[Bug other/59927] New: [4.9 Regression] ICE sorry, unimplemented: ms_abi attribute requires -maccumulate-outgoing-args or subtarget optimization implying it

[doko at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59927

            Bug ID: 59927
           Summary: [4.9 Regression] ICE sorry, unimplemented: ms_abi
                    attribute requires -maccumulate-outgoing-args or
                    subtarget optimization implying it
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

Created attachment 31939
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31939&action=edit
preprocessed source

seen with trunk 20140122, works with the 4.8 branch, lowering to -O0 works
around the issue.

$ gcc -c -g -O2 fdi.i 
fdi.c: In function 'fdi_decomp':
fdi.c:2005:33: sorry, unimplemented: ms_abi attribute requires
-maccumulate-outgoing-args or subtarget optimization implying it
fdi.c:2005: confused by earlier errors, bailing out