//===-- SparcV9TargetMachine.cpp - SparcV9 Target Machine Implementation --===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
-//
+//
// Primary interface to machine description for the UltraSPARC. Primarily just
// initializes machine-dependent parameters in class TargetMachine, and creates
// machine-dependent subclasses for classes such as TargetInstrInfo.
-//
+//
//===----------------------------------------------------------------------===//
#include "llvm/Function.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Transforms/Scalar.h"
-#include "MappingInfo.h"
+#include "MappingInfo.h"
#include "MachineFunctionInfo.h"
#include "MachineCodeForInstruction.h"
#include "SparcV9Internals.h"
// Command line options to control choice of code generation passes.
//---------------------------------------------------------------------------
+namespace llvm {
+ bool EmitMappingInfo = false;
+}
+
namespace {
cl::opt<bool> DisableSched("disable-sched",
- cl::desc("Disable local scheduling pass"));
+ cl::desc("Disable sparcv9 local scheduling pass"));
cl::opt<bool> DisablePeephole("disable-peephole",
- cl::desc("Disable peephole optimization pass"));
+ cl::desc("Disable sparcv9 peephole optimization pass"));
- cl::opt<bool> EmitMappingInfo("enable-maps",
+ cl::opt<bool, true> EmitMappingInfoOpt("enable-maps", cl::ReallyHidden,
+ cl::location(EmitMappingInfo),
+ cl::init(false),
cl::desc("Emit LLVM-to-MachineCode mapping info to assembly"));
- cl::opt<bool> DisableStrip("disable-strip",
- cl::desc("Do not strip the LLVM bytecode in executable"));
+ cl::opt<bool> EnableModSched("enable-modsched",
+ cl::desc("Enable sparcv9 modulo scheduling pass instead of local scheduling"), cl::Hidden);
// Register the target.
RegisterTarget<SparcV9TargetMachine> X("sparcv9", " SPARC V9");
}
unsigned SparcV9TargetMachine::getModuleMatchQuality(const Module &M) {
+ // We strongly match "sparcv9-*".
+ std::string TT = M.getTargetTriple();
+ if (TT.size() >= 8 && std::string(TT.begin(), TT.begin()+8) == "sparcv9-")
+ return 20;
+
if (M.getEndianness() == Module::BigEndian &&
M.getPointerSize() == Module::Pointer64)
- return 10; // Direct match
+ return 10; // Weak match
else if (M.getEndianness() != Module::AnyEndianness ||
M.getPointerSize() != Module::AnyPointerSize)
return 0; // Match for some other target
TargetMachine &Target;
public:
ConstructMachineFunction(TargetMachine &T) : Target(T) {}
-
+
const char *getPassName() const {
return "ConstructMachineFunction";
}
-
+
bool runOnFunction(Function &F) {
MachineFunction::construct(&F, Target).getInfo<SparcV9FunctionInfo>()->CalculateArgSize();
return false;
struct DestroyMachineFunction : public FunctionPass {
const char *getPassName() const { return "DestroyMachineFunction"; }
-
+
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);
-
+
MachineFunction::destruct(&F);
return false;
}
};
-
+
FunctionPass *createMachineCodeConstructionPass(TargetMachine &Target) {
return new ConstructMachineFunction(Target);
}
// Replace malloc and free instructions with library calls.
PM.add(createLowerAllocationsPass());
-
+
// FIXME: implement the switch instruction in the instruction selector.
PM.add(createLowerSwitchPass());
// FIXME: implement the invoke/unwind instructions!
PM.add(createLowerInvokePass());
-
+
// decompose multi-dimensional array references into single-dim refs
PM.add(createDecomposeMultiDimRefsPass());
PM.add(createPreSelectionPass(*this));
PM.add(createLowerSelectPass());
- // Run basic LLVM dataflow optimizations, to clean up after pre-selection.
- PM.add(createReassociatePass());
- PM.add(createLICMPass());
- PM.add(createGCSEPass());
-
// If the user's trying to read the generated code, they'll need to see the
// transformed input.
if (PrintMachineCode)
// 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));
-
+
PM.add(createSparcV9BurgInstSelector(*this));
if (!DisableSched)
PM.add(createInstructionSchedulingWithSSAPass(*this));
+ if(PrintMachineCode && EnableModSched)
+ PM.add(createMachineFunctionPrinterPass(&std::cerr, "Before modulo scheduling:\n"));
+
+ //Use ModuloScheduling if enabled, otherwise use local scheduling if not disabled.
+ if(EnableModSched)
+ PM.add(createModuloSchedulingPass(*this));
+
if (PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(&std::cerr, "Before reg alloc:\n"));
PM.add(createSparcV9MachineCodeDestructionPass());
// Emit bytecode to the assembly file into its special section next
- if (EmitMappingInfo) {
- // Strip all of the symbols from the bytecode so that it will be smaller...
- if (!DisableStrip)
- PM.add(createSymbolStrippingPass());
+ if (EmitMappingInfo)
PM.add(createBytecodeAsmPrinterPass(Out));
- }
-
+
return false;
}
// Replace malloc and free instructions with library calls.
PM.add(createLowerAllocationsPass());
-
+
// FIXME: implement the switch instruction in the instruction selector.
PM.add(createLowerSwitchPass());
// FIXME: implement the invoke/unwind instructions!
PM.add(createLowerInvokePass());
-
+
// decompose multi-dimensional array references into single-dim refs
PM.add(createDecomposeMultiDimRefsPass());
PM.add(createPreSelectionPass(TM));
PM.add(createLowerSelectPass());
- // Run basic LLVM dataflow optimizations, to clean up after pre-selection.
- PM.add(createReassociatePass());
- // FIXME: these passes crash the FunctionPassManager when being added...
- //PM.add(createLICMPass());
- //PM.add(createGCSEPass());
-
// If the user's trying to read the generated code, they'll need to see the
// transformed input.
if (PrintMachineCode)
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