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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-lives.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-lives.c')
| -rw-r--r-- | gcc/lra-lives.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c index 8444ade..d007215 100644 --- a/gcc/lra-lives.c +++ b/gcc/lra-lives.c @@ -624,6 +624,17 @@ process_bb_lives (basic_block bb, int &curr_point) if (call_p) { + if (flag_use_caller_save) + { + HARD_REG_SET this_call_used_reg_set; + get_call_reg_set_usage (curr_insn, &this_call_used_reg_set, + call_used_reg_set); + + EXECUTE_IF_SET_IN_SPARSESET (pseudos_live, j) + IOR_HARD_REG_SET (lra_reg_info[j].actual_call_used_reg_set, + this_call_used_reg_set); + } + sparseset_ior (pseudos_live_through_calls, pseudos_live_through_calls, pseudos_live); if (cfun->has_nonlocal_label |