[llvm-commits] [llvm] r81634 - /llvm/trunk/lib/VMCore/ConstantsContext.h

[Dan Gohman]

Author: djg
Date: Sat Sep 12 17:02:17 2009
New Revision: 81634

URL: http://llvm.org/viewvc/llvm-project?rev=81634&view=rev
Log:
Preserve the inbounds flag, so that the constant folder doesn't
recompute it.

Modified:
    llvm/trunk/lib/VMCore/ConstantsContext.h

Modified: llvm/trunk/lib/VMCore/ConstantsContext.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/VMCore/ConstantsContext.h?rev=81634&r1=81633&r2=81634&view=diff

==============================================================================
--- llvm/trunk/lib/VMCore/ConstantsContext.h (original)
+++ llvm/trunk/lib/VMCore/ConstantsContext.h Sat Sep 12 17:02:17 2009
@@ -437,8 +437,11 @@
     case Instruction::GetElementPtr:
       // Make everyone now use a constant of the new type...
       std::vector<Value*> Idx(OldC->op_begin()+1, OldC->op_end());
-      New = ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
-                                             &Idx[0], Idx.size());
+      New = cast<GEPOperator>(OldC)->isInBounds() ?
+        ConstantExpr::getInBoundsGetElementPtrTy(NewTy, OldC->getOperand(0),
+                                                 &Idx[0], Idx.size()) :
+        ConstantExpr::getGetElementPtrTy(NewTy, OldC->getOperand(0),
+                                         &Idx[0], Idx.size());
       break;
     }