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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106905] [13 Regression] ia64: ICE in in
 vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:8412 on zstd-1.5.2 since
 r13-2503-gc13223b790bbc5
Date: Tue, 13 Sep 2022 05:18:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106905

--- Comment #4 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Arseny Solokha from comment #2)
> It also can be reproduced for x86_64 when compiling the following testcas=
e,
> reduced from gcc/testsuite/gcc.target/i386/pr103144-mul-2.c, w/
> -march=3Dsilvermont -O2 -fvect-cost-model=3Ddynamic:
>=20
> void
> foo_mul_peel (int *a, int b)
> {
>   int i;
>=20
>   for (i =3D 0; i < 7; ++i)
>     {
>       b *=3D 2;
>       a[i] =3D b;
>     }
> }

Thanks for the testcase.
I can confirm it's the same issue in #c3=