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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug debug/106746] [13 Regression] '-fcompare-debug' failure (length) with -O2 -fsched2-use-superblocks since r13-2041-g6624ad73064de241 Date: Thu, 01 Dec 2022 11:48:05 +0000 [thread overview] Message-ID: <bug-106746-4-KfdEGxsGLH@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-106746-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106746 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org, | |vmakarov at gcc dot gnu.org --- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I doubt the trigger is exactly CONCAT/CONCATN, I don't see those mentioned anywhere in the scheduler nor in i386 backend code related to scheduling. But the DEBUG_INSN with CONCATN in this case contains 16 MEMs, perhaps something defers some insns for later if that DEBUG_INSN is scheduled. Not very familiar with the scheduling dumps though. With: ./xgcc -B ./ -S -O2 -fsched2-use-superblocks -fcompare-debug pr106746.c -Wno-psabi --param min-nondebug-insn-uid=10000 -fdump-tree-all -da -fsched-verbose=8 I see that it is tick 24 in which insn 10148 is scheduled with -g0 and not otherwise, already in tick 21 it is: ;; 21--> 10090 xmm7=[dx*0x4+sp+0x8] :hsw_decodern,hsw_p23 +;; dependencies resolved: insn 10148 +;; tick updated: insn 10148 into ready ;; dependencies resolved: insn 10203 ;; tick updated: insn 10203 into ready ;; dependencies resolved: insn 10202 ;; tick updated: insn 10202 into ready ;; dependencies resolved: insn 10201 ;; tick updated: insn 10201 into ready But why, I'm not sure.
next prev parent reply other threads:[~2022-12-01 11:48 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-26 5:41 [Bug debug/106746] New: [13 Regression] '-fcompare-debug' failure (length) with -O2 -fsched2-use-superblocks zsojka at seznam dot cz 2022-08-26 6:20 ` [Bug debug/106746] " rguenth at gcc dot gnu.org 2022-08-26 12:42 ` [Bug debug/106746] [13 Regression] '-fcompare-debug' failure (length) with -O2 -fsched2-use-superblocks since r13-2041-g6624ad73064de241 marxin at gcc dot gnu.org 2022-08-27 2:33 ` hjl.tools at gmail dot com 2022-08-30 15:48 ` hjl.tools at gmail dot com 2022-09-01 0:06 ` hjl.tools at gmail dot com 2022-09-01 14:52 ` hjl.tools at gmail dot com 2022-09-01 17:01 ` hjl.tools at gmail dot com 2022-09-01 23:55 ` hjl.tools at gmail dot com 2022-09-02 17:05 ` roger at nextmovesoftware dot com 2022-09-02 17:09 ` hjl.tools at gmail dot com 2022-10-19 7:06 ` rguenth at gcc dot gnu.org 2022-12-01 11:48 ` jakub at gcc dot gnu.org [this message] 2022-12-01 12:02 ` jakub at gcc dot gnu.org 2022-12-01 14:35 ` segher at gcc dot gnu.org 2022-12-01 14:42 ` jakub at gcc dot gnu.org 2022-12-01 15:07 ` segher at gcc dot gnu.org 2023-01-14 5:39 ` aoliva at gcc dot gnu.org 2023-01-14 8:29 ` aoliva at gcc dot gnu.org 2023-01-14 8:59 ` jakub at gcc dot gnu.org 2023-01-19 4:12 ` cvs-commit at gcc dot gnu.org 2023-01-19 4:18 ` aoliva at gcc dot gnu.org 2023-01-19 10:56 ` segher at gcc dot gnu.org 2023-01-20 18:42 ` jsm28 at gcc dot gnu.org 2023-01-30 17:49 ` jakub at gcc dot gnu.org 2023-01-30 17:58 ` segher at gcc dot gnu.org 2023-01-30 18:01 ` jakub at gcc dot gnu.org 2023-01-30 18:01 ` jakub at gcc dot gnu.org 2023-02-02 12:56 ` cvs-commit at gcc dot gnu.org 2023-02-02 12:57 ` jakub at gcc dot gnu.org
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