This is GCC Bugzilla

This is GCC Bugzilla Version 2.20+

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Compile the below with gcc chelper-exploit.c -c -O -fforce-mem -msse :
typedef int v4sf __attribute__ ((mode(V4SF)));

void cprocess(v4sf* d_r) 
{
 v4sf force= -(*d_r);
}

And the compiler (cc1) will try to allocate all memory.

Problem disappears with removing the '-', or by switching to 3.3.3 or to the SSA
branche, by removing -O or removing -fforce-mem, by removing -msse

Confirmed, here is an example which is happens even on the tree-ssa:
typedef int v4sf __attribute__ ((mode(V4SF)));

v4sf cprocess(v4sf* d_r)
{
 v4sf force= -(*d_r);
  return force;
}

Richard --

As the IA32 maintainer, would you please look at this?

Tnanks,

-- Mark

Patch in progress.

Subject: Bug 15193

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2004-06-07 17:21:07

Modified files:
	gcc            : ChangeLog expmed.c 
	gcc/config/i386: i386.md 

Log message:
	PR rtl-opt/15193
	* expmed.c (extract_bit_field): Fix vector_extract return.
	* config/i386/i386.md (negv4sf2): New pattern.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3861&r2=2.3862
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expmed.c.diff?cvsroot=gcc&r1=1.160&r2=1.161
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/i386.md.diff?cvsroot=gcc&r1=1.541&r2=1.542

Subject: Bug 15193

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	rth@gcc.gnu.org	2004-06-07 18:09:13

Modified files:
	gcc            : ChangeLog expmed.c 

Log message:
	PR rtl-opt/15193
	* expmed.c (extract_bit_field): Fix vector_extract return.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.472&r2=2.2326.2.473
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expmed.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.148.4.1&r2=1.148.4.2

Fixed.