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From: "steven at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/19464] [3.3/3.4/4.0 Regression] gcse causes poor register allocation
Date: Fri, 21 Jan 2005 12:51:00 -0000	[thread overview]
Message-ID: <20050121125115.10504.qmail@sourceware.org> (raw)
In-Reply-To: <20050115205816.19464.belyshev@depni.sinp.msu.ru>


------- Additional Comments From steven at gcc dot gnu dot org  2005-01-21 12:51 -------
With my patch I get almost perfect code for amd64: 
 
.globl f 
        .type   f, @function 
f: 
.LFB2: 
        decl    %edi 
        je      .L6 
        movl    r5(%rip), %r9d 
        movl    r4(%rip), %r8d 
        xorl    %r10d, %r10d 
        movl    r3(%rip), %esi 
        movl    r2(%rip), %ecx 
        movl    r0(%rip), %edx 
        movl    r1(%rip), %eax 
        .p2align 4,,7 
.L4: 
        addl    %edx, %eax 
        incl    %r10d 
        addl    %eax, %ecx 
        addl    %ecx, %esi 
        addl    %esi, %r8d 
        addl    %r8d, %r9d 
        addl    %r9d, %edx 
        cmpl    %r10d, %edi 
        jne     .L4 
        movl    %r9d, r5(%rip) 
        movl    %r8d, r4(%rip) 
        movl    %esi, r3(%rip) 
        movl    %ecx, r2(%rip) 
        movl    %edx, r0(%rip) 
        movl    %eax, r1(%rip) 
.L6: 
        rep ; ret 
 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19464


  parent reply	other threads:[~2005-01-21 12:51 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-15 20:58 [Bug rtl-optimization/19464] New: " belyshev at depni dot sinp dot msu dot ru
2005-01-15 20:59 ` [Bug rtl-optimization/19464] " belyshev at depni dot sinp dot msu dot ru
2005-01-15 21:04 ` pinskia at gcc dot gnu dot org
2005-01-15 21:44 ` dberlin at dberlin dot org
2005-01-15 21:48 ` dberlin at dberlin dot org
2005-01-21 12:25 ` steven at gcc dot gnu dot org
2005-01-21 12:51 ` steven at gcc dot gnu dot org [this message]
2005-01-23  0:42 ` belyshev at depni dot sinp dot msu dot ru
2005-01-23  1:17 ` pinskia at gcc dot gnu dot org
2005-01-23  1:43 ` belyshev at depni dot sinp dot msu dot ru
2005-01-23 19:36 ` cvs-commit at gcc dot gnu dot org
2005-01-23 19:43 ` steven at gcc dot gnu dot org

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