[LLVMbugs] [Bug 9826] New: [MC] Should use symbolic register names in the .cfi_* directives

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon May 2 07:16:18 PDT 2011


           Summary: [MC] Should use symbolic register names in the .cfi_*
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu

Instead of printing:

    .cfi_offset 6, -16

We could print

    .cfi_offset %rbp, -16

Both produce bit identical results, but the second one is more readable. In the
interest of efficiency, the MCStreamer should probably stay the same: It is
given a register dwarf num. This means we need a dwarf num -> name mapping. We
can probably tblgen one.

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