https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61559
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> ---
On a related note, -march=i386 generates long sequences of rol insns, e.g.:
foo5:
movl 4(%esp), %eax
rolw $8, %ax
roll $16, %eax
rolw $8, %ax
movl 8(%esp), %edx
rolw $8, %dx
roll $16, %edx
rolw $8, %dx
andl %edx, %eax
rolw $8, %ax
roll $16, %eax
rolw $8, %ax
ret
Please note that this arch doesn't have bswap insn, but this insn isn't
generated for optimized code anyway.
