[Bug target/68701] [4.9/5/6 Regression] "gcc -m32 -finstrument-functions -ffixed-ebp" produces internal compiler error

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68701

--- Comment #12 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to henric from comment #11)
> I have noted that the compilation works with any 2 out of the 3 gcc-flags!
> 
> > gcc -finstrument-functions -ffixed-ebp a.c -> successfully compiles!
> > gcc -m32 -ffixed-ebp a.c                   -> successfully compiles!
> > gcc -m32 -finstrument-functions a.c        -> successfully compiles!
> 
> > gcc -m32 -finstrument-functions -ffixed-ebp a.c -> fails with internal error
> 
> 
> Given that -ffixed-ebp works individually with both -finstrument-functions
> and -m32, but not together, maybe it is tricky to error out on -ffixed-ebp,
> not destroying something that already works?

Please try adding -maccumulate-outgoing-args. Using this option, your code
should always compile OK.

> Btw, in the company that I work for (>100.000 employees worldwide), we have
> legacy code that relies on -ffixed-ebp, so please don't be too aggressive
> when if you decide to error out on compilation with -ffixed-ebp.

The code *will* compile, but a warning that -maccumulate-outgoing-args was
enabled to satisfy -ffixed-ebp will be emitted during compilation.