[LLVMbugs] [Bug 6572] New: DAGCombiner.cpp incorrectly calls APInt::getLowBitsSet

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6572

           Summary: DAGCombiner.cpp incorrectly calls APInt::getLowBitsSet
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: micah.villmow at amd.com
                CC: llvmbugs at cs.uiuc.edu


====
//depot/stg/opencl/drivers/opencl/compiler/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp#19
-
/home/mvillmow/Source/stg/opencl/drivers/opencl/compiler/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
====
@@ -5344,7 +5344,7 @@
     if (SimplifyDemandedBits(Value,
                              APInt::getLowBitsSet(
                               
Value.getValueType().getScalarType().getSizeInBits(),
-                               ST->getMemoryVT().getSizeInBits())))
+                              
ST->getMemoryVT().getScalarType().getSizeInBits())))
       return SDValue(N, 0);
   }





The problem is that ST->getMemoryVT().getSizeInBits() doesn't match
Value.getValueType().getScalarType().getSizeInBits when ST is a vector.

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