From mboxrd@z Thu Jan  1 00:00:00 1970
From: paul.stoeber@in.stud.tu-ilmenau.de
To: gcc-gnats@gcc.gnu.org
Subject: optimization/4483: powerpc, -O2, ICE (affects building linux kernel)
Date: Fri, 05 Oct 2001 11:36:00 -0000
Message-id: <200110051835.UAA08505@clouet.rz.tu-ilmenau.de>
X-SW-Source: 2001-10/msg00105.html
List-Id: <gcc-prs.sourceware.org>

>Number:         4483
>Category:       optimization
>Synopsis:       powerpc, -O2, ICE (affects building linux kernel)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 05 11:36:02 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Paul Stoeber
>Release:        3.1 20010930 (experimental)
>Organization:
>Environment:
System: Linux tulgey 2.4.9-pre3 #10 Wed Oct 3 16:18:13 UTC 2001 ppc unknown
Architecture: ppc
host: powerpc-unknown-linux-gnu
build: powerpc-unknown-linux-gnu
target: powerpc-unknown-linux-gnu
configured with: ../gcc/configure --prefix=/home/wtq/gcc-inst --enable-languages=c
>Description:
input file ice.c:
-------------------------------------------------------
int ugh(int to, int from, int size)
{
}

static inline int grmpf(int to, int from, int n)
{
	if (n <= 0x80000000UL) {
		return ugh(to, from, n);
	}
	return n;
}

static inline int blchh(int to, int from, int n)
{
	if ( n == 0 || (n <= 0x80000000UL)&&(to <= 0x80000000UL-n)) {
		return ugh(to, from, n);
	}
	return n;
}

void func(void)
{
	int x = 42;

	grmpf(7, 11, x);
	blchh(13, 17, x);
}
-------------------------------------------------------

command line:
-------------------------------------------------------
/home/wtq/gcc-inst/bin/gcc -v -O2 -c ice.c
-------------------------------------------------------

standard error:
-------------------------------------------------------
Reading specs from /home/wtq/gcc-inst/lib/gcc-lib/powerpc-unknown-linux-gnu/3.1/specs
Configured with: ../gcc/configure --prefix=/home/wtq/gcc-inst --enable-languages=c
Thread model: single
gcc version 3.1 20010930 (experimental)
 /home/wtq/gcc-inst/lib/gcc-lib/powerpc-unknown-linux-gnu/3.1/cc1 -lang-c -v -D__GNUC__=3 -D__GNUC_MINOR__=1 -D__GNUC_PATCHLEVEL__=0 -DPPC -D__ELF__ -Dpowerpc -D__PPC__ -D__ELF__ -D__powerpc__ -D__PPC -D__powerpc -Acpu=powerpc -Amachine=powerpc -D__CHAR_UNSIGNED__ -D__OPTIMIZE__ -D__STDC_HOSTED__=1 -D_CALL_SYSV -D_BIG_ENDIAN -D__BIG_ENDIAN__ -Amachine=bigendian -D_ARCH_PPC -D__unix__ -D__linux__ -Dunix -D__unix -Dlinux -D__linux -Asystem=unix -Asystem=posix ice.c -quiet -dumpbase ice.c -O2 -version -o /tmp/ccbSU2fj.s
GNU CPP version 3.1 20010930 (experimental) (cpplib) (PowerPC GNU/Linux)
GNU C version 3.1 20010930 (experimental) (powerpc-unknown-linux-gnu)
	compiled by GNU C version 2.95.2 20000220 (Debian GNU/Linux).
ignoring nonexistent directory "/home/wtq/gcc-inst/powerpc-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /home/wtq/gcc-inst/include
 /home/wtq/gcc-inst/lib/gcc-lib/powerpc-unknown-linux-gnu/3.1/include
 /usr/include
End of search list.
ice.c: In function `func':
ice.c:27: Could not split insn
(insn 95 23 94 (set (reg:SI 9 r9 [95])
        (const_int -2147483690 [0xffffffff7fffffd6])) 289 {*movsi_internal1} (insn_list:REG_DEP_ANTI 23 (nil))
    (expr_list:REG_EQUIV (const_int -2147483690 [0xffffffff7fffffd6])
        (nil)))
ice.c:27: Internal compiler error in final_scan_insn, at final.c:2912
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.
-------------------------------------------------------

>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: