[Bug target/66749] [4.9/5/6] gcc.target/i386/addr-sel-1.c fails to merge array index into one instruction with -m32 -mregparm=3 or with -miamcu

[julia.koval at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66749

--- Comment #1 from Yulia Koval <julia.koval at intel dot com> ---
Reproduce:
./gcc -Bgcc addr-sel-1.c -O2 -m32 -mregparm=3 -mtune=i686 -S -o addr-sel-1.s

-mtune=i686 is dg-option of the test.