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From: Dara Hazeghi <dhazeghi@yahoo.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: optimization/8867: [sh] wrong code: double use of register
Date: Sat, 10 May 2003 09:16:00 -0000 [thread overview]
Message-ID: <20030510091601.768.qmail@sources.redhat.com> (raw)
The following reply was made to PR optimization/8867; it has been noted by GNATS.
From: Dara Hazeghi <dhazeghi@yahoo.com>
To: gcc-gnats@gcc.gnu.org, marcus@mc.pp.se
Cc:
Subject: Re: optimization/8867: [sh] wrong code: double use of register
Date: Sat, 10 May 2003 02:06:17 -0700
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-
trail&database=gcc&pr=8867
Hello,
could the submitter please determine whether more current versions of
gcc (ie 3.3 prerelease) generate valid code? I checked with 3.2.3, but
the code it generated seems pretty much identical to the (wrong) code
generated by 3.2.1. With 3.3, I get something a bit different, and
mainline cvs gives something even more different. So if the submitter
could determine if those are correct, it would be greatly appreciated.
Thanks,
Dara
code generated by 3.3:
.file "junk.c"
.text
.text
.align 1
.global _foo
.type _foo, @function
_foo:
mov.l r8,@-r15
mov.l r9,@-r15
mov.l r10,@-r15
mov.l r11,@-r15
mov.l r12,@-r15
mov.l r13,@-r15
mov.l r14,@-r15
sts.l pr,@-r15
add #-84,r15
mov r15,r14
mov #64,r0
mov.l r4,@(r0,r14)
mov r5,r13
mov r6,r12
mov.l @r12+,r0
tst r0,r0
bt .L3
.L7:
shll2 r0
mov.l .L9,r1
mov.l @(r0,r1),r1
mov #64,r2
add r14,r2
mov.l r1,@(4,r2)
mov.l .L10,r1
mov.l @(r0,r1),r8
mov.l .L11,r1
mov.l @(r0,r1),r10
mov.l .L12,r1
mov.l @(r0,r1),r11
mov.l .L13,r1
mov.l @(r0,r1),r1
mov.l r1,@(8,r2)
mov.l .L14,r1
mov.l @(r0,r1),r1
mov.l r1,@(12,r2)
mov.l @(4,r2),r1
tst r1,r1
bt .L5
mov.l @(0,r2),r4
add r11,r4
mov r13,r1
add r8,r1
mov.l r1,@(16,r2)
mov.l .L20,r2
jsr @r2
mov r1,r5
mov #64,r0
mov.l @(r0,r14),r9
add r8,r9
mov.l @(r0,r14),r8
add r10,r8
mov r9,r4
mov.l .L20,r2
jsr @r2
mov r8,r5
mov r9,r10
add r11,r10
mov r10,r4
mov.l .L20,r1
jsr @r1
mov r8,r5
mov #72,r0
mov.l @(r0,r14),r2
add r2,r8
mov r9,r4
mov.l .L20,r1
jsr @r1
mov r8,r5
mov r10,r4
mov.l .L20,r2
jsr @r2
mov r8,r5
mov #64,r1
add r14,r1
mov.l @(4,r1),r5
add r11,r5
mov.l .L20,r2
jsr @r2
mov.l @(16,r1),r4
.L5:
mov #64,r1
add r14,r1
mov.l @(0,r1),r2
mov.l @(12,r1),r1
add r1,r2
mov #64,r1
add r14,r1
mov.l r2,@(0,r1)
mov.l @(12,r1),r2
sub r2,r13
cmp/pl r13
bf .L3
mov.l @r12+,r0
tst r0,r0
bf .L7
.L3:
add #84,r14
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r13
mov.l @r15+,r12
mov.l @r15+,r11
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
.L21:
.align 2
.L9:
.long _g1
.L10:
.long _g3
.L11:
.long _g4
.L12:
.long _g5
.L13:
.long _g6
.L14:
.long _g7
.L20:
.long _bar
.size _foo, .-_foo
.ident "GCC: (GNU) 3.3 20030509 (prerelease)"
Code generated by 3.4:
.file "junk.c"
.text
.text
.align 1
.global _foo
.type _foo, @function
_foo:
mov.l r8,@-r15
mov.l r9,@-r15
mov.l r10,@-r15
mov.l r11,@-r15
mov.l r12,@-r15
mov.l r13,@-r15
mov.l r14,@-r15
sts.l pr,@-r15
add #-88,r15
mov r15,r14
mov r4,r11
mov r5,r12
mov #64,r0
mov r6,r2
add #4,r2
mov.l r2,@(r0,r14)
add #-4,r2
mov.l @r2+,r0
.L8:
tst r0,r0
bt .L3
shll2 r0
mov.l .L9,r1
mov.l @(r0,r1),r1
mov #64,r2
add r14,r2
mov.l r1,@(4,r2)
mov.l .L10,r1
mov.l @(r0,r1),r8
mov.l .L11,r1
mov.l @(r0,r1),r1
mov.l r1,@(8,r2)
mov.l .L12,r1
mov.l @(r0,r1),r13
mov.l .L13,r1
mov.l @(r0,r1),r1
mov.l r1,@(12,r2)
mov.l .L14,r1
mov.l @(r0,r1),r10
mov.l @(4,r2),r1
tst r1,r1
bt .L4
mov r12,r1
add r8,r1
mov.l r1,@(16,r2)
mov r11,r4
add r13,r4
mov.l .L20,r2
jsr @r2
mov r1,r5
mov r11,r9
add r8,r9
mov #72,r0
mov.l @(r0,r14),r8
add r11,r8
mov r9,r4
mov.l .L20,r2
jsr @r2
mov r8,r5
mov r9,r2
add r13,r2
mov #84,r0
mov.l r2,@(r0,r14)
mov r2,r4
mov.l .L20,r1
jsr @r1
mov r8,r5
mov #76,r0
mov.l @(r0,r14),r2
add r2,r8
mov r9,r4
mov.l .L20,r1
jsr @r1
mov r8,r5
mov #84,r0
mov.l @(r0,r14),r4
mov.l .L20,r1
jsr @r1
mov r8,r5
mov #64,r2
add r14,r2
mov.l @(16,r2),r4
mov.l @(4,r2),r5
mov.l .L20,r1
jsr @r1
add r13,r5
.L4:
add r10,r11
sub r10,r12
cmp/pl r12
bf .L3
mov #64,r0
mov.l @(r0,r14),r1
add #4,r1
mov.l r1,@(r0,r14)
add #-4,r1
bra .L8
mov.l @r1+,r0
.align 1
.L3:
add #88,r14
mov r14,r15
lds.l @r15+,pr
mov.l @r15+,r14
mov.l @r15+,r13
mov.l @r15+,r12
mov.l @r15+,r11
mov.l @r15+,r10
mov.l @r15+,r9
rts
mov.l @r15+,r8
.L21:
.align 2
.L9:
.long _g1
.L10:
.long _g3
.L11:
.long _g4
.L12:
.long _g5
.L13:
.long _g6
.L14:
.long _g7
.L20:
.long _bar
.size _foo, .-_foo
.ident "GCC: (GNU) 3.4 20030509 (experimental)"
next reply other threads:[~2003-05-10 9:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-10 9:16 Dara Hazeghi [this message]
2003-05-10 16:36 Marcus Comstedt
2003-05-10 19:46 Dara Hazeghi
2003-05-12 11:28 giovannibajo
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