[LLVMbugs] [Bug 10002] New: Wrongfully assuming RHS is always unsigned

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10002

           Summary: Wrongfully assuming RHS is always unsigned
           Product: clang
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: LLVM Codegen
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: vslugovsky at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=6638)
 --> (http://llvm.org/bugs/attachment.cgi?id=6638)
A simple test case which fails

CGExprScalar.cpp: EmitShl(...) may produce an integer cast for a right hand
side expression, assuming that it is unsigned. Please see the attached test
case which produces a wrong IR and a patch to fix this problem.

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