[LLVMbugs] [Bug 10299] New: clang does not know FP registers gcc does

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10299

           Summary: clang does not know FP registers gcc does
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: joel.sherrill at oarcorp.com
                CC: llvmbugs at cs.uiuc.edu


In RTEMS, we use some inline assembly to assist in FPU context switches.  clang
has trouble with the two attached test cases.  I think we use two registers
clang does not know about yet.  This can likely be reduced but I thought it
better to stick with two real examples so when this is addressed, it is more
likely to let this code in RTEMS compile.

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