https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102059
--- Comment #9 from Kewen Lin <linkw at gcc dot gnu.org> ---
One more reduced test case:
fail cmd: gcc -c -O2 -flto -mcpu=power8
pass cmd: gcc -c -O2 -flto -mcpu=power8 -mno-htm -mno-power8-fusion
----------------------
__attribute__((always_inline)) int foo(int *b) {
*b += 10;
return *b;
}
#pragma GCC target "cpu=power10"
int bar(int* a){
*a = foo(a);
return 0;
}
----------------------
I confirm the mismatch subset on HTM is expected, ISA 3.1 has removed the
transnational memory support. As to OPTION_MASK_P8_FUSION, it's reasonable to
exclude it from ISA3.0 (power9), but I'm not sure if it's not a subset of
Power10 new fusion, from the current implementation it isn't.
Hi @Mike, could you help to confirm this?
