------- Comment #9 from ian at airs dot com 2006-02-07 08:23 ------- I now have a reasonably simple reload patch which eliminates the unnecessary move. For the test case in comment #4, I get this code with -O2 -momit-leaf-frame-pointer:
foo:
movl 12(%esp), %eax
movl 16(%esp), %edx
addl 4(%esp), %eax
adcl 8(%esp), %edx
orl %eax, %edx
jne .L7
rep ; ret
.p2align 4,,7
.L7:
jmp gh
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15792
