+++ /dev/null
-//===--- AMDILLiteralManager.cpp - AMDIL Literal Manager Pass --*- C++ -*--===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//==-----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "literal_manager"
-
-#include "AMDIL.h"
-
-#include "AMDILAlgorithms.tpp"
-#include "AMDILMachineFunctionInfo.h"
-#include "AMDILSubtarget.h"
-#include "AMDILTargetMachine.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Target/TargetMachine.h"
-
-using namespace llvm;
-
-
-// AMDIL Literal Manager traverses through all of the LOADCONST instructions and
-// converts them from an immediate value to the literal index. The literal index
-// is valid IL, but the immediate values are not. The Immediate values must be
-// aggregated and declared for clarity and to reduce the number of literals that
-// are used. It is also illegal to declare the same literal twice, so this keeps
-// that from occuring.
-
-namespace {
- class AMDILLiteralManager : public MachineFunctionPass {
- public:
- static char ID;
- AMDILLiteralManager(TargetMachine &tm AMDIL_OPT_LEVEL_DECL);
- virtual const char *getPassName() const;
-
- bool runOnMachineFunction(MachineFunction &MF);
- private:
- bool trackLiterals(MachineBasicBlock::iterator *bbb);
- TargetMachine &TM;
- const AMDILSubtarget *mSTM;
- AMDILMachineFunctionInfo *mMFI;
- int32_t mLitIdx;
- bool mChanged;
- };
- char AMDILLiteralManager::ID = 0;
-}
-
-namespace llvm {
- FunctionPass *
- createAMDILLiteralManager(TargetMachine &tm AMDIL_OPT_LEVEL_DECL) {
- return new AMDILLiteralManager(tm AMDIL_OPT_LEVEL_VAR);
- }
-
-}
-
-AMDILLiteralManager::AMDILLiteralManager(TargetMachine &tm
- AMDIL_OPT_LEVEL_DECL)
- : MachineFunctionPass(ID),
- TM(tm) {
-}
-
-bool AMDILLiteralManager::runOnMachineFunction(MachineFunction &MF) {
- mChanged = false;
- mMFI = MF.getInfo<AMDILMachineFunctionInfo>();
- const AMDILTargetMachine *amdtm =
- reinterpret_cast<const AMDILTargetMachine *>(&TM);
- mSTM = dynamic_cast<const AMDILSubtarget *>(amdtm->getSubtargetImpl());
- safeNestedForEach(MF.begin(), MF.end(), MF.begin()->begin(),
- std::bind1st(std::mem_fun(&AMDILLiteralManager::trackLiterals), this));
- return mChanged;
-}
-
-bool AMDILLiteralManager::trackLiterals(MachineBasicBlock::iterator *bbb) {
- MachineInstr *MI = *bbb;
- uint32_t Opcode = MI->getOpcode();
- switch(Opcode) {
- default:
- return false;
- case AMDIL::LOADCONST_i8:
- case AMDIL::LOADCONST_i16:
- case AMDIL::LOADCONST_i32:
- case AMDIL::LOADCONST_i64:
- case AMDIL::LOADCONST_f32:
- case AMDIL::LOADCONST_f64:
- break;
- };
- MachineOperand &dstOp = MI->getOperand(0);
- MachineOperand &litOp = MI->getOperand(1);
- if (!litOp.isImm() && !litOp.isFPImm()) {
- return false;
- }
- if (!dstOp.isReg()) {
- return false;
- }
- // Change the literal to the correct index for each literal that is found.
- if (litOp.isImm()) {
- int64_t immVal = litOp.getImm();
- uint32_t idx = MI->getOpcode() == AMDIL::LOADCONST_i64
- ? mMFI->addi64Literal(immVal)
- : mMFI->addi32Literal(static_cast<int>(immVal), Opcode);
- litOp.ChangeToImmediate(idx);
- return false;
- }
-
- if (litOp.isFPImm()) {
- const ConstantFP *fpVal = litOp.getFPImm();
- uint32_t idx = MI->getOpcode() == AMDIL::LOADCONST_f64
- ? mMFI->addf64Literal(fpVal)
- : mMFI->addf32Literal(fpVal);
- litOp.ChangeToImmediate(idx);
- return false;
- }
-
- return false;
-}
-
-const char* AMDILLiteralManager::getPassName() const {
- return "AMDIL Constant Propagation";
-}
-
-