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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/61872] Assigning to "long double" causes memset to be improperly elided Date: Wed, 23 Jul 2014 12:38:00 -0000 [thread overview] Message-ID: <bug-61872-4-VsD75mKDVF@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-61872-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61872 --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- Old value = 12 '\f' New value = 16 '\020' init_adjust_machine_modes () at insn-modes.c:1069 1066 /* config/i386/i386-modes.def:34 */ 1067 s = TARGET_128BIT_LONG_DOUBLE ? 16 : 12; 1068 mode_size[XFmode] = s; 1069 mode_base_align[XFmode] = s & (~s + 1); /* In ILP32 mode, XFmode has size 12 and alignment 4. In LP64 mode, XFmode has size and alignment 16. */ ADJUST_FLOAT_FORMAT (XF, (TARGET_128BIT_LONG_DOUBLE ? &ieee_extended_intel_128_format : TARGET_96_ROUND_53_LONG_DOUBLE ? &ieee_extended_intel_96_round_53_format : &ieee_extended_intel_96_format)); ok, but with that you need to adjust the insns to actually store 16bits. Target bug.
next prev parent reply other threads:[~2014-07-23 12:38 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-61872-4@http.gcc.gnu.org/bugzilla/> 2014-07-23 12:23 ` [Bug c++/61872] " rguenth at gcc dot gnu.org 2014-07-23 12:38 ` rguenth at gcc dot gnu.org [this message] 2020-03-15 22:03 ` [Bug target/61872] " ch3root at openwall dot com 2020-03-20 14:25 ` rguenth at gcc dot gnu.org
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