diff options
| author | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-09 15:39:53 +0000 |
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| committer | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-07-09 15:39:53 +0000 |
| commit | 853a01d6a12b1772a57775b64e7ee06bc02678ef (patch) | |
| tree | 29d233e4e61f3cd1493734ba7208f952708bef72 /gcc/lra-lives.c | |
| parent | 75c3f230cd53f464ed35a069842447d577167969 (diff) | |
| download | gcc-853a01d6a12b1772a57775b64e7ee06bc02678ef.tar.gz | |
2015-07-09 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/66782
* lra-int.h (struct lra_insn_recog_data): Add comment about
clobbered hard regs for arg_hard_regs.
* lra.c (lra_set_insn_recog_data): Add clobbered hard regs.
* lra-lives.c (process_bb_lives): Process clobbered hard regs.
Add condition for processing used hard regs.
* lra-constraints.c (update_ebb_live_info, inherit_in_ebb):
Process clobbered hard regs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@225618 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/lra-lives.c')
| -rw-r--r-- | gcc/lra-lives.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c index edf4a91028e..78f16531559 100644 --- a/gcc/lra-lives.c +++ b/gcc/lra-lives.c @@ -814,6 +814,12 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p) if (reg->type != OP_IN) make_hard_regno_born (reg->regno, false); + if (curr_id->arg_hard_regs != NULL) + for (i = 0; (regno = curr_id->arg_hard_regs[i]) >= 0; i++) + if (regno >= FIRST_PSEUDO_REGISTER) + /* It is a clobber. */ + make_hard_regno_born (regno - FIRST_PSEUDO_REGISTER, false); + sparseset_copy (unused_set, start_living); sparseset_clear (start_dying); @@ -829,6 +835,12 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p) if (reg->type == OP_OUT && ! reg->early_clobber && ! reg->subreg_p) make_hard_regno_dead (reg->regno); + if (curr_id->arg_hard_regs != NULL) + for (i = 0; (regno = curr_id->arg_hard_regs[i]) >= 0; i++) + if (regno >= FIRST_PSEUDO_REGISTER) + /* It is a clobber. */ + make_hard_regno_dead (regno - FIRST_PSEUDO_REGISTER); + if (call_p) { if (flag_ipa_ra) @@ -877,7 +889,8 @@ process_bb_lives (basic_block bb, int &curr_point, bool dead_insn_p) /* Make argument hard registers live. Don't create conflict of used REAL_PIC_OFFSET_TABLE_REGNUM and the pic pseudo. */ for (i = 0; (regno = curr_id->arg_hard_regs[i]) >= 0; i++) - make_hard_regno_born (regno, true); + if (regno < FIRST_PSEUDO_REGISTER) + make_hard_regno_born (regno, true); sparseset_and_compl (dead_set, start_living, start_dying); |