------- Comment #4 from rguenth at gcc dot gnu dot org 2007-09-27 10:17 -------
Created an attachment (id=14254)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14254&action=view)
restore DCE of killing defs
some ssa updating is broken in dce though:
/space/rguenther/src/svn/pointer_plus/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c:
In function 'f':
/space/rguenther/src/svn/pointer_plus/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c:5:
error: type mismatch between an SSA_NAME and its symbol
/space/rguenther/src/svn/pointer_plus/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c:5:
error: in statement
# SFT.1_12 = VDEF <SFT.1_11> { SFT.1 }
REALPART_EXPR <t> = 2;
/space/rguenther/src/svn/pointer_plus/gcc/testsuite/gcc.dg/tree-ssa/complex-4.c:5:
internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
but dceloop now removes the dead store and we get:
f ()
{
complex int t;
int D.1551;
<bb 2>:
# SFT.1_12 = VDEF <SFT.1_11>
REALPART_EXPR <t> = 2;
# SFT.0_13 = VDEF <SFT.0_10>
IMAGPART_EXPR <t> = 2;
# SFT.0_14 = VDEF <SFT.0_13>
# SFT.1_15 = VDEF <SFT.1_12>
D.1551_5 = g (&t);
return D.1551_5;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33562
