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

[Chris Lattner]

Changes in directory llvm/lib/VMCore:

Constants.cpp updated: 1.60 -> 1.61

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Log message:

Add support for constant expr shifts


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Diffs of the changes:  (+7 -0)

Index: llvm/lib/VMCore/Constants.cpp
diff -u llvm/lib/VMCore/Constants.cpp:1.60 llvm/lib/VMCore/Constants.cpp:1.61
--- llvm/lib/VMCore/Constants.cpp:1.60	Thu Oct 23 00:21:48 2003
+++ llvm/lib/VMCore/Constants.cpp	Wed Nov  5 13:52:52 2003
@@ -493,6 +493,13 @@
   } else if (getOpcode() == Instruction::Cast) {
     assert(getOperand(0) == From && "Cast only has one use!");
     Replacement = ConstantExpr::getCast(To, getType());
+  } else if (getOpcode() == Instruction::Shl ||
+             getOpcode() == Instruction::Shr) {
+    Constant *C1 = getOperand(0);
+    Constant *C2 = getOperand(1);
+    if (C1 == From) C1 = To;
+    if (C2 == From) C2 = To;
+    Replacement = ConstantExpr::getShift(getOpcode(), C1, C2);
   } else if (getNumOperands() == 2) {
     Constant *C1 = getOperand(0);
     Constant *C2 = getOperand(1);