RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-13 23:18:58 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Implement new cast creation functions for both instructions and constant

Browse Source 
expressions. These will get used to reduce clutter as we replace various
calls to createInferredCast and getCast.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32191 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-12-04 20:17:56 +00:00
parent 4d42fcebe3
commit 848414e49c
4 changed files with 134 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
include/llvm/Constants.h
View File

@ -541,6 +541,24 @@ public:
const Type *Ty ///< The type to which the constant is converted
);
// @brief Create a ZExt or BitCast cast constant expression
static Constant *getZExtOrBitCast(
Constant *C, ///< The constant to zext or bitcast
const Type *Ty ///< The type to zext or bitcast C to
);
// @brief Create a SExt or BitCast cast constant expression
static Constant *getSExtOrBitCast(
Constant *C, ///< The constant to zext or bitcast
const Type *Ty ///< The type to zext or bitcast C to
);
// @brief Create a Trunc or BitCast cast constant expression
static Constant *getTruncOrBitCast(
Constant *C, ///< The constant to zext or bitcast
const Type *Ty ///< The type to zext or bitcast C to
);
// This method uses the CastInst::getCastOpcode method to infer the
// cast opcode to use.
// @brief Get a ConstantExpr Conversion operator that casts C to Ty

48
include/llvm/InstrTypes.h
View File

@ -299,6 +299,54 @@ public:
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a ZExt or BitCast cast instruction
static CastInst *createZExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which cast should be made
const std::string &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a ZExt or BitCast cast instruction
static CastInst *createZExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which operand is casted
const std::string &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a SExt or BitCast cast instruction
static CastInst *createSExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which cast should be made
const std::string &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a SExt or BitCast cast instruction
static CastInst *createSExtOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which operand is casted
const std::string &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// @brief Create a Trunc or BitCast cast instruction
static CastInst *createTruncOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which cast should be made
const std::string &Name = "", ///< Name for the instruction
Instruction *InsertBefore = 0 ///< Place to insert the instruction
);
/// @brief Create a Trunc or BitCast cast instruction
static CastInst *createTruncOrBitCast(
Value *S, ///< The value to be casted (operand 0)
const Type *Ty, ///< The type to which operand is casted
const std::string &Name, ///< The name for the instruction
BasicBlock *InsertAtEnd ///< The block to insert the instruction into
);
/// Returns the opcode necessary to cast Val into Ty using usual casting
/// rules.
static Instruction::CastOps getCastOpcode(

22
lib/VMCore/Constants.cpp
View File

@ -1534,6 +1534,24 @@ Constant *ConstantExpr::getCast(unsigned oc, Constant *C, const Type *Ty) {
return 0;
}
Constant *ConstantExpr::getZExtOrBitCast(Constant *C, const Type *Ty) {
if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return getCast(Instruction::BitCast, C, Ty);
return getCast(Instruction::ZExt, C, Ty);
}
Constant *ConstantExpr::getSExtOrBitCast(Constant *C, const Type *Ty) {
if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return getCast(Instruction::BitCast, C, Ty);
return getCast(Instruction::SExt, C, Ty);
}
Constant *ConstantExpr::getTruncOrBitCast(Constant *C, const Type *Ty) {
if (C->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return getCast(Instruction::BitCast, C, Ty);
return getCast(Instruction::Trunc, C, Ty);
}
Constant *ConstantExpr::getTrunc(Constant *C, const Type *Ty) {
assert(C->getType()->isInteger() && "Trunc operand must be integer");
assert(Ty->isIntegral() && "Trunc produces only integral");
@ -1616,14 +1634,14 @@ Constant *ConstantExpr::getBitCast(Constant *C, const Type *DstTy) {
// can't cast pointers to anything but pointers.
const Type *SrcTy = C->getType();
assert((isa<PointerType>(SrcTy) == isa<PointerType>(DstTy)) &&
"Bitcast cannot cast pointer to non-pointer and vice versa");
"BitCast cannot cast pointer to non-pointer and vice versa");
// Now we know we're not dealing with mismatched pointer casts (ptr->nonptr
// or nonptr->ptr). For all the other types, the cast is okay if source and
// destination bit widths are identical.
unsigned SrcBitSize = SrcTy->getPrimitiveSizeInBits();
unsigned DstBitSize = DstTy->getPrimitiveSizeInBits();
assert(SrcBitSize == DstBitSize && "Bitcast requies types of same width");
assert(SrcBitSize == DstBitSize && "BitCast requies types of same width");
return getFoldedCast(Instruction::BitCast, C, DstTy);
}

48
lib/VMCore/Instructions.cpp
View File

@ -1500,6 +1500,54 @@ CastInst *CastInst::create(Instruction::CastOps op, Value *S, const Type *Ty,
return 0;
}
CastInst *CastInst::createZExtOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
Instruction *InsertBefore) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return create(Instruction::ZExt, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::createZExtOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return create(Instruction::ZExt, S, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::createSExtOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
Instruction *InsertBefore) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return create(Instruction::SExt, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::createSExtOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return create(Instruction::SExt, S, Ty, Name, InsertAtEnd);
}
CastInst *CastInst::createTruncOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
Instruction *InsertBefore) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertBefore);
return create(Instruction::Trunc, S, Ty, Name, InsertBefore);
}
CastInst *CastInst::createTruncOrBitCast(Value *S, const Type *Ty,
const std::string &Name,
BasicBlock *InsertAtEnd) {
if (S->getType()->getPrimitiveSizeInBits() == Ty->getPrimitiveSizeInBits())
return create(Instruction::BitCast, S, Ty, Name, InsertAtEnd);
return create(Instruction::Trunc, S, Ty, Name, InsertAtEnd);
}
// Provide a way to get a "cast" where the cast opcode is inferred from the
// types and size of the operand. This, basically, is a parallel of the
// logic in the checkCast function below. This axiom should hold: