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| author | Tom de Vries <tom@codesourcery.com> | 2014-05-28 09:43:52 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2014-05-28 09:43:52 +0000 |
| commit | b8c6a45ab7a0a6c8c7a6315f255312b32b5a8403 (patch) | |
| tree | 693caa7eb8b98cbb78ccdeb56f79134e22d8d581 /gcc/lra-constraints.c | |
| parent | dbe7d9e3ffd9c5cdb879dd705ed86da5972773ac (diff) | |
| download | gcc-b8c6a45ab7a0a6c8c7a6315f255312b32b5a8403.zip gcc-b8c6a45ab7a0a6c8c7a6315f255312b32b5a8403.tar.gz gcc-b8c6a45ab7a0a6c8c7a6315f255312b32b5a8403.tar.bz2 | |
-fuse-caller-save - Support in lra
2014-05-28 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: r211010
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 2df841a..7eb9dbc 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -4605,7 +4605,10 @@ 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)))); |