diff options
author | Chris Lattner <sabre@nondot.org> | 2001-06-06 20:29:01 +0000 |
---|---|---|
committer | Chris Lattner <sabre@nondot.org> | 2001-06-06 20:29:01 +0000 |
commit | 009505452b713ed2e3a8e99c5545a6e721c65495 (patch) | |
tree | 136a71c5b87bdf534d1f20a67558b49226b5a4d6 /include/llvm/InstrTypes.h | |
parent | 8d0afd3d32d1d67f9aa5df250a1d6955aa8f1ac9 (diff) | |
download | external_llvm-009505452b713ed2e3a8e99c5545a6e721c65495.zip external_llvm-009505452b713ed2e3a8e99c5545a6e721c65495.tar.gz external_llvm-009505452b713ed2e3a8e99c5545a6e721c65495.tar.bz2 |
Initial revision
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/InstrTypes.h')
-rw-r--r-- | include/llvm/InstrTypes.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h new file mode 100644 index 0000000..be6ea26 --- /dev/null +++ b/include/llvm/InstrTypes.h @@ -0,0 +1,131 @@ +//===-- llvm/InstrTypes.h - Important Instruction subclasses -----*- C++ -*--=// +// +// This file defines various meta classes of instructions that exist in the VM +// representation. Specific concrete subclasses of these may be found in the +// i*.h files... +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_INSTRUCTION_TYPES_H +#define LLVM_INSTRUCTION_TYPES_H + +#include "llvm/Instruction.h" +#include <list> +#include <vector> + +class Method; +class SymTabValue; + +//===----------------------------------------------------------------------===// +// TerminatorInst Class +//===----------------------------------------------------------------------===// + +// TerminatorInst - Subclasses of this class are all able to terminate a basic +// block. Thus, these are all the flow control type of operations. +// +class TerminatorInst : public Instruction { +public: + TerminatorInst(unsigned iType); + inline ~TerminatorInst() {} + + // Terminators must implement the methods required by Instruction... + virtual Instruction *clone() const = 0; + virtual void dropAllReferences() = 0; + virtual string getOpcode() const = 0; + + virtual bool setOperand(unsigned i, Value *Val) = 0; + virtual const Value *getOperand(unsigned i) const = 0; + + // Additionally, they must provide a method to get at the successors of this + // terminator instruction. If 'idx' is out of range, a null pointer shall be + // returned. + // + virtual const BasicBlock *getSuccessor(unsigned idx) const = 0; + virtual unsigned getNumSuccessors() const = 0; + + inline BasicBlock *getSuccessor(unsigned idx) { + return (BasicBlock*)((const TerminatorInst *)this)->getSuccessor(idx); + } +}; + + +//===----------------------------------------------------------------------===// +// UnaryOperator Class +//===----------------------------------------------------------------------===// + +class UnaryOperator : public Instruction { + Use Source; +public: + UnaryOperator(Value *S, unsigned iType, const string &Name = "") + : Instruction(S->getType(), iType, Name), Source(S, this) { + } + inline ~UnaryOperator() { dropAllReferences(); } + + virtual Instruction *clone() const { + return Instruction::getUnaryOperator(getInstType(), Source); + } + + virtual void dropAllReferences() { + Source = 0; + } + + virtual string getOpcode() const = 0; + + virtual unsigned getNumOperands() const { return 1; } + virtual const Value *getOperand(unsigned i) const { + return (i == 0) ? Source : 0; + } + virtual bool setOperand(unsigned i, Value *Val) { + // assert(Val && "operand must not be null!"); + if (i) return false; + Source = Val; + return true; + } +}; + + + +//===----------------------------------------------------------------------===// +// BinaryOperator Class +//===----------------------------------------------------------------------===// + +class BinaryOperator : public Instruction { + Use Source1, Source2; +public: + BinaryOperator(unsigned iType, Value *S1, Value *S2, + const string &Name = "") + : Instruction(S1->getType(), iType, Name), Source1(S1, this), + Source2(S2, this){ + assert(S1 && S2 && S1->getType() == S2->getType()); + } + inline ~BinaryOperator() { dropAllReferences(); } + + virtual Instruction *clone() const { + return Instruction::getBinaryOperator(getInstType(), Source1, Source2); + } + + virtual void dropAllReferences() { + Source1 = Source2 = 0; + } + + virtual string getOpcode() const = 0; + + virtual unsigned getNumOperands() const { return 2; } + virtual const Value *getOperand(unsigned i) const { + return (i == 0) ? Source1 : ((i == 1) ? Source2 : 0); + } + + virtual bool setOperand(unsigned i, Value *Val) { + // assert(Val && "operand must not be null!"); + if (i == 0) { + Source1 = Val; //assert(Val->getType() == Source2->getType()); + } else if (i == 1) { + Source2 = Val; //assert(Val->getType() == Source1->getType()); + } else { + return false; + } + return true; + } +}; + +#endif |