[LLVMbugs] [Bug 13556] New: ARM AsmPrinter doesn't support %H modifier in inline ASM

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=13556

             Bug #: 13556
           Summary: ARM AsmPrinter doesn't support %H modifier in inline
                    ASM
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: weimingz at codeaurora.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 9015
  --> http://llvm.org/bugs/attachment.cgi?id=9015
Patch and test case

In ARM inline AMM, %H represents the highest-numbered register of a pair. 
Routines like atomic read of 64-bit value needs this modifier.
Currently, ARMAsmPrinter doesn't support this modifier.

A patch and a test case are attached.

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