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

[Chris Lattner]

Changes in directory llvm/lib/VMCore:

Constants.cpp updated: 1.86 -> 1.87

---
Log message:

Add ConstantExpr::get(Sign|Zero)Extend methods


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Diffs of the changes:  (+16 -0)

Index: llvm/lib/VMCore/Constants.cpp
diff -u llvm/lib/VMCore/Constants.cpp:1.86 llvm/lib/VMCore/Constants.cpp:1.87
--- llvm/lib/VMCore/Constants.cpp:1.86	Tue Mar 30 20:56:11 2004
+++ llvm/lib/VMCore/Constants.cpp	Sun Apr  4 18:20:30 2004
@@ -1131,6 +1131,22 @@
   return ExprConstants.getOrCreate(Ty, Key);
 }
 
+Constant *ConstantExpr::getSignExtend(Constant *C, const Type *Ty) {
+  assert(C->getType()->isInteger() && Ty->isInteger() &&
+         C->getType()->getPrimitiveSize() <= Ty->getPrimitiveSize() &&
+         "This is an illegal sign extension!");
+  C = ConstantExpr::getCast(C, C->getType()->getSignedVersion());
+  return ConstantExpr::getCast(C, Ty);
+}
+
+Constant *ConstantExpr::getZeroExtend(Constant *C, const Type *Ty) {
+  assert(C->getType()->isInteger() && Ty->isInteger() &&
+         C->getType()->getPrimitiveSize() <= Ty->getPrimitiveSize() &&
+         "This is an illegal zero extension!");
+  C = ConstantExpr::getCast(C, C->getType()->getUnsignedVersion());
+  return ConstantExpr::getCast(C, Ty);
+}
+
 Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
                               Constant *C1, Constant *C2) {
   if (Opcode == Instruction::Shl || Opcode == Instruction::Shr)