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* [Bug target/71460] Copying structs can trap (on x86-32) due to SNaN to QNaN
[not found] <bug-71460-4@http.gcc.gnu.org/bugzilla/>
@ 2023-06-05 7:29 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: pinskia at gcc dot gnu.org @ 2023-06-05 7:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71460
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2021-08-22 00:00:00 |2023-6-5
--- Comment #29 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
;; y = x;
(insn 19 18 20 (set (reg:DF 91)
(mem/c:DF (plus:SI (reg/f:SI 77 virtual-stack-vars)
(const_int -8 [0xfffffffffffffff8])) [1 xD.3254+0 S8 A64]))
"/app/example.cpp":16:5 -1
(nil))
(insn 20 19 0 (set (mem/c:DF (plus:SI (reg/f:SI 77 virtual-stack-vars)
(const_int -16 [0xfffffffffffffff0])) [1 yD.3255+0 S8 A64])
(reg:DF 91)) "/app/example.cpp":16:5 -1
(nil))
Oh yes because the struct has one element so it will have a DFmode so it will
copy via DF here ...
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[not found] <bug-71460-4@http.gcc.gnu.org/bugzilla/>
2023-06-05 7:29 ` [Bug target/71460] Copying structs can trap (on x86-32) due to SNaN to QNaN pinskia at gcc dot gnu.org
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