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38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
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//===-- InstructionSimplify.h - Fold instructions into simpler forms ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file declares routines for folding instructions into simpler forms that
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// do not require creating new instructions. For example, this does constant
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// folding, and can handle identities like (X&0)->0.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
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#define LLVM_ANALYSIS_INSTRUCTIONSIMPLIFY_H
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namespace llvm {
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class Value;
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class TargetData;
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/// SimplifyCompare - Given operands for a CmpInst, see if we can
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/// fold the result. If not, this returns null.
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Value *SimplifyCompare(unsigned Predicate, Value *LHS, Value *RHS,
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const TargetData *TD = 0);
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/// SimplifyBinOp - Given operands for a BinaryOperator, see if we can
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/// fold the result. If not, this returns null.
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Value *SimplifyBinOp(unsigned Opcode, Value *LHS, Value *RHS,
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const TargetData *TD = 0);
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} // end namespace llvm
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#endif
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