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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/114134] [14 Regression] Extra mov instructions for simple function compared with GCC13 Date: Wed, 28 Feb 2024 04:01:14 +0000 [thread overview] Message-ID: <bug-114134-4-jO77YTntsu@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-114134-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114134 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Status|UNCONFIRMED |NEW Last reconfirmed| |2024-02-28 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Looks like the biggest issue is when expanding: ;; return D.26244; Before: (insn 34 33 35 (set (subreg:DI (reg:TI 107) 8) (reg:DI 108)) "/app/example.cpp":14:47 discrim 1 -1 (nil)) (insn 35 34 36 (set (reg:TI 98 [ <retval> ]) (reg:TI 107)) "/app/example.cpp":14:47 discrim 1 -1 (nil)) After: (insn 41 40 42 (set (reg:TI 130) (ior:TI (and:TI (reg:TI 130) (const_wide_int 0x0ffffffffffffffff)) (ashift:TI (zero_extend:TI (reg:DI 131)) (const_int 64 [0x40])))) "/app/example.cpp":14:47 discrim 1 -1 (nil)) (insn 42 41 43 (set (reg:TI 114 [ <retval> ]) (reg:TI 130)) "/app/example.cpp":14:47 discrim 1 -1 (nil))
next prev parent reply other threads:[~2024-02-28 4:01 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-27 16:02 [Bug c++/114134] New: " pilarlatiesa at gmail dot com 2024-02-28 3:55 ` [Bug target/114134] [14 Regression] " pinskia at gcc dot gnu.org 2024-02-28 4:01 ` pinskia at gcc dot gnu.org [this message] 2024-02-28 8:05 ` rguenth at gcc dot gnu.org 2024-02-28 9:44 ` pilarlatiesa at gmail dot com 2024-02-28 11:42 ` [Bug target/114134] [14 Regression] Extra mov instructions for simple function compared with GCC13 since r14-2386 jakub at gcc dot gnu.org 2024-02-28 12:13 ` pilarlatiesa at gmail dot com 2024-03-07 20:38 ` law at gcc dot gnu.org 2024-05-07 7:45 ` [Bug target/114134] [14/15 " rguenth at gcc dot gnu.org
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