[Bug target/86285] New: We don't mangle __ieee128 correctly using -mlong-double-64 -mabi=ieeelongdouble

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86285

            Bug ID: 86285
           Summary: We don't mangle __ieee128 correctly using
                    -mlong-double-64 -mabi=ieeelongdouble
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bergner at gcc dot gnu.org
  Target Milestone: ---

We don't mangle __ieee128 correctly when compiling with -mlong-double-64
-mabi=ieeelongdouble.  We should always mangle it using u9__ieee128 instead of
'e'.

bergner@pike:~$ cat ieee128.cc 
void foo(__ieee128) {}
bergner@pike:~$ g++ -S -mlong-double-64 -mabi=ibmlongdouble ieee128.cc -o- |
grep globl
        .globl _Z3foou9__ieee128
bergner@pike:~$ g++ -S -mlong-double-64 -mabi=ieeelongdouble ieee128.cc -o- |
grep globl
        .globl _Z3fooe