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References: <bug-30505-7667@http.gcc.gnu.org/bugzilla/>
Subject: [Bug inline-asm/30505] [4.2 regression] asm operand has impossible constraints.
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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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------- Comment #1 from pinskia at gcc dot gnu dot org  2007-01-18 22:40 -------
I think the problem is that we don't combine
 (subreg:SI (reg:DI 63) 0)

with 
(insn 11 10 12 2 (parallel [
            (set (reg:DI 63)
                (lshiftrt:DI (reg:DI 61 [ dividend.0 ])
                    (const_int 32 [0x20])))
            (clobber (reg:CC 17 flags))
        ]) 322 {*lshrdi3_1} (insn_list:REG_DEP_TRUE 10 (nil))
    (expr_list:REG_UNUSED (reg:CC 17 flags)
        (nil)))

into:
(subreg:SI (reg:DI 63) 4)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30505