[llvm-bugs] [Bug 30231] New: __builtin_dwarf_cfa suspect on ARM

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30231

            Bug ID: 30231
           Summary: __builtin_dwarf_cfa suspect on ARM
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: ARM
          Assignee: unassignedbugs at nondot.org
          Reporter: hfinkel at anl.gov
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Please see:

  https://llvm.org/bugs/show_bug.cgi?id=26761#c3
and:
  https://llvm.org/bugs/show_bug.cgi?id=26761#c4

But, in short, it looks like ARM probably needs to lower __builtin_dwarf_cfa
like Mips and PowerPC do (by lowering ISD::EH_DWARF_CFA directly), and not
using the default x86-inspired method. See r280350.

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