https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95185
Arjun Shankar <arjun.is at lostca dot se> changed:
What |Removed |Added
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CC| |arjun.is at lostca dot se
--- Comment #3 from Arjun Shankar <arjun.is at lostca dot se> ---
If the code is compiled as C, gcc produces essentially the same code as clang
with some differences in the schedule of instructions:
https://godbolt.org/z/8nsq16Pen
It's when the code is compiled as C++ that gcc does worse:
https://godbolt.org/z/dK8hTEhjr
The difference lies in the front-ends. The C front-end already appears to know
that this is a XOR. testcase.c.004t.original looks like:
return (int) (x < 0 ^ y <= 0);
On the other hand, g++ outputs:
return <retval> = x >= 0 == y <= 0;
