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* [Bug target/82680] Use cmpXXss and cmpXXsd for setcc boolean compare
[not found] <bug-82680-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-18 21:10 ` pinskia at gcc dot gnu.org
2021-08-18 21:11 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-18 21:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82680
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-18
Ever confirmed|0 |1
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
MSVC (in 64bit 19.30.30423.0) does:
vucomisd xmm0, xmm1
jp SHORT $LN3@g
jne SHORT $LN3@g
mov eax, 1
ret 0
$LN3@g:
xor eax, eax
ret 0
MSVC (32bit, 19.30.30423.0) does:
vmovsd xmm0, QWORD PTR _x$[esp-4]
vucomisd xmm0, QWORD PTR _y$[esp-4]
mov edx, 1
lahf
xor ecx, ecx
test ah, 68 ; 00000044H
cmovnp ecx, edx
mov eax, ecx
; Line 5
ret 0
I don't know why there is a difference as both are the same version.
Confirmed.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/82680] Use cmpXXss and cmpXXsd for setcc boolean compare
[not found] <bug-82680-4@http.gcc.gnu.org/bugzilla/>
2021-08-18 21:10 ` [Bug target/82680] Use cmpXXss and cmpXXsd for setcc boolean compare pinskia at gcc dot gnu.org
@ 2021-08-18 21:11 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-18 21:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82680
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
I should say this is with the following options:
/O2 /std:c++latest /arch:AVX2
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <bug-82680-4@http.gcc.gnu.org/bugzilla/>
2021-08-18 21:10 ` [Bug target/82680] Use cmpXXss and cmpXXsd for setcc boolean compare pinskia at gcc dot gnu.org
2021-08-18 21:11 ` pinskia at gcc dot gnu.org
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