//===----------------------------------------------------------------------===//
#include "SparcInternals.h"
-#include "llvm/Target/Sparc.h"
-#include "llvm/CodeGen/InstrScheduling.h"
+#include "llvm/Target/TargetMachineImpls.h"
+#include "llvm/Function.h"
+#include "llvm/PassManager.h"
+#include "llvm/Transforms/Scalar.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/PreSelection.h"
+#include "llvm/CodeGen/StackSlots.h"
+#include "llvm/CodeGen/PeepholeOpts.h"
#include "llvm/CodeGen/InstrSelection.h"
-#include "llvm/CodeGen/MachineCodeForInstruction.h"
-#include "llvm/CodeGen/MachineCodeForMethod.h"
+#include "llvm/CodeGen/InstrScheduling.h"
#include "llvm/CodeGen/RegisterAllocation.h"
+#include "llvm/CodeGen/MachineCodeForInstruction.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 <iostream>
+#include "Support/CommandLine.h"
using std::cerr;
// Build the MachineInstruction Description Array...
#define I(ENUM, OPCODESTRING, NUMOPERANDS, RESULTPOS, MAXIMM, IMMSE, \
NUMDELAYSLOTS, LATENCY, SCHEDCLASS, INSTFLAGS) \
{ OPCODESTRING, NUMOPERANDS, RESULTPOS, MAXIMM, IMMSE, \
- NUMDELAYSLOTS, LATENCY, SCHEDCLASS, INSTFLAGS },
+ NUMDELAYSLOTS, LATENCY, SCHEDCLASS, INSTFLAGS, 0 },
#include "SparcInstr.def"
};
+//---------------------------------------------------------------------------
+// Command line options to control choice of code generation passes.
+//---------------------------------------------------------------------------
+
+static cl::opt<bool> DisablePreSelect("nopreselect",
+ cl::desc("Disable preselection pass"));
+
+static cl::opt<bool> DisableSched("nosched",
+ cl::desc("Disable local scheduling pass"));
+
+static cl::opt<bool> DisablePeephole("nopeephole",
+ cl::desc("Disable peephole optimization pass"));
+
//----------------------------------------------------------------------------
// allocateSparcTargetMachine - Allocate and return a subclass of TargetMachine
// that implements the Sparc backend. (the llvm/CodeGen/Sparc.h interface)
//---------------------------------------------------------------------------
int
-UltraSparcFrameInfo::getFirstAutomaticVarOffset(MachineCodeForMethod& ,
+UltraSparcFrameInfo::getFirstAutomaticVarOffset(MachineFunction& ,
bool& pos) const
{
pos = false; // static stack area grows downwards
}
int
-UltraSparcFrameInfo::getRegSpillAreaOffset(MachineCodeForMethod& mcInfo,
+UltraSparcFrameInfo::getRegSpillAreaOffset(MachineFunction& mcInfo,
bool& pos) const
{
mcInfo.freezeAutomaticVarsArea(); // ensure no more auto vars are added
}
int
-UltraSparcFrameInfo::getTmpAreaOffset(MachineCodeForMethod& mcInfo,
+UltraSparcFrameInfo::getTmpAreaOffset(MachineFunction& mcInfo,
bool& pos) const
{
mcInfo.freezeAutomaticVarsArea(); // ensure no more auto vars are added
}
int
-UltraSparcFrameInfo::getDynamicAreaOffset(MachineCodeForMethod& mcInfo,
+UltraSparcFrameInfo::getDynamicAreaOffset(MachineFunction& mcInfo,
bool& pos) const
{
// Dynamic stack area grows downwards starting at top of opt-args area.
// 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;
}
-
//---------------------------------------------------------------------------
// class UltraSparcMachine
//
//---------------------------------------------------------------------------
UltraSparc::UltraSparc()
- : TargetMachine("UltraSparc-Native"),
- instrInfo(*this),
+ : TargetMachine("UltraSparc-Native", 4),
schedInfo(*this),
regInfo(*this),
frameInfo(*this),
- cacheInfo(*this)
-{
- optSizeForSubWordData = 4;
- minMemOpWordSize = 8;
- maxAtomicMemOpWordSize = 8;
+ cacheInfo(*this),
+ optInfo(*this) {
}
-
-//===---------------------------------------------------------------------===//
-// 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));
+bool UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
+{
+ // Construct and initialize the MachineFunction object for this fn.
+ 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 (!DisablePreSelect)
+ {
+ PM.add(createPreSelectionPass(*this));
+ /* PM.add(createReassociatePass()); */
+ PM.add(createLICMPass());
+ PM.add(createGCSEPass());
+ }
PM.add(createInstructionSelectionPass(*this));
- PM.add(createInstructionSchedulingWithSSAPass(*this));
+ if (!DisableSched)
+ 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(getPrologEpilogInsertionPass());
+
+ if (!DisablePeephole)
+ PM.add(createPeepholeOptsPass(*this));
PM.add(MappingInfoForFunction(Out));
// 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
-
+ PM.add(getFunctionAsmPrinterPass(Out));
+ PM.add(createMachineCodeDestructionPass()); // Free stuff no longer needed
+
// Emit Module level assembly after all of the functions have been processed.
- PM.add(getModuleAsmPrinterPass(PM, Out));
+ PM.add(getModuleAsmPrinterPass(Out));
- // Emit bytecode to the sparc assembly file into its special section next
+ // Emit bytecode to the assembly file into its special section next
PM.add(getEmitBytecodeToAsmPass(Out));
PM.add(getFunctionInfo(Out));
+ return false;
}
-
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