https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40748
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |marxin at gcc dot gnu.org
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #3)
> We also miss the even simpler case that should be optimized to "return n;"
>
> int foo(int n){
> switch(n){
> case 0:
> return 0;
> case 1:
> return 1;
> case 2:
> return 2;
> case 3:
> return 3;
> default:
> __builtin_unreachable();
> }
> }
>
> llvm performs the expected optimization in both cases.
Note this one is implemented since 9.1.0.
