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| author | Tom de Vries <tom@codesourcery.com> | 2014-05-30 08:43:05 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2014-05-30 08:43:05 +0000 |
| commit | 10e1bdb2723bfd322516ebf76432b6f927a478e2 (patch) | |
| tree | bf5a31454d3701aa688b9681b11ee36cdfa0438f /gcc/lra-constraints.c | |
| parent | 569120372d8b1c3cd1e0b867c686e250872f760e (diff) | |
| download | gcc-10e1bdb2723bfd322516ebf76432b6f927a478e2.zip gcc-10e1bdb2723bfd322516ebf76432b6f927a478e2.tar.gz gcc-10e1bdb2723bfd322516ebf76432b6f927a478e2.tar.bz2 | |
-fuse-caller-save - Support in lra
2014-05-30 Tom de Vries <tom@codesourcery.com>
* lra-int.h (struct lra_reg): Add field actual_call_used_reg_set.
* lra.c (initialize_lra_reg_info_element): Add init of
actual_call_used_reg_set field.
(lra): Call lra_create_live_ranges before lra_inheritance for
-fuse-caller-save.
* lra-assigns.c (lra_assign): Allow call_used_regs to cross calls for
-fuse-caller-save.
* lra-constraints.c (need_for_call_save_p): Use actual_call_used_reg_set
instead of call_used_reg_set for -fuse-caller-save.
* lra-lives.c (process_bb_lives): Calculate actual_call_used_reg_set.
From-SVN: r211074
Diffstat (limited to 'gcc/lra-constraints.c')
| -rw-r--r-- | gcc/lra-constraints.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index 69ffdcd..147f121 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -4622,7 +4622,10 @@ need_for_call_save_p (int regno) lra_assert (regno >= FIRST_PSEUDO_REGISTER && reg_renumber[regno] >= 0); return (usage_insns[regno].calls_num < calls_num && (overlaps_hard_reg_set_p - (call_used_reg_set, + ((flag_use_caller_save && + ! hard_reg_set_empty_p (lra_reg_info[regno].actual_call_used_reg_set)) + ? lra_reg_info[regno].actual_call_used_reg_set + : call_used_reg_set, PSEUDO_REGNO_MODE (regno), reg_renumber[regno]) || HARD_REGNO_CALL_PART_CLOBBERED (reg_renumber[regno], PSEUDO_REGNO_MODE (regno)))); |