On Linux/x86_64,

11f73c82f178beb9f3f29cbfe2e0a5e592e40b69 is the first bad commit
commit 11f73c82f178beb9f3f29cbfe2e0a5e592e40b69
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Tue Jul 15 05:05:10 2025 +0800

    x86: Convert MMX integer loads from constant vector pool

caused

FAIL: gfortran.dg/guality/arg1.f90   -O3 -fomit-frame-pointer -funroll-loops 
-fpeel-loops -ftracer -finline-functions  line 14 a(10) == 10
FAIL: gfortran.dg/guality/arg1.f90   -O3 -g  line 14 a(10) == 10

with GCC configured with

../../gcc/configure 
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-2305/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="guality.exp=gfortran.dg/guality/arg1.f90 
--target_board='unix{-m32\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
at haochen dot jiang at intel.com.)
(If you met problems with cascadelake related, disabling AVX512F in command 
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)

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