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* Re: target/6920: gcc-arm-elf v3.1 Wrong assembler code with -mthumb -Os (-O2)
@ 2002-09-30 5:11 rearnsha
0 siblings, 0 replies; 2+ messages in thread
From: rearnsha @ 2002-09-30 5:11 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, nobody, omakarenko, rearnsha
Synopsis: gcc-arm-elf v3.1 Wrong assembler code with -mthumb -Os (-O2)
Responsible-Changed-From-To: unassigned->rearnsha
Responsible-Changed-By: rearnsha
Responsible-Changed-When: Mon Sep 30 05:11:45 2002
Responsible-Changed-Why:
.
State-Changed-From-To: open->closed
State-Changed-By: rearnsha
State-Changed-When: Mon Sep 30 05:11:45 2002
State-Changed-Why:
I've checked in a change that should solve this problem on both the trunk and 3.2 branch. If you still get this problem with the fixed code then please resubmit.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6920
^ permalink raw reply [flat|nested] 2+ messages in thread
* target/6920: gcc-arm-elf v3.1 Wrong assembler code with -mthumb -Os (-O2)
@ 2002-06-03 6:26 omakarenko
0 siblings, 0 replies; 2+ messages in thread
From: omakarenko @ 2002-06-03 6:26 UTC (permalink / raw)
To: gcc-gnats
>Number: 6920
>Category: target
>Synopsis: gcc-arm-elf v3.1 Wrong assembler code with -mthumb -Os (-O2)
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Jun 03 06:26:03 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: omakarenko@cyberplat.ru
>Release: unknown-1.0
>Organization:
>Environment:
Host: linux-x86
Target: arm-elf
Version: GCC 3.1 (arm/elf)
compiled by GNU C version 2.96 20000731 (RedHat Linux 7.3 2.96-110)
Configured with: /home/oleg/arm/tools/gcc/configure --target=arm-elf --enable-languages=c,c++
--disable-shared --disable-nls --with-gnu-as --with-gnu-ld --disable-checking
--with-multilibs --with-newlib --disable-newlib-io-float
Thread model:single
>Description:
The following simple file:
/* test.c stupid code to demonstrate the bug only */
void func(int d, char *x)
{
char *a[32];
if (a[d++] != (char *) 0)
{
x = a[d];
}
a[d] = x;
}
when compiled with
arm-elf-gcc -o test.Os.s -S -Os -mthumb test.c
produces code like:
ldr r3, [r3, sp]
which is wrong for Thumb mode (sp can not be used in thumb mode)
gas then complains with "Error: lo register required"
-O2 and -O3 give the same result.
That is a duplicate report for c/6916. The attached file was somehow missed from the previous report. Sorry for that.
>How-To-Repeat:
compile test.c with -mthumb and -Os (or -O2, -O3) options
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-09-30 5:11 target/6920: gcc-arm-elf v3.1 Wrong assembler code with -mthumb -Os (-O2) rearnsha
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2002-06-03 6:26 omakarenko
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