Changes in directory llvm/lib/VMCore:
Instructions.cpp updated: 1.54 -> 1.55
---
Log message:
Implement createIntegerCast and createFPCast factory methods for handling
integer and floating point cast creation. createIntegerCast generates
ZExt/SExt, BitCast or Trunc. createFPCast generates FPExt, Bitcast, or
FPTrunc.
---
Diffs of the changes: (+52 -0)
Instructions.cpp | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 52 insertions(+)
Index: llvm/lib/VMCore/Instructions.cpp
diff -u llvm/lib/VMCore/Instructions.cpp:1.54
llvm/lib/VMCore/Instructions.cpp:1.55
--- llvm/lib/VMCore/Instructions.cpp:1.54 Wed Dec 6 22:18:31 2006
+++ llvm/lib/VMCore/Instructions.cpp Mon Dec 11 18:49:44 2006
@@ -1580,6 +1580,58 @@
return create(Instruction::BitCast, S, Ty, Name, InsertBefore);
}
+CastInst *CastInst::createIntegerCast(Value *C, const Type *Ty,
+ bool isSigned, const std::string &Name,
+ Instruction *InsertBefore) {
+ assert(C->getType()->isIntegral() && Ty->isIntegral() && "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ Instruction::CastOps opcode =
+ (SrcBits == DstBits ? Instruction::BitCast :
+ (SrcBits > DstBits ? Instruction::Trunc :
+ (isSigned ? Instruction::SExt : Instruction::ZExt)));
+ return create(opcode, C, Ty, Name, InsertBefore);
+}
+
+CastInst *CastInst::createIntegerCast(Value *C, const Type *Ty,
+ bool isSigned, const std::string &Name,
+ BasicBlock *InsertAtEnd) {
+ assert(C->getType()->isIntegral() && Ty->isIntegral() && "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ Instruction::CastOps opcode =
+ (SrcBits == DstBits ? Instruction::BitCast :
+ (SrcBits > DstBits ? Instruction::Trunc :
+ (isSigned ? Instruction::SExt : Instruction::ZExt)));
+ return create(opcode, C, Ty, Name, InsertAtEnd);
+}
+
+CastInst *CastInst::createFPCast(Value *C, const Type *Ty,
+ const std::string &Name,
+ Instruction *InsertBefore) {
+ assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() &&
+ "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ Instruction::CastOps opcode =
+ (SrcBits == DstBits ? Instruction::BitCast :
+ (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
+ return create(opcode, C, Ty, Name, InsertBefore);
+}
+
+CastInst *CastInst::createFPCast(Value *C, const Type *Ty,
+ const std::string &Name,
+ BasicBlock *InsertAtEnd) {
+ assert(C->getType()->isFloatingPoint() && Ty->isFloatingPoint() &&
+ "Invalid cast");
+ unsigned SrcBits = C->getType()->getPrimitiveSizeInBits();
+ unsigned DstBits = Ty->getPrimitiveSizeInBits();
+ Instruction::CastOps opcode =
+ (SrcBits == DstBits ? Instruction::BitCast :
+ (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt));
+ return create(opcode, C, 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:
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