[Bug rtl-optimization/78200] [7 Regression] 429.mcf of cpu2006 regresses in GCC trunk for avx2 target.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78200

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it's

addq    (%r14), %rdi
jns     .L98

.L98:
cmpl    $2, %r9d
jne     .L97
testq   %rdi, %rdi
jle     .L97 

vs.

addq    (%r14), %rdi
cmpq    $0, %rdi
jge     .L98

.L98:
jle     .L97
cmpl    $2, %r9d
jne     .L97

I would guess the order of the branches after .L98 in the first case is
unrelated (to be checked).