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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109502] [12/13 Regression] wrong code with -O -ftree-vectorize -fvect-cost-model=unlimited on aarch64
Date: Fri, 14 Apr 2023 02:03:39 +0000 [thread overview]
Message-ID: <bug-109502-4-i3SCRXRvWl@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-109502-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109502
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|target |tree-optimization
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-04-14
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
SLP transforms:
g.0_1 = g;
_2 = g.0_1 == 0;
a_7 = (unsigned int) _2;
_3 = a_7 % 6;
_4 = _3 == 0;
_5 = (unsigned int) _4;
a_8 = _5 + a_7;
To:
g.0_1 = g;
_2 = g.0_1 == 0;
a_7 = (unsigned int) _2;
_3 = a_7 % 6;
_15 = {_3, g.0_1};
mask__4.4_16 = { 0, 0 } == _15;
vect__5.5_19 = VIEW_CONVERT_EXPR<vector(2) unsigned int>(mask__4.4_16);
_17 = BIT_FIELD_REF <mask__4.4_16, 32, 0>;
_18 = (bool) _17;
_4 = _3 == 0;
_5 = (unsigned int) _18;
_20 = .REDUC_PLUS (vect__5.5_19);
a_8 = _20;
Which is wrong. The if anything there is a missing - missing after the
reduc_plus (or before) when it translates the bools comparisons into vector
comparisons.
next prev parent reply other threads:[~2023-04-14 2:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-13 16:05 [Bug target/109502] New: " zsojka at seznam dot cz
2023-04-14 1:56 ` [Bug target/109502] " pinskia at gcc dot gnu.org
2023-04-14 2:03 ` pinskia at gcc dot gnu.org [this message]
2023-04-14 2:04 ` [Bug tree-optimization/109502] " pinskia at gcc dot gnu.org
2023-04-14 7:28 ` rguenth at gcc dot gnu.org
2023-04-14 7:53 ` rguenth at gcc dot gnu.org
2023-04-14 9:46 ` cvs-commit at gcc dot gnu.org
2023-04-14 9:46 ` [Bug tree-optimization/109502] [12 " rguenth at gcc dot gnu.org
2023-04-17 9:15 ` cvs-commit at gcc dot gnu.org
2023-04-17 9:21 ` [Bug tree-optimization/109502] [11 " rguenth at gcc dot gnu.org
2023-05-02 12:03 ` cvs-commit at gcc dot gnu.org
2023-05-02 12:06 ` rguenth at gcc dot gnu.org
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