[Bug c/109534] -fdirectives-only does not work with assembler-with-cpp

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109534

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So from what I understand this part is what you want:
```
diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index 16bb07f2cdc..2825ef3f037 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -1471,12 +1471,12 @@ static const struct compiler default_compilers[] =
   {".S", "@assembler-with-cpp", 0, 0, 0},
   {"@assembler-with-cpp",
 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
-   "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
+   "%(trad_capable_cpp) -lang-asm %(cpp_options) %{!E:-fno-directives-only} \
       %{E|M|MM:%(cpp_debug_options)}\
       %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
        as %(asm_debug) %(asm_options) %|.s %A }}}}"
 #else
-   "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
+   "%(trad_capable_cpp) -lang-asm %(cpp_options) %{!E:-fno-directives-only} \
       %{E|M|MM:%(cpp_debug_options)}\
       %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
        as %(asm_debug) %(asm_options) %m.s %A }}}}"

```
Because -fno-directives-only is needed without -E.
Secondary is the issue of what is produced.