Use correct size for address space in BasicAA.

The tests just hit this with a different sized
address space since I haven't figured out how
to use this to break it.

I thought I committed this a long time ago,
and I'm not sure why missing this hasn't caused
any problems.

llvm-svn: 194903

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/Analysis/BasicAliasAnalysis.cpp b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
index bf92969..b2c2011 100644
--- a/llvm/lib/Analysis/BasicAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/BasicAliasAnalysis.cpp
@@ -326,6 +326,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
       continue;
     }
 
+    unsigned AS = GEPOp->getPointerAddressSpace();
     // Walk the indices of the GEP, accumulating them into BaseOff/VarIndices.
     gep_type_iterator GTI = gep_type_begin(GEPOp);
     for (User::const_op_iterator I = GEPOp->op_begin()+1,
@@ -354,7 +355,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
       // If the integer type is smaller than the pointer size, it is implicitly
       // sign extended to pointer size.
       unsigned Width = Index->getType()->getIntegerBitWidth();
-      if (TD->getPointerSizeInBits() > Width)
+      if (TD->getPointerSizeInBits(AS) > Width)
         Extension = EK_SignExt;
 
       // Use GetLinearExpression to decompose the index into a C1*V+C2 form.
@@ -382,7 +383,7 @@ DecomposeGEPExpression(const Value *V, int64_t &BaseOffs,
 
       // Make sure that we have a scale that makes sense for this target's
       // pointer size.
-      if (unsigned ShiftBits = 64-TD->getPointerSizeInBits()) {
+      if (unsigned ShiftBits = 64 - TD->getPointerSizeInBits(AS)) {
         Scale <<= ShiftBits;
         Scale = (int64_t)Scale >> ShiftBits;
       }