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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-assigns.c | |
| parent | 569120372d8b1c3cd1e0b867c686e250872f760e (diff) | |
| download | gcc-10e1bdb2723bfd322516ebf76432b6f927a478e2.tar.gz | |
-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-assigns.c')
| -rw-r--r-- | gcc/lra-assigns.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/gcc/lra-assigns.c b/gcc/lra-assigns.c index f7bb86b2160..03c2506d826 100644 --- a/gcc/lra-assigns.c +++ b/gcc/lra-assigns.c @@ -1460,12 +1460,13 @@ lra_assign (void) create_live_range_start_chains (); setup_live_pseudos_and_spill_after_risky_transforms (&all_spilled_pseudos); #ifdef ENABLE_CHECKING - for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++) - if (lra_reg_info[i].nrefs != 0 && reg_renumber[i] >= 0 - && lra_reg_info[i].call_p - && overlaps_hard_reg_set_p (call_used_reg_set, - PSEUDO_REGNO_MODE (i), reg_renumber[i])) - gcc_unreachable (); + if (!flag_use_caller_save) + for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++) + if (lra_reg_info[i].nrefs != 0 && reg_renumber[i] >= 0 + && lra_reg_info[i].call_p + && overlaps_hard_reg_set_p (call_used_reg_set, + PSEUDO_REGNO_MODE (i), reg_renumber[i])) + gcc_unreachable (); #endif /* Setup insns to process on the next constraint pass. */ bitmap_initialize (&changed_pseudo_bitmap, ®_obstack); |