[Bug target/13685] Building KDE3.2 clock applet with -march=pentium3 -O1 gives SIGSEGV

["roger dot larsson at norran dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From roger dot larsson at norran dot net  2004-01-14 23:50 -------
Code is not from a lib, it is generated by gcc. 
=> I do not think this is a DUP of bug 10395 
 
I did a little script to search for the problems. 
# /bin/bash 
# Filename: objdump_find_problematic 
 
grep_sse () 
{ 
	grep $1 "\(\(mov\(ap\|up\|ntp\)\|shufp\|unpck\(hp\|lp\)\|\(add\|\mul\|
div\|and\|andn\|or\|xor\|max\|min\|cmp\.\.\|sqrt\|rsqrt\|rcp\)p\)s\|
\(cvt\(ps2pi\|ss2pi\)\)\)" 
} 
 
if objdump -d $1 | grep_sse -q ; then 
   echo $1 
   objdump -d $1 | grep_sse 
fi 
 
and run my complete installation of kdecvs (-Os -march=pentium3) through it. 
 
# find /opt/kdecvs/ -type f -perm +111 | xargs -n 1 
bin/objdump_find_problematic | tee problematic.sse 
 
Among those found where 
	kfiresaver3d starting it will crash at a unaligned movaps 
	 (actual code from glibc-2.3) 
 
Complete list, some are OK with aligned offset: 
 
# more problematic.sse | grep "0x\|opt" 
/opt/kdecvs/bin/kdm_greet 
 805e5ac:       0f 29 85 98 fc ff ff    movaps %xmm0,0xfffffc98(%ebp) 
/opt/kdecvs/bin/keuphoria.kss 
 804fe6e:       0f 29 45 e0             movaps %xmm0,0xffffffe0(%ebp) 
 80500fd:       0f 29 45 d0             movaps %xmm0,0xffffffd0(%ebp) 
/opt/kdecvs/bin/kfiresaver3d 
 80502ac:       0f 29 85 7c ff ff ff    movaps %xmm0,0xffffff7c(%ebp) 
 8050529:       0f 29 85 64 ff ff ff    movaps %xmm0,0xffffff64(%ebp) 
/opt/kdecvs/lib/libartsflow.so.1.0.0 
/opt/kdecvs/lib/kde3/kdeprint_cups.so 
   4042d:       0f 29 45 8c             movaps %xmm0,0xffffff8c(%ebp) 
/opt/kdecvs/lib/kde3/kcm_clock.so 
    e294:       0f 29 85 20 fe ff ff    movaps %xmm0,0xfffffe20(%ebp) 
/opt/kdecvs/lib/kde3/libkiviopart.so 
   f8a94:       0f 29 45 a8             movaps %xmm0,0xffffffa8(%ebp) 
   f8d47:       0f 29 45 80             movaps %xmm0,0xffffff80(%ebp) 
   f90ad:       0f 29 85 5c ff ff ff    movaps %xmm0,0xffffff5c(%ebp) 
   fa0ac:       0f 29 45 a8             movaps %xmm0,0xffffffa8(%ebp) 
   fa305:       0f 29 45 a4             movaps %xmm0,0xffffffa4(%ebp) 
/opt/kdecvs/lib/kde3/libkpovmodelerpart.so.0.0.0 
/opt/kdecvs/lib/libkdefx.so.4.2.0 
/opt/kdecvs/lib/libnoatunarts.so 
   576d8:       0f 10 51 10             movups 0x10(%ecx),%xmm2 
   576dc:       0f c6 d2 00             shufps $0x0,%xmm2,%xmm2 
   576e0:       0f 10 61 14             movups 0x14(%ecx),%xmm4 
   576e4:       0f 10 69 24             movups 0x24(%ecx),%xmm5 
   57720:       0f c6 c8 b1             shufps $0xb1,%xmm0,%xmm1 
   57737:       0f c6 c5 24             shufps $0x24,%xmm5,%xmm0 
   5773b:       0f c6 e8 81             shufps $0x81,%xmm0,%xmm5 
   57743:       0f c6 db 39             shufps $0x39,%xmm3,%xmm3 
   57747:       0f c6 f6 39             shufps $0x39,%xmm6,%xmm6 
   57752:       0f 11 69 24             movups %xmm5,0x24(%ecx) 
   60ea4:       0f c6 c9 00             shufps $0x0,%xmm1,%xmm1 
   60ee6:       0f c6 c2 00             shufps $0x0,%xmm2,%xmm0 
   60ef5:       0f c6 c0 02             shufps $0x2,%xmm0,%xmm0 
 
This is a BIG problem! (kivio, and kfiresaver3d have been verified to crash) 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13685