1 //===-- InstructionSimplify.h - Fold instructions into simpler forms ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares routines for folding instructions into simpler forms that
11 // do not require creating new instructions. For example, this does constant
12 // folding, and can handle identities like (X&0)->0.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
17 #define LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
23 /// SimplifyCompare - Given operands for a CmpInst, see if we can
24 /// fold the result. If not, this returns null.
25 Value *SimplifyCompare(unsigned Predicate, Value *LHS, Value *RHS,
26 const TargetData *TD = 0);
29 /// SimplifyBinOp - Given operands for a BinaryOperator, see if we can
30 /// fold the result. If not, this returns null.
31 Value *SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS,
32 const TargetData *TD = 0);
34 } // end namespace llvm