https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63347
--- Comment #3 from Mikael Pettersson <mikpelinux at gmail dot com> ---
I can't reproduce with a vanilla gcc-4.8.3 configured for m68k-elf. For the
"if (0x0 == haddr) ..." it generates:
lea (20,%sp),%sp
tst.l %d2
seq %d2
extb.l %d2
neg.l %d2
which looks correct and matches your 4.7 output.
How was your gcc configured?
