[llvm-bugs] [Bug 33953] New: .cfi_return_column not supported

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33953

            Bug ID: 33953
           Summary: .cfi_return_column not supported
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: xdje42 at gmail.com
                CC: llvm-bugs at lists.llvm.org

GAS supports .cfi_return_column:

https://sourceware.org/binutils/docs-2.29/as/CFI-directives.html#g_t_002ecfi_005freturn_005fcolumn-register

I'm getting the following:

magenta$ prebuilt/downloads/clang+llvm-x86_64-linux/bin/clang --version
Fuchsia clang version 6.0.0
(/b/s/w/ir/cache/git/fuchsia.googlesource.com-third_party-clang
36d969c2a922522b11a461fc36c12d6ed7a03d37) (/b/s/w/ir/cache/git/fuchs\
ia.googlesource.com-third_party-llvm e95e3157f4334e1953998bbe393bbac97f1ad72d)
(based on LLVM 6.0.0git-e95e3157f43git-e95e3157f43)

...

<instantiation>:4:5: error: unknown directive
    .cfi_return_column 33
    ^
<instantiation>:1:1: note: while in macro instantiation
...

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