https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78098
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Martin Liška from comment #4)
> Hello H.J.
> As interrupt handler attribute is very specific and rare attribute, I'm
> suggesting to basically skip all functions in IPA ICF analysis that have
> such attribute.
>
> Does it work for you?
I'd like to keep it as a "feature" to detect code duplication in
interrupt handler, like
[hjl@gnu-6 pr78098]$ /export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -Os -m32 -mno-sse -mno-mmx
-mno-80387 -S -o foo1.s foo1.i
foo1.i: In function ‘foo1’:
foo1.i:10:33: error: interrupt service routine ‘foo2’ can't be called directly
__attribute__((interrupt)) void foo2 (void *p)
^~~~
foo1.i:10:33: note: is interrupt service routine ‘foo1’ identical to ‘foo2’?
[hjl@gnu-6 pr78098]$
