[Bug driver/47785] GCC with -flto does not pass -Wa/-Xassembler options to the assembler

[gcc--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47785

--- Comment #21 from Thomas Weißschuh <g...@t-8ch.de> ---
The commited fix produces false positives for assembler options that do not
influence the compilation output directly.
For example "-a=$FILE" to create assembler listings. (Whose target files have
to differ between different input files by design.)