https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82180
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |kcy at codesourcery dot com
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #0)
> Trying a bit harder, I can fix the problem by skipping over the unaligned
> register here:
> ...
> diff --git a/gcc/lra-spills.c b/gcc/lra-spills.c
> index 492fc18..6ecfad2 100644
> --- a/gcc/lra-spills.c
> +++ b/gcc/lra-spills.c
> @@ -276,7 +276,10 @@ assign_spill_hard_regs (int *pseudo_regnos, int n)
> for (k = 0; k < spill_class_size; k++)
> {
> hard_regno = ira_class_hard_regs[spill_class][k];
> - if (! overlaps_hard_reg_set_p (conflict_hard_regs, mode,
> hard_regno))
> + if (!
> ira_prohibited_class_mode_regs[spill_class][PSEUDO_REGNO_MODE (regno)]
> + && ! overlaps_hard_reg_set_p (conflict_hard_regs, mode,
> + hard_regno))
> break;
> }
> if (k >= spill_class_size)
> ...
>
Kwok has pointed out that in fact ira_prohibited_class_mode_regs is a
HARD_REG_SET which needs to be tested using TEST_HARD_REG_BIT.
