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llvm-mirror/include/llvm/IR/Value.def
David Majnemer 3deb8be573 [IR] Add support for empty tokens
When working with tokens, it is often the case that one has instructions
which consume a token and produce a new token.  Currently, we have no
mechanism to represent an initial token state.

Instead, we can create a notional "empty token" by inventing a new
constant which captures the semantics we would like.  This new constant
is called ConstantTokenNone and is written textually as "token none".

Differential Revision: http://reviews.llvm.org/D14581

llvm-svn: 252811
2015-11-11 21:57:16 +00:00

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2.7 KiB
C++

//===-------- llvm/IR/Value.def - File that describes Values ---v-*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains descriptions of the various LLVM values. This is
// used as a central place for enumerating the different values.
//
//===----------------------------------------------------------------------===//
// NOTE: NO INCLUDE GUARD DESIRED!
// Provide definitions of macros so that users of this file do not have to
// define everything to use it...
//
#if !(defined HANDLE_GLOBAL_VALUE || defined HANDLE_CONSTANT || \
defined HANDLE_INSTRUCTION || defined HANDLE_INLINE_ASM_VALUE || \
defined HANDLE_METADATA_VALUE || defined HANDLE_VALUE || \
defined HANDLE_CONSTANT_MARKER)
#error "Missing macro definition of HANDLE_VALUE*"
#endif
#ifndef HANDLE_GLOBAL_VALUE
#define HANDLE_GLOBAL_VALUE(ValueName) HANDLE_CONSTANT(ValueName)
#endif
#ifndef HANDLE_CONSTANT
#define HANDLE_CONSTANT(ValueName) HANDLE_VALUE(ValueName)
#endif
#ifndef HANDLE_INSTRUCTION
#define HANDLE_INSTRUCTION(ValueName) HANDLE_VALUE(ValueName)
#endif
#ifndef HANDLE_INLINE_ASM_VALUE
#define HANDLE_INLINE_ASM_VALUE(ValueName) HANDLE_VALUE(ValueName)
#endif
#ifndef HANDLE_METADATA_VALUE
#define HANDLE_METADATA_VALUE(ValueName) HANDLE_VALUE(ValueName)
#endif
#ifndef HANDLE_VALUE
#define HANDLE_VALUE(ValueName)
#endif
#ifndef HANDLE_CONSTANT_MARKER
#define HANDLE_CONSTANT_MARKER(MarkerName, ValueName)
#endif
HANDLE_VALUE(Argument)
HANDLE_VALUE(BasicBlock)
HANDLE_GLOBAL_VALUE(Function)
HANDLE_GLOBAL_VALUE(GlobalAlias)
HANDLE_GLOBAL_VALUE(GlobalVariable)
HANDLE_CONSTANT(UndefValue)
HANDLE_CONSTANT(BlockAddress)
HANDLE_CONSTANT(ConstantExpr)
HANDLE_CONSTANT(ConstantAggregateZero)
HANDLE_CONSTANT(ConstantDataArray)
HANDLE_CONSTANT(ConstantDataVector)
HANDLE_CONSTANT(ConstantInt)
HANDLE_CONSTANT(ConstantFP)
HANDLE_CONSTANT(ConstantArray)
HANDLE_CONSTANT(ConstantStruct)
HANDLE_CONSTANT(ConstantVector)
HANDLE_CONSTANT(ConstantPointerNull)
HANDLE_CONSTANT(ConstantTokenNone)
HANDLE_METADATA_VALUE(MetadataAsValue)
HANDLE_INLINE_ASM_VALUE(InlineAsm)
HANDLE_INSTRUCTION(Instruction)
// Enum values starting at InstructionVal are used for Instructions;
// don't add new values here!
HANDLE_CONSTANT_MARKER(ConstantFirstVal, Function)
HANDLE_CONSTANT_MARKER(ConstantLastVal, ConstantTokenNone)
#undef HANDLE_GLOBAL_VALUE
#undef HANDLE_CONSTANT
#undef HANDLE_INSTRUCTION
#undef HANDLE_METADATA_VALUE
#undef HANDLE_INLINE_ASM_VALUE
#undef HANDLE_VALUE
#undef HANDLE_CONSTANT_MARKER