https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63483
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
How can I reproduce this? Even with -mcpu=ev4 I get
$foo..ng:
foo:
.frame $30,0,$26,0
$LFB0:
.cfi_startproc
.prologue 0
mov $31,$2
ldq_u $1,1($2)
zapnot $1,253,$1
stq_u $1,1($2)
call_pal 0x81
I configured with --target=alphaev68-linux-gnu
And used -O2 -mcpu=ev4 (sounds "earliest").
Note that the pointers 'a' and 'b' are likely made constant by IPA reference
and thus loads of the pointers can validly get /u, but not loads from the
pointers (well, we may even figure out their value is always zero...).
Does it "fix" the testcase if you have a function writing to a and b or
making a and b not static?
