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* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <bug-9663-5434@http.gcc.gnu.org/bugzilla/> @ 2009-02-08 5:17 ` ramana dot r at gmail dot com 2009-03-13 9:38 ` rearnsha at gcc dot gnu dot org 1 sibling, 0 replies; 8+ messages in thread From: ramana dot r at gmail dot com @ 2009-02-08 5:17 UTC (permalink / raw) To: gcc-bugs ------- Comment #8 from ramana dot r at gmail dot com 2009-02-08 05:17 ------- (In reply to comment #7) > Note you have to do with -fno-inline now on the mainline as the function is > inlined at -O2. > It looks as though this is fixed in 4.3 and mainline today. I checked with 4.1 and saw that the problem existed in 4.1 Looking at the assembly generated for the function, I no longer see a cmp and mov as reported in the bug report. I see similar code generated in 4.1 but no longer in 4.3 or 4.4. I see subs generated for 4.3 and 4.4 in the loop kernel as of version r143940 for 4.3 and 144002 for mainline. Here is the snippet of code from 4.1, 4.3 and 4.4 as given below. 4.1 .L8: ldr r3, .L12 umull r1, r2, r3, ip mov r2, r2, lsr #3 mov r3, r2, asl #1 mov r1, r2, asl #3 add r3, r3, r1 rsb r3, r3, ip add r3, r3, #48 cmp r2, #0 ---- Insns from original bug report. mov ip, r2 ---- strb r3, [r0, #-1]! bne .L8 4.3 .L5: umull r2, r3, r5, ip mov r3, r3, lsr #3 mov r2, r3, asl #1 mov r1, r3, asl #3 add r2, r2, r1 rsb r2, r2, ip add r2, r2, #48 subs ip, r3, #0 strb r2, [r0, #-1]! bne .L5 4.4 .L5: umull r1, r2, r4, ip mov r2, r2, lsr #3 add r1, r2, r2, asl #2 sub ip, ip, r1, asl #1 add r1, ip, #48 subs ip, r2, #0 strb r1, [r0, #-1]! bne .L5 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <bug-9663-5434@http.gcc.gnu.org/bugzilla/> 2009-02-08 5:17 ` [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity ramana dot r at gmail dot com @ 2009-03-13 9:38 ` rearnsha at gcc dot gnu dot org 1 sibling, 0 replies; 8+ messages in thread From: rearnsha at gcc dot gnu dot org @ 2009-03-13 9:38 UTC (permalink / raw) To: gcc-bugs ------- Comment #9 from rearnsha at gcc dot gnu dot org 2009-03-13 09:38 ------- Now believed fixed. -- rearnsha at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 ^ permalink raw reply [flat|nested] 8+ messages in thread
[parent not found: <20030211170600.9663.gertom@rgai.hu>]
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> @ 2003-05-26 20:59 ` dhazeghi@yahoo.com 2003-05-26 21:02 ` pinskia@physics.uc.edu ` (4 subsequent siblings) 5 siblings, 0 replies; 8+ messages in thread From: dhazeghi@yahoo.com @ 2003-05-26 20:59 UTC (permalink / raw) To: gcc-bugs PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 ------- Additional Comments From dhazeghi@yahoo.com 2003-05-26 20:55 ------- Hello, this problem is still present on gcc 3.3 branch and mainline (20030509). Could you resend the patch to gcc-patches, and cc: one of the arm-maintainers? Also, can you attach the patch to this PR, so it doesn't get lost? Thanks, Dara ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> 2003-05-26 20:59 ` dhazeghi@yahoo.com @ 2003-05-26 21:02 ` pinskia@physics.uc.edu 2003-06-02 5:30 ` dhazeghi@yahoo.com ` (3 subsequent siblings) 5 siblings, 0 replies; 8+ messages in thread From: pinskia@physics.uc.edu @ 2003-05-26 21:02 UTC (permalink / raw) To: gcc-bugs PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 pinskia@physics.uc.edu changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING ------- Additional Comments From pinskia@physics.uc.edu 2003-05-26 20:57 ------- See Dara's question. ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> 2003-05-26 20:59 ` dhazeghi@yahoo.com 2003-05-26 21:02 ` pinskia@physics.uc.edu @ 2003-06-02 5:30 ` dhazeghi@yahoo.com 2003-10-01 4:59 ` pinskia at gcc dot gnu dot org ` (2 subsequent siblings) 5 siblings, 0 replies; 8+ messages in thread From: dhazeghi@yahoo.com @ 2003-06-02 5:30 UTC (permalink / raw) To: gcc-bugs PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 dhazeghi@yahoo.com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |NEW Ever Confirmed| |1 GCC build triplet| |i686-pc-linux-gnu GCC host triplet| |i686-pc-linux-gnu GCC target triplet| |arm-elf Last reconfirmed|0000-00-00 00:00:00 |2003-06-02 05:30:23 date| | ------- Additional Comments From dhazeghi@yahoo.com 2003-06-02 05:30 ------- Shouldn't be in waiting. Confirmed. ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> ` (2 preceding siblings ...) 2003-06-02 5:30 ` dhazeghi@yahoo.com @ 2003-10-01 4:59 ` pinskia at gcc dot gnu dot org 2003-12-10 0:12 ` dhazeghi at yahoo dot com 2004-05-22 5:25 ` pinskia at gcc dot gnu dot org 5 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu dot org @ 2003-10-01 4:59 UTC (permalink / raw) To: gcc-bugs PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |enhancement Last reconfirmed|2003-06-02 05:30:23 |2003-10-01 04:59:02 date| | ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> ` (3 preceding siblings ...) 2003-10-01 4:59 ` pinskia at gcc dot gnu dot org @ 2003-12-10 0:12 ` dhazeghi at yahoo dot com 2004-05-22 5:25 ` pinskia at gcc dot gnu dot org 5 siblings, 0 replies; 8+ messages in thread From: dhazeghi at yahoo dot com @ 2003-12-10 0:12 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From dhazeghi at yahoo dot com 2003-12-10 00:12 ------- Confirmed still not present on mainline. Richard, would you mind looking at the patch included here? Thanks. -- What |Removed |Added ---------------------------------------------------------------------------- CC| |rearnsha at arm dot com Keywords| |patch Last reconfirmed|2003-10-01 04:59:02 |2003-12-10 00:12:20 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity [not found] <20030211170600.9663.gertom@rgai.hu> ` (4 preceding siblings ...) 2003-12-10 0:12 ` dhazeghi at yahoo dot com @ 2004-05-22 5:25 ` pinskia at gcc dot gnu dot org 5 siblings, 0 replies; 8+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-05-22 5:25 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-21 03:54 ------- Note you have to do with -fno-inline now on the mainline as the function is inlined at -O2. -- What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed|2003-12-10 00:12:20 |2004-05-21 03:54:16 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9663 ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2009-03-13 9:38 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-9663-5434@http.gcc.gnu.org/bugzilla/>
2009-02-08 5:17 ` [Bug target/9663] [arm] gcc-20030127 misses an optimization opportunity ramana dot r at gmail dot com
2009-03-13 9:38 ` rearnsha at gcc dot gnu dot org
[not found] <20030211170600.9663.gertom@rgai.hu>
2003-05-26 20:59 ` dhazeghi@yahoo.com
2003-05-26 21:02 ` pinskia@physics.uc.edu
2003-06-02 5:30 ` dhazeghi@yahoo.com
2003-10-01 4:59 ` pinskia at gcc dot gnu dot org
2003-12-10 0:12 ` dhazeghi at yahoo dot com
2004-05-22 5:25 ` pinskia at gcc dot gnu dot org
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