[llvm-commits] CVS: llvm/lib/VMCore/Constants.cpp

[Reid Spencer]

Changes in directory llvm/lib/VMCore:

Constants.cpp updated: 1.184 -> 1.185
---
Log message:

Implement getIntegerCast and getFPCast for ConstantExpr. These are similar
to the createIntegerCast and createFPCast for CastInst instructions.


---
Diffs of the changes:  (+23 -0)

 Constants.cpp |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+)


Index: llvm/lib/VMCore/Constants.cpp
diff -u llvm/lib/VMCore/Constants.cpp:1.184 llvm/lib/VMCore/Constants.cpp:1.185
--- llvm/lib/VMCore/Constants.cpp:1.184	Fri Dec  8 12:06:15 2006
+++ llvm/lib/VMCore/Constants.cpp	Mon Dec 11 18:51:07 2006
@@ -1514,6 +1514,29 @@
   return getCast(Instruction::BitCast, S, Ty);
 }
 
+Constant *ConstantExpr::getIntegerCast(Constant *C, const Type *Ty, 
+                                       bool isSigned) {
+  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 getCast(opcode, C, Ty);
+}
+
+Constant *ConstantExpr::getFPCast(Constant *C, const Type *Ty) {
+  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 getCast(opcode, 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");