diff options
| author | Vladimir Makarov <vmakarov@redhat.com> | 2018-02-22 21:17:51 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2018-02-22 21:17:51 +0000 |
| commit | 7874b7c5b59923d8a56eaf41f7518c71b910355e (patch) | |
| tree | 7268aa9b5a8752e1ace59914f5238e43daa7a182 /gcc/lra-int.h | |
| parent | b613cc2e9120ea002f8a0855d2620ee4ba8fbfe5 (diff) | |
re PR target/81572 (gcc-7 regression: unnecessary vector regmove on compare)
2018-02-22 Vladimir Makarov <vmakarov@redhat.com>
PR target/81572
* lra-int.h (LRA_UNKNOWN_ALT, LRA_NON_CLOBBERED_ALT): New macros.
* lra.c (lra_set_insn_recog_data, lra_update_insn_recog_data): Use
LRA_UNKNOWN_ALT.
* lra-constraints.c (curr_insn_transform): Set up
LRA_NON_CLOBBERED_ALT for moves processed on the fast path. Use
LRA_UNKNOWN_ALT.
(remove_inheritance_pseudos): Use LRA_UNKNOWN_ALT.
* lra-eliminations.c (spill_pseudos): Ditto.
(process_insn_for_elimination): Ditto.
* lra-lives.c (reg_early_clobber_p): Use the new macros.
* lra-spills.c (spill_pseudos): Use LRA_UNKNOWN_ALT and
LRA_NON_CLOBBERED_ALT.
2018-02-22 Vladimir Makarov <vmakarov@redhat.com>
PR target/81572
* gcc.target/powerpc/pr81572.c: New.
From-SVN: r257915
Diffstat (limited to 'gcc/lra-int.h')
| -rw-r--r-- | gcc/lra-int.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/lra-int.h b/gcc/lra-int.h index 662bc4c14ed..03839187cf6 100644 --- a/gcc/lra-int.h +++ b/gcc/lra-int.h @@ -202,15 +202,20 @@ struct lra_static_insn_data const struct operand_alternative *operand_alternative; }; +/* Negative insn alternative numbers used for special cases. */ +#define LRA_UNKNOWN_ALT -1 +#define LRA_NON_CLOBBERED_ALT -2 + /* LRA internal info about an insn (LRA internal insn representation). */ struct lra_insn_recog_data { /* The insn code. */ int icode; - /* The alternative should be used for the insn, -1 if invalid, or we - should try to use any alternative, or the insn is a debug - insn. */ + /* The alternative should be used for the insn, LRA_UNKNOWN_ALT if + unknown, or we should assume any alternative, or the insn is a + debug insn. LRA_NON_CLOBBERED_ALT means ignoring any earlier + clobbers for the insn. */ int used_insn_alternative; /* SP offset before the insn relative to one at the func start. */ poly_int64 sp_offset; |