[Bug middle-end/61577] [4.9.0 Regression] can't compile on hp-ux v3 ia64

[bugzilla-gcc at thewrittenword dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577

--- Comment #252 from The Written Word <bugzilla-gcc at thewrittenword dot com> ---
(In reply to Larkin Nickle from comment #249)
> Then, if libcpp's Makefile is patched so that charset.c is built with -O1, I
> eventually run into other errors:
> 
> ../../../../sources/gcc-11.1.0-new/libgcc/libgcov-interface.c: In function
> 'gcov_clear':
> ../../../../sources/gcc-11.1.0-new/libgcc/libgcov-interface.c:143:1:
> internal compiler error: Illegal instruction
>   143 | }
>       | ^
> libbacktrace could not find executable to open 

I tried building 10.3.0 using the same patches as in 11.1.0 and ran into the
above for the 10.3.0 build.