https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87205
Glen Joseph Fernandes <glenjofe at gmail dot com> changed:
What |Removed |Added
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CC| |glenjofe at gmail dot com
--- Comment #1 from Glen Joseph Fernandes <glenjofe at gmail dot com> ---
Interestingly, I observed that moving the default label first produces a better
result:
void f(int);
void h(unsigned i)
{
switch (i) {
default: __builtin_unreachable();
case 0: f(42); break;
case 1: f(42); break;
case 2: f(42); break;
case 3: f(42); break;
case 4: f(42); break;
case 5: f(42); break;
}
}
At -O2 or higher generates:
h(unsigned int):
mov edi, 42
jmp f(int)
