* SSE fix 29 - simplify_subreg bug
@ 2002-10-27 13:42 Jan Hubicka
2002-10-29 7:51 ` Richard Henderson
0 siblings, 1 reply; 2+ messages in thread
From: Jan Hubicka @ 2002-10-27 13:42 UTC (permalink / raw)
To: gcc-patches, rth
Hi,
simd-5.c testcase produces crash on x86-64 because (subreg:V4SI
(const_int val)) with const_int in SImode is attempted to be produced
by parts. WHen doing 2nd part we end up with subreg outside the mode
and get trapped in sanity check.
Sun Oct 27 22:40:11 CET 2002 Jan Hubicka <jh@suse.cz>
* simplify-rtx.c (simplify_subreg): Fix const_int->vector subregging.
Index: simplify-rtx.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/simplify-rtx.c,v
retrieving revision 1.118.2.2
diff -c -3 -p -r1.118.2.2 simplify-rtx.c
*** simplify-rtx.c 23 Oct 2002 15:48:21 -0000 1.118.2.2
--- simplify-rtx.c 27 Oct 2002 21:39:55 -0000
*************** simplify_subreg (outermode, op, innermod
*** 2351,2357 ****
/* This might fail, e.g. if taking a subreg from a SYMBOL_REF. */
/* ??? It would be nice if we could actually make such subregs
on targets that allow such relocations. */
! elt = simplify_subreg (submode, op, innermode, byte);
if (! elt)
return NULL_RTX;
RTVEC_ELT (v, i) = elt;
--- 2351,2360 ----
/* This might fail, e.g. if taking a subreg from a SYMBOL_REF. */
/* ??? It would be nice if we could actually make such subregs
on targets that allow such relocations. */
! if (byte >= GET_MODE_UNIT_SIZE (innermode))
! elt = CONST0_RTX (submode);
! else
! elt = simplify_subreg (submode, op, innermode, byte);
if (! elt)
return NULL_RTX;
RTVEC_ELT (v, i) = elt;
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: SSE fix 29 - simplify_subreg bug
2002-10-27 13:42 SSE fix 29 - simplify_subreg bug Jan Hubicka
@ 2002-10-29 7:51 ` Richard Henderson
0 siblings, 0 replies; 2+ messages in thread
From: Richard Henderson @ 2002-10-29 7:51 UTC (permalink / raw)
To: Jan Hubicka; +Cc: gcc-patches
On Sun, Oct 27, 2002 at 10:42:46PM +0100, Jan Hubicka wrote:
> * simplify-rtx.c (simplify_subreg): Fix const_int->vector subregging.
Ok.
r~
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-10-27 13:42 SSE fix 29 - simplify_subreg bug Jan Hubicka
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