[Bug tree-optimization/26726] -fivopts producing out of bounds array refs
rguenth at gcc dot gnu dot org
gcc-bugzilla@gcc.gnu.org
Thu Apr 27 15:59:00 GMT 2006
------- Comment #8 from rguenth at gcc dot gnu dot org 2006-04-27 15:59 -------
The offset causes the assembler to be sub-optimal:
.LCFI2:
leal -12(%ebp), %eax
leal 4(%ebp), %edx
.p2align 4,,7
.L2:
movl $1, -4(%eax)
addl $4, %eax
cmpl %edx, %eax
jne .L2
and I can imagine on auto-decrement targets it would be even worse (though
I didn't check).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26726
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