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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/62173] [AArch64] Performance regression due to r213488 Date: Mon, 18 Aug 2014 16:39:00 -0000 [thread overview] Message-ID: <bug-62173-4-kSTDwHGjhT@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-62173-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62173 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2014-08-18 Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed, Here is a much shorter testcase and not related to loops either: void bar(int i) { char A[10]; g(A); f(A[i]); } --- CUT --- Before: bar: stp x29, x30, [sp, -64]! add x29, sp, 0 stp x19, x20, [sp, 16] add x19, x29, 48 mov w20, w0 mov x0, x19 bl g ldrb w0, [x19, w20, sxtw] bl f ldp x19, x20, [sp, 16] ldp x29, x30, [sp], 64 ret After: bar: stp x29, x30, [sp, -48]! add x29, sp, 0 str x19, [sp, 16] mov w19, w0 add x0, x29, 32 bl g add x0, x29, 48 add x19, x0, x19, sxtw ldrb w0, [x19, -16] bl f ldr x19, [sp, 16] ldp x29, x30, [sp], 48 ret
next prev parent reply other threads:[~2014-08-18 16:39 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-08-18 16:12 [Bug target/62173] New: " spop at gcc dot gnu.org 2014-08-18 16:39 ` pinskia at gcc dot gnu.org [this message] 2014-08-18 19:13 ` [Bug target/62173] " spop at gcc dot gnu.org 2014-08-19 1:37 ` amker at gcc dot gnu.org 2014-10-28 11:28 ` [Bug target/62173] [5.0 regression] " jiwang at gcc dot gnu.org 2014-11-14 9:37 ` jiwang at gcc dot gnu.org 2014-11-17 2:14 ` amker.cheng at gmail dot com 2014-11-24 12:15 ` jiwang at gcc dot gnu.org 2014-11-24 12:38 ` jiwang at gcc dot gnu.org 2014-11-24 13:06 ` rguenth at gcc dot gnu.org 2014-11-24 23:01 ` jiwang at gcc dot gnu.org 2014-11-26 10:54 ` [Bug target/62173] [5.0 regression] [AArch64] Can't ivopt array base address while ARM can jiwang at gcc dot gnu.org 2014-11-27 9:35 ` jiwang at gcc dot gnu.org 2014-11-27 12:00 ` [Bug tree-optimization/62173] [5.0 regression] 64bit Arch can't ivopt while 32bit Arch can rguenther at suse dot de 2014-11-27 12:16 ` rguenther at suse dot de 2014-11-27 13:34 ` jiwang at gcc dot gnu.org 2015-01-23 17:33 ` jiwang at gcc dot gnu.org 2015-01-26 10:30 ` rguenth at gcc dot gnu.org 2015-01-26 11:10 ` rguenth at gcc dot gnu.org 2015-01-26 13:48 ` ramana at gcc dot gnu.org 2015-01-26 14:19 ` amker at gcc dot gnu.org 2015-01-26 14:51 ` rguenther at suse dot de 2015-01-26 14:53 ` rguenther at suse dot de 2015-01-26 15:03 ` amker at gcc dot gnu.org 2015-01-26 15:38 ` jiwang at gcc dot gnu.org 2015-01-27 3:21 ` amker at gcc dot gnu.org 2015-01-27 7:56 ` amker at gcc dot gnu.org 2015-01-27 9:11 ` rguenther at suse dot de 2015-01-28 18:26 ` LpSolit at netscape dot net 2015-01-29 6:48 ` amker at gcc dot gnu.org 2015-01-30 6:42 ` amker at gcc dot gnu.org 2015-01-30 12:32 ` rguenth at gcc dot gnu.org 2015-02-05 7:27 ` amker at gcc dot gnu.org 2015-03-11 17:30 ` [Bug tree-optimization/62173] [5 Regression] " jiwang at gcc dot gnu.org 2015-03-11 17:46 ` jiwang at gcc dot gnu.org 2015-03-11 17:52 ` [Bug tree-optimization/62173] [5/6 " jakub at gcc dot gnu.org 2015-03-13 8:34 ` amker at gcc dot gnu.org 2015-06-02 3:34 ` amker at gcc dot gnu.org 2015-06-03 3:56 ` amker at gcc dot gnu.org 2015-07-22 11:44 ` jiwang at gcc dot gnu.org
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