diff options
| author | Steven Bosscher <steven@gcc.gnu.org> | 2007-02-11 19:53:11 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2007-02-11 19:53:11 +0000 |
| commit | a31830a7cab48698868c117ba9100ec31069a91b (patch) | |
| tree | b8e43a1106916133f6889b90922be4c1b0c3b737 /gcc/alias.c | |
| parent | 4c38b6d9425a007d8e27511703f9660c48962e6e (diff) | |
| download | gcc-a31830a7cab48698868c117ba9100ec31069a91b.zip gcc-a31830a7cab48698868c117ba9100ec31069a91b.tar.gz gcc-a31830a7cab48698868c117ba9100ec31069a91b.tar.bz2 | |
fwprop.c (try_fwprop_subst): Use set_unique_reg_note to add the REG_EQ* note.
* fwprop.c (try_fwprop_subst): Use set_unique_reg_note
to add the REG_EQ* note.
* see.c (see_merge_one_use_extension): Likewise.
* local-alloc.c (update_equiv_regs): Likewise. Also don't
turn REG_EQUAL notes into REG_EQUIV notes if the target
register may have more than one set.
* function.c (assign_parm_setup_reg): Use set_unique_reg_note.
* gcse.c (try_replace_reg): Likewise.
* alias.c (init_alias_analysis): Use find_reg_equal_equiv_note.
* calls.c (fixup_tail_calls): Likewise. Abort if there is
more than one REG_EQUIV note.
* reload1.c (gen_reload): Use set_unique_reg_note.
From-SVN: r121821
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index 8b9254c..b873e97 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -2546,10 +2546,12 @@ init_alias_analysis (void) rtx src = SET_SRC (set); rtx t; - if (REG_NOTES (insn) != 0 - && (((note = find_reg_note (insn, REG_EQUAL, 0)) != 0 - && REG_N_SETS (regno) == 1) - || (note = find_reg_note (insn, REG_EQUIV, NULL_RTX)) != 0) + note = find_reg_equal_equiv_note (insn); + if (note && REG_NOTE_KIND (note) == REG_EQUAL + && REG_N_SETS (regno) != 1) + note = NULL_RTX; + + if (note != NULL_RTX && GET_CODE (XEXP (note, 0)) != EXPR_LIST && ! rtx_varies_p (XEXP (note, 0), 1) && ! reg_overlap_mentioned_p (SET_DEST (set), |