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From: "jakub 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 18:11:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113059

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
$ /opt/notnfs/gcc-bisect/obj/gcc/cc1.r14-6209 -quiet -nostdinc -O3 -m32
-march=3Dznver2 -ggdb3 hc2cf2_16.i -o hc2cf2_16.s1
$ /opt/notnfs/gcc-bisect/obj/gcc/cc1.r14-6210 -quiet -nostdinc -O3 -m32
-march=3Dznver2 -ggdb3 hc2cf2_16.i -o hc2cf2_16.s2
$ gcc -c -o /tmp/hc2cf2_16.o -xassembler /tmp/hc2cf2_16.s1 -m32
$ gcc -O3 -m32 -march=3Dznver2 -ggdb3 -o bench2 bench-bench.o bench-hook.o
bench-fftw-bench.o /tmp/hc2cf2_16.o ../.libs/libfftw3.a
../libbench2/libbench2.a -lm; ./bench2 --verbose=3D1   --verify 'obc3x13'
--verify 'ibc3x13' --verify '//ifr4752'
obc3x13 2.86313e-16 2.84445e-16 7.6393e-16
ibc3x13 2.55967e-16 2.84445e-16 7.42983e-16
//ifr4752 2.74708e-16 1.85534e-15 9.24976e-16
$ gcc -c -o /tmp/hc2cf2_16.o -xassembler /tmp/hc2cf2_16.s2 -m32
$ gcc -O3 -m32 -march=3Dznver2 -ggdb3 -o bench2 bench-bench.o bench-hook.o
bench-fftw-bench.o /tmp/hc2cf2_16.o ../.libs/libfftw3.a
../libbench2/libbench2.a -lm; ./bench2 --verbose=3D1   --verify 'obc3x13'
--verify 'ibc3x13' --verify '//ifr4752'
obc3x13 2.86313e-16 2.84445e-16 7.6393e-16
ibc3x13 2.55967e-16 2.84445e-16 7.42983e-16
corrupted size vs. prev_size
Aborted (core dumped)=