[Bug target/102374] New: Should ignore spaces in target attribute

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102374

            Bug ID: 102374
           Summary: Should ignore spaces in target attribute
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---

Take:
void calculate_sse(void) __attribute__ ((__target__ ("no-avx, sse2")));

Currently we error out:
<source>:1:6: error: attribute ' sse2' argument 'target' is unknown
    1 | void calculate_sse(void) __attribute__ ((__target__ ("no-avx, sse2")));
      |      ^~~~~~~~~~~~~

It was not so obvious why though, the problem is there is a space after the
comma.