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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/113059] [14 regression] fftw fails tests for -O3 -m32
 -march=znver2 since r14-6210-ge44ed92dbbe9d4
Date: Fri, 22 Dec 2023 13:55:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113059

--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> Any progress with the bisection?

sorry, not yet. I've been away from the computer mostly for an emergency.

I did make a start, but I got frustrated with how the Makefile deps seem br=
oken
(replacing a .o and running 'make' doesn't trigger a rebuild correctly in a=
ll
cases).

> Or at least details what exactly are you compiling (with what patches etc=
.)?

I can reproduce it consistently with:
```
wget https://www.fftw.org/fftw-3.3.10.tar.gz
tar xvf fftw-3.3.10.tar.xz && cd fftw-3.3.10
./configure CFLAGS=3D"-O3 -m32 -march=3Dznver2 -ggdb3"
make -j$(nproc)
make -j$(nproc) check
```

Let me know if you need more.=