mirror of
https://github.com/c64scene-ar/llvm-6502.git
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430444b102
gets involved, and we end up trying to recursively acquire a writer lock. The fix for this is slightly horrible, and involves passing a boolean "locked" parameter around in Constants.cpp, but it's better than having locked and unlocked versions of most of the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73790 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
3.0 KiB
C++
64 lines
3.0 KiB
C++
//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
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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 defines the (internal) constant folding interfaces for LLVM. These
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// interfaces are used by the ConstantExpr::get* methods to automatically fold
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// constants when possible.
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//
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// These operators may return a null object if they don't know how to perform
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// the specified operation on the specified constant types.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CONSTANTFOLDING_H
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#define CONSTANTFOLDING_H
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namespace llvm {
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class Value;
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class Constant;
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class Type;
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// Constant fold various types of instruction...
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Constant *ConstantFoldCastInstruction(
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unsigned opcode, ///< The opcode of the cast
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const Constant *V, ///< The source constant
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const Type *DestTy, ///< The destination type
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bool locked = true
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);
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Constant *ConstantFoldSelectInstruction(const Constant *Cond,
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const Constant *V1,
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const Constant *V2,
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bool locked = true);
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Constant *ConstantFoldExtractElementInstruction(const Constant *Val,
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const Constant *Idx);
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Constant *ConstantFoldInsertElementInstruction(const Constant *Val,
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const Constant *Elt,
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const Constant *Idx);
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Constant *ConstantFoldShuffleVectorInstruction(const Constant *V1,
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const Constant *V2,
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const Constant *Mask);
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Constant *ConstantFoldExtractValueInstruction(const Constant *Agg,
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const unsigned *Idxs,
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unsigned NumIdx);
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Constant *ConstantFoldInsertValueInstruction(const Constant *Agg,
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const Constant *Val,
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const unsigned* Idxs,
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unsigned NumIdx);
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Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
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const Constant *V2,
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bool locked = true);
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Constant *ConstantFoldCompareInstruction(unsigned short predicate,
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const Constant *C1,
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const Constant *C2);
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Constant *ConstantFoldGetElementPtr(const Constant *C, Constant* const *Idxs,
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unsigned NumIdx, bool locked = true);
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} // End llvm namespace
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#endif
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