Out));
// Output assembly language to the .s file. Assembly emission is split into
// two parts: Function output and Global value output. This is because
// function output is pipelined with all of the rest of code generation stuff,
// allowing machine code representations for functions to be free'd after the
// function has been emitted.
//
PM.add(getFunctionAsmPrinterPass(PM, Out));
PM.add(new FreeMachineCodeForFunction()); // Free stuff no longer needed
// Emit Module level assembly after all of the functions have been processed.
PM.add(getModuleAsmPrinterPass(PM, Out));
// Emit bytecode to the sparc assembly file into its special section next
PM.add(getEmitBytecodeToAsmPass(Out));
PM.add(getFunctionInfo(Out));
}