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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/112740] [14 Regression] wrong code with vector compare on riscv64 at -O0 Date: Thu, 30 Nov 2023 21:57:08 +0000 [thread overview] Message-ID: <bug-112740-4-MV2TusXA8m@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-112740-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112740 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|target |middle-end --- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Oh it is not the ~ but rather `_3 = {_16};` which produces the wrong code: // <signed-boolean:128> _16; // vector(1) <signed-boolean:128> _3; ;; _3 = {_16}; (insn 36 35 37 (set (reg:TI 114) (reg:TI 102 [ _16 ])) "/app/example.cpp":15:6 -1 (nil)) (insn 37 36 38 (set (subreg:DI (reg:TI 113) 0) (and:DI (subreg:DI (reg:TI 114) 0) (const_int 1 [0x1]))) "/app/example.cpp":15:6 -1 (nil)) (insn 38 37 39 (set (reg:DI 115) (const_int 0 [0])) "/app/example.cpp":15:6 -1 (nil)) (insn 39 38 40 (set (subreg:DI (reg:TI 113) 8) (and:DI (subreg:DI (reg:TI 114) 8) (reg:DI 115))) "/app/example.cpp":15:6 -1 (nil)) (insn 40 39 0 (set (reg:TI 94 [ _3 ]) (reg:TI 113)) "/app/example.cpp":15:6 -1 (nil)) That is wrong. that is producing 1 in _3 when it should have been -1 . That is it is doing `r94 = r102 & 0x1` which is totally wrong/broken ...
next prev parent reply other threads:[~2023-11-30 21:57 UTC|newest] Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-28 6:34 [Bug target/112740] New: " zsojka at seznam dot cz 2023-11-28 7:07 ` [Bug target/112740] " pinskia at gcc dot gnu.org 2023-11-30 0:23 ` pinskia at gcc dot gnu.org 2023-11-30 8:17 ` zsojka at seznam dot cz 2023-11-30 8:20 ` pinskia at gcc dot gnu.org 2023-11-30 18:47 ` pinskia at gcc dot gnu.org 2023-11-30 21:50 ` pinskia at gcc dot gnu.org 2023-11-30 21:57 ` pinskia at gcc dot gnu.org [this message] 2023-11-30 22:02 ` [Bug middle-end/112740] " pinskia at gcc dot gnu.org 2023-11-30 22:15 ` pinskia at gcc dot gnu.org 2023-11-30 22:35 ` pinskia at gcc dot gnu.org 2023-12-01 11:46 ` rguenth at gcc dot gnu.org 2024-01-10 13:42 ` rguenth at gcc dot gnu.org 2024-01-10 13:56 ` rguenth at gcc dot gnu.org 2024-01-11 8:15 ` cvs-commit at gcc dot gnu.org 2024-01-11 8:15 ` rguenth at gcc dot gnu.org
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