From: Dan Gohman <gohman@apple.com>
Date: Tue, 21 Jul 2009 23:19:40 +0000 (+0000)
Subject: Permit the IntPtrTy argument to isEliminableCastPair to be null,
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=295643b8050d4c45b06032690d707e7281e82c92;p=oota-llvm.git

Permit the IntPtrTy argument to isEliminableCastPair to be null,
to help support use when TargetData is not available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76675 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/InstrTypes.h b/include/llvm/InstrTypes.h
index 1ee2a4b3318..c3c48af53f2 100644
--- a/include/llvm/InstrTypes.h
+++ b/include/llvm/InstrTypes.h
@@ -479,7 +479,7 @@ public:
     const Type *SrcTy, ///< SrcTy of 1st cast
     const Type *MidTy, ///< DstTy of 1st cast & SrcTy of 2nd cast
     const Type *DstTy, ///< DstTy of 2nd cast
-    const Type *IntPtrTy ///< Integer type corresponding to Ptr types
+    const Type *IntPtrTy ///< Integer type corresponding to Ptr types, or null
   );
 
   /// @brief Return the opcode of this CastInst
diff --git a/lib/VMCore/Instructions.cpp b/lib/VMCore/Instructions.cpp
index e04d54cee37..5e5ce64c1cb 100644
--- a/lib/VMCore/Instructions.cpp
+++ b/lib/VMCore/Instructions.cpp
@@ -1890,6 +1890,8 @@ unsigned CastInst::isEliminableCastPair(
       return 0;
     case 7: { 
       // ptrtoint, inttoptr -> bitcast (ptr -> ptr) if int size is >= ptr size
+      if (!IntPtrTy)
+        return 0;
       unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
       unsigned MidSize = MidTy->getScalarSizeInBits();
       if (MidSize >= PtrSize)
@@ -1929,6 +1931,8 @@ unsigned CastInst::isEliminableCastPair(
       return 0;
     case 13: {
       // inttoptr, ptrtoint -> bitcast if SrcSize<=PtrSize and SrcSize==DstSize
+      if (!IntPtrTy)
+        return 0;
       unsigned PtrSize = IntPtrTy->getScalarSizeInBits();
       unsigned SrcSize = SrcTy->getScalarSizeInBits();
       unsigned DstSize = DstTy->getScalarSizeInBits();