[LLVMbugs] [Bug 1932] New: Invalid float division instcombine

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1932

           Summary: Invalid float division instcombine
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


define double @fold(i1 %a, double %b) {
%s = select i1 %a, double 0., double 1.
%c = fdiv double %b, %s
ret double %c
}

folds to

define double @fold(i1 %a, double %b) nounwind  {
        %c = fdiv double %b, 1.000000e+00               ; <double> [#uses=1]
        ret double %c
}

using opt -std-compile-opts.  This is wrong!


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