i686 gcc 12: regression at -O1 or -O2

[mr-c]

test:         x86/sse/emul/c
start time:   16:39:16
duration:     0.03s
result:       exit status 1
command:      MALLOC_PERTURB_=148 '/<<PKGBUILDDIR>>/gcc_test/test/x86/sse-emul-c'
----------------------------------- stderr -----------------------------------
../test/x86/sse.c:4307: assertion failed: r[0] == test_vec[i].r[0] (19623 == 292)
../test/x86/sse.c:4348: assertion failed: r[0] == test_vec[i].r[0] (19623 == 292)