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c105645c16
can be invoked with only an opcode (i.e., without an instruction). Move all opCode->opCodeName translations there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2900 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
//===-- iOperators.cpp - Implement the Binary & Unary Operators --*- C++ -*--=//
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//
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// This file implements the nontrivial binary & unary operator instructions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/iOperators.h"
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#include "llvm/Type.h"
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#include <iostream>
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using std::cerr;
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//===----------------------------------------------------------------------===//
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// UnaryOperator Class
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//===----------------------------------------------------------------------===//
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UnaryOperator *UnaryOperator::create(UnaryOps Op, Value *Source) {
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switch (Op) {
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case Not: return new GenericUnaryInst(Op, Source);
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default:
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cerr << "Don't know how to Create UnaryOperator " << Op << "\n";
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return 0;
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}
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}
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//===----------------------------------------------------------------------===//
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// GenericUnaryOperator Class
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// BinaryOperator Class
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//===----------------------------------------------------------------------===//
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BinaryOperator *BinaryOperator::create(BinaryOps Op, Value *S1, Value *S2,
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const std::string &Name) {
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switch (Op) {
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// Binary comparison operators...
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case SetLT: case SetGT: case SetLE:
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case SetGE: case SetEQ: case SetNE:
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return new SetCondInst(Op, S1, S2, Name);
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default:
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return new GenericBinaryInst(Op, S1, S2, Name);
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}
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}
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// swapOperands - Exchange the two operands to this instruction. This
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// instruction is safe to use on any binary instruction and does not
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// modify the semantics of the instruction. If the instruction is
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// order dependant (SetLT f.e.) the opcode is changed.
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//
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bool BinaryOperator::swapOperands() {
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switch (getOpcode()) {
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// Instructions that don't need opcode modification
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case Add: case Mul:
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case And: case Xor:
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case Or:
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case SetEQ: case SetNE:
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break;
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// Instructions that need opcode modification
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case SetGT: iType = SetLT; break;
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case SetLT: iType = SetGT; break;
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case SetGE: iType = SetLE; break;
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case SetLE: iType = SetGE; break;
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// Error on the side of caution
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default:
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return true;
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}
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std::swap(Operands[0], Operands[1]);
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return false;
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}
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//===----------------------------------------------------------------------===//
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// GenericBinaryInst Class
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// SetCondInst Class
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//===----------------------------------------------------------------------===//
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SetCondInst::SetCondInst(BinaryOps opType, Value *S1, Value *S2,
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const std::string &Name)
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: BinaryOperator(opType, S1, S2, Name) {
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OpType = opType;
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setType(Type::BoolTy); // setcc instructions always return bool type.
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// Make sure it's a valid type...
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assert(getOpcodeName() != 0);
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}
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