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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/101953] bug on the default cast operator from double to unsigned short Date: Wed, 18 Aug 2021 01:41:51 +0000 [thread overview] Message-ID: <bug-101953-4-n2sOlnT9gw@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-101953-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101953 --- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> --- MIPS64 does: trunc.w.d $f0,$f0 ; int c.le.d $fcc0,$f1,$f0 bc1t $fcc0,.L2 nop trunc.w.d $f0,$f0 mfc1 $2,$f0 b .L3 nop .L2: sub.d $f0,$f0,$f1 li $3,-2147483648 # 0xffffffff80000000 trunc.w.d $f0,$f0 mfc1 $2,$f0 or $2,$2,$3 .L3: ; unsigned So MIPS64 does a comparison to see if the float is greater than INT_MAX and then does a subtraction and then conversion and then adds back INT_MAX.
next prev parent reply other threads:[~2021-08-18 1:41 UTC|newest] Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-17 22:19 [Bug c/101953] New: " mlwmohawk at gmail dot com 2021-08-17 22:19 ` [Bug c/101953] " mlwmohawk at gmail dot com 2021-08-17 22:51 ` schwab@linux-m68k.org 2021-08-18 0:32 ` mlwmohawk at gmail dot com 2021-08-18 0:40 ` pinskia at gcc dot gnu.org 2021-08-18 0:41 ` pinskia at gcc dot gnu.org 2021-08-18 1:11 ` mlwmohawk at gmail dot com 2021-08-18 1:12 ` mlwmohawk at gmail dot com 2021-08-18 1:22 ` pinskia at gcc dot gnu.org 2021-08-18 1:23 ` pinskia at gcc dot gnu.org 2021-08-18 1:26 ` pinskia at gcc dot gnu.org 2021-08-18 1:26 ` pinskia at gcc dot gnu.org 2021-08-18 1:32 ` pinskia at gcc dot gnu.org 2021-08-18 1:36 ` pinskia at gcc dot gnu.org 2021-08-18 1:41 ` pinskia at gcc dot gnu.org [this message] 2021-08-18 3:01 ` mlwmohawk at gmail dot com 2021-08-18 3:03 ` pinskia at gcc dot gnu.org 2021-08-18 3:05 ` pinskia at gcc dot gnu.org 2021-08-18 3:21 ` mlwmohawk at gmail dot com 2021-08-18 3:37 ` mlwmohawk at gmail dot com 2021-08-18 3:59 ` pinskia at gcc dot gnu.org 2021-08-18 6:02 ` pinskia at gcc dot gnu.org 2021-08-18 12:26 ` harald at gigawatt dot nl 2021-08-18 15:23 ` msebor at gcc dot gnu.org 2021-08-18 15:34 ` mlwmohawk at gmail dot com 2021-08-18 20:44 ` joseph at codesourcery dot com 2021-08-18 21:59 ` mlwmohawk at gmail dot com 2021-08-18 22:05 ` harald at gigawatt dot nl 2021-08-18 22:12 ` jakub at gcc dot gnu.org
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