https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66382
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |segher at gcc dot gnu.org
--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Given the following program:
__float128 f(__float128 a, __float128 b) { return a*b; }
When compiled with:
gcc -Wall -W -O2 mulf.c -mfloat128 -mcpu=power8
you currently get (boring stuff cut out):
mflr 0
std 0,16(1)
stdu 1,-32(1)
bl __mulkf3
nop
addi 1,1,32
ld 0,16(1)
mtlr 0
blr
The task is to either optimise __mulkf3 to use vector math, or to
expand it inline even, where that make sense (this may more often
make sense with -ffast-math).
