[Bug target/36539] [4.4 regression] IRA doesn't allocate asm output being returned to eax

["astrange at ithinksw dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #5 from astrange at ithinksw dot com  2008-09-04 04:02 -------
It is fixed for me on x86-64. For i386 it's still suboptimal:
_get_cabac:
        subl    $28, %esp
        movl    %esi, 16(%esp)
        movl    %edi, 20(%esp)
        movl    %ebx, 12(%esp)
        movl    %ebp, 24(%esp)
        movl    32(%esp), %esi
        movl    36(%esp), %edi
        movl    (%esi), %eax
        movl    4(%esi), %ebx
# 16 "../cabac-ret.i" 1
        #%ebp %ebx %ax 16(%esi) %edi
# 0 "" 2
        movl    %eax, (%esi)
        movl    %ebx, 4(%esi)
        movl    %ebp, %eax
        movl    12(%esp), %ebx
        andl    $1, %eax
        movl    16(%esp), %esi
        movl    20(%esp), %edi
        movl    24(%esp), %ebp
        addl    $28, %esp
        ret

but not a regression (code is worse without IRA).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36539