diff options
| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-09-10 18:56:31 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-09-10 18:56:31 +0000 |
| commit | 026116ce2a4dedad81518b0ca89dd8243b545778 (patch) | |
| tree | 28a5af82fb797ac35103431c00f3c8fbcd0dc2f8 /gcc/hard-reg-set.h | |
| parent | df1f0eef67939274e9ddd3df426e8dfc5184086b (diff) | |
Remove no_caller_save_reg_set
Reusing the reasoning from the call_fixed_reg_set patch:
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
for (j = 1; j <= MOVE_MAX_WORDS; j++)
if (reg_save_code (i,regno_save_mode[i][j]) == -1)
should be true whenever regno_save_mode[i][j] == VOIDmode,
which it is for:
~call_used_reg_set | ~have_save_mode
So this condition amounts to:
~call_used_reg_set | ~have_save_mode | ~have_save_insn
== ~call_used_reg_set | ~savable_regs
no_caller_save_reg_set is then set if call_used_regs[i], so
no_caller_save_reg_set is:
call_used_reg_set & (~call_used_reg_set | ~savable_regs)
== call_used_reg_set & ~savable_regs
This patch expands its single user accordingly.
Note that ~savable_regs is always empty on LRA targets.
2019-09-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* hard-reg-set.h (target_hard_regs::x_no_caller_save_reg_set): Delete.
(no_caller_save_reg_set): Delete.
* caller-save.c (init_caller_save): Don't initialize it.
* ira-conflicts.c (ira_build_conflicts): Calculate
no_caller_save_reg_set locally from call_used_reg_set and savable_regs.
From-SVN: r275599
Diffstat (limited to 'gcc/hard-reg-set.h')
| -rw-r--r-- | gcc/hard-reg-set.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/gcc/hard-reg-set.h b/gcc/hard-reg-set.h index 4c8da3a7ac8..945e4996664 100644 --- a/gcc/hard-reg-set.h +++ b/gcc/hard-reg-set.h @@ -424,10 +424,6 @@ struct target_hard_regs { with the local stack frame are safe, but scant others. */ HARD_REG_SET x_regs_invalidated_by_call; - /* Call used hard registers which cannot be saved because there is no - insn for this. */ - HARD_REG_SET x_no_caller_save_reg_set; - /* Table of register numbers in the order in which to try to use them. */ int x_reg_alloc_order[FIRST_PSEUDO_REGISTER]; @@ -490,8 +486,6 @@ extern struct target_hard_regs *this_target_hard_regs; (this_target_hard_regs->x_savable_regs) #define regs_invalidated_by_call \ (this_target_hard_regs->x_regs_invalidated_by_call) -#define no_caller_save_reg_set \ - (this_target_hard_regs->x_no_caller_save_reg_set) #define reg_alloc_order \ (this_target_hard_regs->x_reg_alloc_order) #define inv_reg_alloc_order \ |