diff options
| -rw-r--r-- | include/llvm/CodeGen/InstrSelection.h | 5 | ||||
| -rw-r--r-- | include/llvm/CodeGen/InstrSelectionSupport.h | 38 |
2 files changed, 42 insertions, 1 deletions
diff --git a/include/llvm/CodeGen/InstrSelection.h b/include/llvm/CodeGen/InstrSelection.h index 632d37c85b..8010614d67 100644 --- a/include/llvm/CodeGen/InstrSelection.h +++ b/include/llvm/CodeGen/InstrSelection.h @@ -29,6 +29,8 @@ class TargetMachine; const unsigned MAX_INSTR_PER_VMINSTR = 8; +const Instruction::OtherOps TMP_INSTRUCTION_OPCODE = Instruction::UserOp1; + extern unsigned GetInstructionsByRule (InstructionNode* subtreeRoot, int ruleForNode, short* nts, @@ -74,7 +76,8 @@ public: TmpInstruction(OtherOps Opcode, Value *S1, Value* S2, const string &Name = "") : Instruction(S1->getType(), Opcode, Name) { - assert(Opcode == UserOp1 && "Tmp instruction opcode invalid!"); + assert(Opcode == TMP_INSTRUCTION_OPCODE && + "Tmp instruction opcode invalid!"); Operands.reserve(S2? 2 : 1); Operands.push_back(Use(S1, this)); if (S2) diff --git a/include/llvm/CodeGen/InstrSelectionSupport.h b/include/llvm/CodeGen/InstrSelectionSupport.h index 5253ef8cc4..7d11e206b5 100644 --- a/include/llvm/CodeGen/InstrSelectionSupport.h +++ b/include/llvm/CodeGen/InstrSelectionSupport.h @@ -28,6 +28,23 @@ class TargetMachine; //--------------------------------------------------------------------------- +// Function GetConstantValueAsSignedInt +// +// Convenience function to get the value of an integer constant, for an +// appropriate integer or non-integer type that can be held in an integer. +// The type of the argument must be the following: +// Signed or unsigned integer +// Boolean +// Pointer +// +// isValidConstant is set to true if a valid constant was found. +//--------------------------------------------------------------------------- + +int64_t GetConstantValueAsSignedInt (const Value *V, + bool &isValidConstant); + + +//--------------------------------------------------------------------------- // Function: FoldGetElemChain // // Purpose: @@ -97,6 +114,27 @@ MachineOperand::MachineOperandType unsigned int& getMachineRegNum, int64_t& getImmedValue); + +//--------------------------------------------------------------------------- +// Function: FixConstantOperandsForInstr +// +// Purpose: +// Special handling for constant operands of a machine instruction +// -- if the constant is 0, use the hardwired 0 register, if any; +// -- if the constant fits in the IMMEDIATE field, use that field; +// -- else create instructions to put the constant into a register, either +// directly or by loading explicitly from the constant pool. +// +// In the first 2 cases, the operand of `minstr' is modified in place. +// Returns a vector of machine instructions generated for operands that +// fall under case 3; these must be inserted before `minstr'. +//--------------------------------------------------------------------------- + +vector<MachineInstr*> FixConstantOperandsForInstr (Instruction* vmInstr, + MachineInstr* minstr, + TargetMachine& target); + + //**************************************************************************/ #endif |