[PATCH, SMS 2/3] Skip DEBUG_INSNs while recognizing doloop
Ayal Zaks
ZAKS@il.ibm.com
Wed May 11 08:24:00 GMT 2011
> OK for mainline?
Yes, this is pretty obvious. (You don't have to change to
prev_nondebug_insn btw).
Ayal.
From: Revital Eres <revital.eres@linaro.org>
To: Ayal Zaks/Haifa/IBM@IBMIL
Cc: gcc-patches@gcc.gnu.org, Patch Tracking <patches@linaro.org>
Date: 08/05/2011 07:37 AM
Subject: [PATCH, SMS 2/3] Skip DEBUG_INSNs while recognizing doloop
Hello,
The attached patch adds code to skip DEBUG_INSNs while recognizing
doloop pattern.
The patch was tested together with the rest of the patches in this series
and on top of the patch to support do-loop for ARM (not yet in mainline,
but approved http://gcc.gnu.org/ml/gcc-patches/2011-01/msg01718.html).
On ppc64-redhat-linux regtest as well as bootstrap with SMS flags
enabling SMS also on loops with stage count 1. Regtested on SPU.
On arm-linux-gnueabi regtseted on c,c++. Bootstrap c language with SMS
flags enabling SMS also on loops with stage count 1.
OK for mainline?
Thanks,
Revital
Changelog:
* modulo-sched.c (doloop_register_get): Ignore DEBUG_INSNs while
recognizing doloop.
Index: modulo-sched.c
===================================================================
--- modulo-sched.c (revision 173368)
+++ modulo-sched.c (working copy)
@@ -310,10 +313,10 @@ doloop_register_get (rtx head ATTRIBUTE_
either a single (parallel) branch-on-count or a (non-parallel)
branch immediately preceded by a single (decrement) insn. */
first_insn_not_to_check = (GET_CODE (PATTERN (tail)) == PARALLEL ? tail
- : PREV_INSN (tail));
+ : prev_nondebug_insn (tail));
for (insn = head; insn != first_insn_not_to_check; insn = NEXT_INSN
(insn))
- if (reg_mentioned_p (reg, insn))
+ if (reg_mentioned_p (reg, insn) && !DEBUG_INSN_P (insn))
{
if (dump_file)
{
More information about the Gcc-patches
mailing list