https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62631
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|tree-optimization |target
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot
gnu.org
--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> * For the mult part, rtx_code calls sparc_rtx_cost, which has
>
> case MULT:
> if (float_mode_p)
> *total = sparc_costs->float_mul;
> else if (! TARGET_HARD_MUL)
> *total = COSTS_N_INSNS (25);
>
> On SPARCv9/-m64, TARGET_HARD_MUL is false, so we get the 25*4 = 100 part,
> unlike v8, which explains why the test only fails for 64-bit.
Ugh, thanks for spotting it, this looks like an annoying oversight.
