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reorg.c (delete_computation): Comment fixes.

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* reorg.c (delete_computation): Comment fixes.
	* caller-save.c (setup_save_areas): Idem.
	* sel-sched-dump.c (dump_lv_set): Idem.
	* rtl.def: Idem.

From-SVN: r156759
This commit is contained in:
Steven Bosscher 2010-02-14 12:58:16 +00:00
parent 244e6c5c9f
commit 912eb5a4de
5 changed files with 13 additions and 9 deletions

7
gcc/ChangeLog

@ -1,3 +1,10 @@
2010-02-14 Steven Bosscher <steven@gcc.gnu.org>
* reorg.c (delete_computation): Comment fixes.
* caller-save.c (setup_save_areas): Idem.
* sel-sched-dump.c (dump_lv_set): Idem.
* rtl.def: Idem.
2010-02-14 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.c (s390_sched_init): New function.

2
gcc/caller-save.c

@ -549,7 +549,7 @@ setup_save_areas (void)
CLEAR_HARD_REG_SET (this_insn_sets);
note_stores (PATTERN (insn), mark_set_regs, &this_insn_sets);
/* Sibcalls are considered to set the return value,
compare flow.c:propagate_one_insn. */
compare df-scan.c:df_get_call_refs. */
if (SIBLING_CALL_P (insn) && crtl->return_rtx)
mark_set_regs (crtl->return_rtx, NULL_RTX, &this_insn_sets);

9
gcc/reorg.c

@ -3253,13 +3253,10 @@ delete_prior_computation (rtx note, rtx insn)
/* Delete INSN and recursively delete insns that compute values used only
by INSN. This uses the REG_DEAD notes computed during flow analysis.
If we are running before flow.c, we need do nothing since flow.c will
delete dead code. We also can't know if the registers being used are
dead or not at this point.
Otherwise, look at all our REG_DEAD notes. If a previous insn does
nothing other than set a register that dies in this insn, we can delete
that insn as well.
Look at all our REG_DEAD notes. If a previous insn does nothing other
than set a register that dies in this insn, we can delete that insn
as well.
On machines with CC0, if CC0 is used in this insn, we may be able to
delete the insn that set it. */

2
gcc/rtl.def

@ -486,7 +486,7 @@ DEF_RTL_EXPR(UMAX, "umax", "ee", RTX_COMM_ARITH)
because they can be understood from the machine-mode of the
containing MEM. These operations exist in only two cases:
1. pushes onto the stack.
2. created automatically by the life_analysis pass in flow.c. */
2. created automatically by the auto-inc-dec pass. */
DEF_RTL_EXPR(PRE_DEC, "pre_dec", "e", RTX_AUTOINC)
DEF_RTL_EXPR(PRE_INC, "pre_inc", "e", RTX_AUTOINC)
DEF_RTL_EXPR(POST_DEC, "post_dec", "e", RTX_AUTOINC)

2
gcc/sel-sched-dump.c

@ -391,7 +391,7 @@ dump_lv_set (regset lv)
{
sel_print ("{");
/* This code was adapted from flow.c: dump_regset (). */
/* This code was adapted from cfg.c: dump_regset (). */
if (lv == NULL)
sel_print ("nil");
else