https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114999
Jennifer Schmitz <jschmitz at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jschmitz at gcc dot gnu.org
--- Comment #10 from Jennifer Schmitz <jschmitz at gcc dot gnu.org> ---
We are also optimizing ABS expressions and improving codegen for the following
types of test cases (for T in {uint8_t, int8_t, uint16_t, int16_t, uint32_t,
int32_t, uint64_t, int64_t, __uint128_t, __int128_t}):
T src(T x, T y)
{
T diff1 = x - y;
T diff2 = y - x;
return x > y ? diff1 : diff2;
}
T tgt(T x, T y)
{
T diff = x - y;
return x > y ? diff : -diff;
}
This seems to be a subset of the transformations described here, so it would
be good to coordinate the work: We have code ready that covers our test cases,
but would also be happy to look at other optimizations mentioned above.
