[LLVMbugs] [Bug 6906] New: VFP instructions miscompiled

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri Apr 23 13:10:04 PDT 2010


           Summary: VFP instructions miscompiled
           Product: libraries
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: ARM
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: alexmac at adobe.com
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=4724)
 --> (http://llvm.org/bugs/attachment.cgi?id=4724)
Fix the ARM tablegen files to output certain instructions in an alternate

The assembler currently shipping on OSX with xcode fails to compile some VFP
instructions when using a particular syntax, this patch works around those bugs
by outputting the same instructions in a syntax that the assembler can handle
correctly. I assume (although haven't verified) that gcc must not be using the
syntax llvm currently uses or it would also be producing invalid code when
compiling for armv6 with vfp enabled.

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