mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-16 11:30:51 +00:00
9f3c25aeb3
takes decimated instructions and applies identities to them. This is pretty minimal at this point, but I plan to pull some instcombine logic out into these and similar routines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86613 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
//===-- InstructionSimplify.h - Fold instructions into simpler forms ------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares routines for folding instructions into simpler forms that
|
|
// do not require creating new instructions. For example, this does constant
|
|
// folding, and can handle identities like (X&0)->0.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
|
|
#define LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
|
|
|
|
namespace llvm {
|
|
class Value;
|
|
class TargetData;
|
|
|
|
/// SimplifyCompare - Given operands for a CmpInst, see if we can
|
|
/// fold the result. If not, this returns null.
|
|
Value *SimplifyCompare(unsigned Predicate, Value *LHS, Value *RHS,
|
|
const TargetData *TD = 0);
|
|
|
|
|
|
/// SimplifyBinOp - Given operands for a BinaryOperator, see if we can
|
|
/// fold the result. If not, this returns null.
|
|
Value *SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS,
|
|
const TargetData *TD = 0);
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|
|
|