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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/70164] [8/9/10 Regression] Code/performance regression due to poor register allocation on Cortex-M0 Date: Fri, 10 Apr 2020 10:57:40 +0000 [thread overview] Message-ID: <bug-70164-4-UB7ol6jLJ3@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-70164-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70164 Christophe Lyon <clyon at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |clyon at gcc dot gnu.org --- Comment #24 from Christophe Lyon <clyon at gcc dot gnu.org> --- With today's trunk, I still see the same problem: history_expand_line_internal: @ args = 0, pretend = 0, frame = 8 @ frame_needed = 0, uses_anonymous_args = 0 push {r0, r1, r2, r4, r5, r6, r7, lr} ldr r3, .L3 ldr r6, .L3+4 ldr r7, [r3] ldr r3, [r6] ; ; <--- load of 'hist_verify' onto r3 movs r5, r0 str r3, [sp, #4] ; <--- Spill movs r3, #0 str r3, [r6] bl pre_process_line ldr r3, [sp, #4] ; <--- reload movs r4, r0 adds r7, r7, r3 str r7, [r6] cmp r5, r0 bne .L1 bl str_len adds r0, r0, #1 bl x_malloc movs r1, r4 bl str_cpy movs r4, r0 .L1: @ sp needed movs r0, r4 pop {r1, r2, r3, r4, r5, r6, r7, pc} .L4: .align 2 .L3: .word a1 .word hist_verify
next parent reply other threads:[~2020-04-10 10:57 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-70164-4@http.gcc.gnu.org/bugzilla/> 2020-04-10 10:57 ` clyon at gcc dot gnu.org [this message] 2020-04-21 15:20 ` vmakarov at gcc dot gnu.org 2020-04-21 16:14 ` clyon at gcc dot gnu.org 2020-04-21 19:03 ` vmakarov at gcc dot gnu.org 2021-05-14 9:48 ` [Bug rtl-optimization/70164] [9/10/11/12 " jakub at gcc dot gnu.org 2021-06-01 8:07 ` rguenth at gcc dot gnu.org 2022-05-27 9:36 ` [Bug rtl-optimization/70164] [10/11/12/13 " rguenth at gcc dot gnu.org 2022-06-28 10:32 ` jakub at gcc dot gnu.org 2023-07-07 10:31 ` [Bug rtl-optimization/70164] [11/12/13/14 " rguenth at gcc dot gnu.org
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