mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-02 22:04:55 +00:00
3bfbc4587a
how to fold notionally-out-of-bounds array getelementptr indices instead of just doing these in lib/Analysis/ConstantFolding.cpp, because it can be done in a fairly general way without TargetData, and because not all constants are visited by lib/Analysis/ConstantFolding.cpp. This enables more constant folding. Also, set the "inbounds" flag when the getelementptr indices are one-past-the-end. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81483 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
3.4 KiB
C++
72 lines
3.4 KiB
C++
//===-- ConstantFolding.h - Internal Constant Folding Interface -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the (internal) constant folding interfaces for LLVM. These
|
|
// interfaces are used by the ConstantExpr::get* methods to automatically fold
|
|
// constants when possible.
|
|
//
|
|
// These operators may return a null object if they don't know how to perform
|
|
// the specified operation on the specified constant types.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef CONSTANTFOLDING_H
|
|
#define CONSTANTFOLDING_H
|
|
|
|
namespace llvm {
|
|
class Value;
|
|
class Constant;
|
|
class Type;
|
|
class LLVMContext;
|
|
|
|
// Constant fold various types of instruction...
|
|
Constant *ConstantFoldCastInstruction(
|
|
LLVMContext &Context,
|
|
unsigned opcode, ///< The opcode of the cast
|
|
const Constant *V, ///< The source constant
|
|
const Type *DestTy ///< The destination type
|
|
);
|
|
Constant *ConstantFoldSelectInstruction(LLVMContext &Context,
|
|
const Constant *Cond,
|
|
const Constant *V1,
|
|
const Constant *V2);
|
|
Constant *ConstantFoldExtractElementInstruction(LLVMContext &Context,
|
|
const Constant *Val,
|
|
const Constant *Idx);
|
|
Constant *ConstantFoldInsertElementInstruction(LLVMContext &Context,
|
|
const Constant *Val,
|
|
const Constant *Elt,
|
|
const Constant *Idx);
|
|
Constant *ConstantFoldShuffleVectorInstruction(LLVMContext &Context,
|
|
const Constant *V1,
|
|
const Constant *V2,
|
|
const Constant *Mask);
|
|
Constant *ConstantFoldExtractValueInstruction(LLVMContext &Context,
|
|
const Constant *Agg,
|
|
const unsigned *Idxs,
|
|
unsigned NumIdx);
|
|
Constant *ConstantFoldInsertValueInstruction(LLVMContext &Context,
|
|
const Constant *Agg,
|
|
const Constant *Val,
|
|
const unsigned* Idxs,
|
|
unsigned NumIdx);
|
|
Constant *ConstantFoldBinaryInstruction(LLVMContext &Context,
|
|
unsigned Opcode, const Constant *V1,
|
|
const Constant *V2);
|
|
Constant *ConstantFoldCompareInstruction(LLVMContext &Context,
|
|
unsigned short predicate,
|
|
const Constant *C1,
|
|
const Constant *C2);
|
|
Constant *ConstantFoldGetElementPtr(LLVMContext &Context, const Constant *C,
|
|
bool inBounds,
|
|
Constant* const *Idxs, unsigned NumIdx);
|
|
} // End llvm namespace
|
|
|
|
#endif
|