[llvm-bugs] [Bug 43248] New: [GNU C extension] support `asm inline`

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43248

            Bug ID: 43248
           Summary: [GNU C extension] support `asm inline`
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: ndesaulniers at google.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Looks like GCC 8.3 added support for `asm inline`.  Seems to be another
qualifier like `asm volatile` but instead the cost model assumes the size is
[near-]zero(?).

https://godbolt.org/z/w3_mc8
https://github.com/gcc-mirror/gcc/commit/6de46ad5326fc5e6b730a2feb8c62d09c1561f92
Which looks like the qualifier was added to this page:
https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html

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