diff options
| author | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-01-05 23:19:23 +0000 |
|---|---|---|
| committer | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-01-05 23:19:23 +0000 |
| commit | 476d094d7713bdd77be9c7863518b69342c7a4b4 (patch) | |
| tree | 8d81e917b2a1cc0618df0ec47f5dcced22b199dc /gcc/gcse.c | |
| parent | 37e6be124c7dc5274014a63bdd8eeeb6057e6c43 (diff) | |
| download | gcc-476d094d7713bdd77be9c7863518b69342c7a4b4.tar.gz | |
* combine.c (expand_compound_operation) <ZERO_EXTRACT>: Add
comment that we fall through after case.
(mark_used_regs_combine): Don't expect a SIGN_EXTRACT in a SET_DEST.
(distribute_links): Likewise.
* cse.c (cse_insn): Likewise.
* cselib.c (cselib_invalidate_mem): Likewise.
* df.c: Update comments at the top of the file.
(read_modify_subreg_p): Update comments here too.
(df_def_record_1): Don't expect a SIGN_EXTRACT in a SET_DEST.
* flow.c (mark_set_1): Likewise.
(mark_used_regs): Likewise.
* gcse.c (mems_conflict_for_gcse_p): Likewise.
(canon_list_insert): Likewise.
(mark_set): Likewise.
(try_replace_reg): Likewise.
(store_killed_in_insn): Likewise.
* loop.c (count_one_set): Likewise.
(basic_induction_var): Likewise.
* postreload-gcse.c (find_mem_conflicts): Likewise.
* postreload.c (reload_combine_note_store): Likewise.
(move2add_note_store): Likewise.
* reload.c (find_equiv_reg): Likewise.
(mark_referenced_resources): Likewise.
* rtlanal.c (set_noop_p): Likewise.
(note_stores): Likewise.
(note_uses): Likewise.
* sched-deps.c (sched_analyze_1): Likewise.
* sched-rgn.c (check_live_1): Likewise.
(update_live_1): Likewise.
* config/i860/i860.c: Likewise.
* rtl.dec (SIGN_EXTRACT): Document that this cannot appear as
an lvalue.
(ZERO_EXTRACT): Mention that this one can be an lvalue.
* doc/rtl.texi: Update documentation for bit-fields and SET.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@92974 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gcse.c')
| -rw-r--r-- | gcc/gcse.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/gcc/gcse.c b/gcc/gcse.c index 47d3fae5730..67f8053e9c8 100644 --- a/gcc/gcse.c +++ b/gcc/gcse.c @@ -1366,7 +1366,6 @@ mems_conflict_for_gcse_p (rtx dest, rtx setter ATTRIBUTE_UNUSED, { while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == ZERO_EXTRACT - || GET_CODE (dest) == SIGN_EXTRACT || GET_CODE (dest) == STRICT_LOW_PART) dest = XEXP (dest, 0); @@ -2002,7 +2001,6 @@ canon_list_insert (rtx dest ATTRIBUTE_UNUSED, rtx unused1 ATTRIBUTE_UNUSED, while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == ZERO_EXTRACT - || GET_CODE (dest) == SIGN_EXTRACT || GET_CODE (dest) == STRICT_LOW_PART) dest = XEXP (dest, 0); @@ -2390,7 +2388,6 @@ mark_set (rtx pat, rtx insn) while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == ZERO_EXTRACT - || GET_CODE (dest) == SIGN_EXTRACT || GET_CODE (dest) == STRICT_LOW_PART) dest = XEXP (dest, 0); @@ -2739,8 +2736,7 @@ try_replace_reg (rtx from, rtx to, rtx insn) have a note, and have no special SET, add a REG_EQUAL note to not lose information. */ if (!success && note == 0 && set != 0 - && GET_CODE (XEXP (set, 0)) != ZERO_EXTRACT - && GET_CODE (XEXP (set, 0)) != SIGN_EXTRACT) + && GET_CODE (SET_DEST (set)) != ZERO_EXTRACT) note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src)); } @@ -5960,8 +5956,7 @@ store_killed_in_insn (rtx x, rtx x_regs, rtx insn, int after) rtx pat = PATTERN (insn); rtx dest = SET_DEST (pat); - if (GET_CODE (dest) == SIGN_EXTRACT - || GET_CODE (dest) == ZERO_EXTRACT) + if (GET_CODE (dest) == ZERO_EXTRACT) dest = XEXP (dest, 0); /* Check for memory stores to aliased objects. */ |