[LLVMbugs] [Bug 1627] New: [PowerPC] Miscompilation of float selection including NaNs

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Aug 28 11:07:38 PDT 2007


           Summary: [PowerPC] Miscompilation of float selection including
           Product: new-bugs
           Version: unspecified
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: leo.fink at gmx.net
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=1094)
 --> (http://llvm.org/bugs/attachment.cgi?id=1094)
C++ source code: main function

The attached code returns 1 when compiled on llvm-gcc4 with -O1 or greater,
which it shouldn't.

Subversion revision 41537, arch=ppc.

To reproduce in terminal:

$ /opt/llvm-gcc/bin/g++ main.cpp -O0 -o NaNTest
$ ./NaNTest
$ echo $?

$ /opt/llvm-gcc/bin/g++ main.cpp -O1 -o NaNTest
$ ./NaNTest
$ echo $?

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