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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110170] Sub-optimal conditional jumps in conditional-swap with floating point
Date: Thu, 08 Jun 2023 13:32:53 +0000	[thread overview]
Message-ID: <bug-110170-4-VEcEwWQZIy@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-110170-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110170

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So for arm, GCC does produce the code you want:
```
        vcmpe.f64       d17, d16
        vmrs    APSR_nzcv, FPSCR
        ite     pl
        vmovpl.f64      d18, d17
        vmovmi.f64      d18, d16
        it      mi
        vmovmi.f64      d16, d17
```

RTL CE1 (ifcvt) detects it:
if-conversion succeeded through noce_convert_multiple_sets


So maybe there is some cost issue. Because arm64 does not do it either.

  parent reply	other threads:[~2023-06-08 13:32 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-08 11:31 [Bug tree-optimization/110170] New: " antoshkka at gmail dot com
2023-06-08 11:34 ` [Bug tree-optimization/110170] " pinskia at gcc dot gnu.org
2023-06-08 11:57 ` [Bug target/110170] " antoshkka at gmail dot com
2023-06-08 13:32 ` pinskia at gcc dot gnu.org [this message]
2023-06-08 19:40 ` pinskia at gcc dot gnu.org
2023-06-09  5:38 ` crazylht at gmail dot com
2023-06-09  6:40 ` crazylht at gmail dot com
2023-06-09  7:01 ` crazylht at gmail dot com
2023-06-09  7:03 ` rguenth at gcc dot gnu.org
2023-06-12  2:17 ` crazylht at gmail dot com
2023-06-12  9:09 ` crazylht at gmail dot com
2023-07-04  5:46 ` crazylht at gmail dot com
2023-07-06  5:54 ` cvs-commit at gcc dot gnu.org
2023-07-10  1:06 ` cvs-commit at gcc dot gnu.org
2023-07-11  9:51 ` antoshkka at gmail dot com
2023-07-11 13:23 ` crazylht at gmail dot com
2023-07-11 13:57 ` cvs-commit at gcc dot gnu.org
2023-07-18 10:28 ` rguenth at gcc dot gnu.org
2023-07-18 10:33 ` crazylht at gmail dot com
2023-07-18 13:48 ` rguenth at gcc dot gnu.org
2023-07-21  8:18 ` rguenth at gcc dot gnu.org
2023-10-17  6:31 ` cvs-commit at gcc dot gnu.org
2023-10-17 11:14 ` cvs-commit at gcc dot gnu.org
2023-10-26  5:30 ` cvs-commit at gcc dot gnu.org

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