[LLVMbugs] [Bug 7774] New: undefined behavior at AlphaISelDAGToDAG.cpp, (116:28)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=7774

           Summary: undefined behavior at AlphaISelDAGToDAG.cpp, (116:28)
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: llvmbugs at cs.uiuc.edu


This is clang 109870 on x86.

This command from "make check":

llc < /home/regehr/z/llvm-2/test/CodeGen/Alpha/2007-11-27-mulneg3.ll
-march=alpha

shifts a 32-bit number by 63 places.  Same thing happens in the next line of
code.  

The fix is obvious.

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