2009-11-18 Alexandre Oliva <aoliva@redhat.com>
+ PR debug/41926
+ * tree-vect-loop.c (vect_loop_kill_debug_uses): New.
+ (vect_transform_loop): Call it.
+
+2009-11-18 Alexandre Oliva <aoliva@redhat.com>
+
* tree-ssa.c (insert_debug_temp_for_var_def): Fix handling of
released SSA names.
--- /dev/null
+/* PR debug/41926 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -g -ffast-math -funroll-loops -ftree-vectorize -msse2" { target { i?86-*-* x86_64-*-* } } } */
+
+void
+foo (double (*__restrict p)[4], double (*__restrict q)[4],
+ double *__restrict prim, double scale, double pp, double pq)
+{
+ int md, mc, mb, ma, p_index = 0;
+
+ for (md = 0; md < 1; md++)
+ for (mc = 0; mc < 1; mc++)
+ for (mb = 0; mb < 1; mb++)
+ for (ma = 0; ma < 4; ma++)
+ {
+ double tmp = scale * prim[p_index++];
+ p[md][ma] = p[md][ma] - tmp * pp;
+ q[mc][ma] = q[mc][ma] - tmp * pq;
+ }
+}
return true;
}
+/* Kill any debug uses outside LOOP of SSA names defined in STMT. */
+
+static void
+vect_loop_kill_debug_uses (struct loop *loop, gimple stmt)
+{
+ ssa_op_iter op_iter;
+ imm_use_iterator imm_iter;
+ def_operand_p def_p;
+ gimple ustmt;
+
+ FOR_EACH_PHI_OR_STMT_DEF (def_p, stmt, op_iter, SSA_OP_DEF)
+ {
+ FOR_EACH_IMM_USE_STMT (ustmt, imm_iter, DEF_FROM_PTR (def_p))
+ {
+ basic_block bb;
+
+ if (!is_gimple_debug (ustmt))
+ continue;
+
+ bb = gimple_bb (ustmt);
+
+ if (!flow_bb_inside_loop_p (loop, bb))
+ {
+ if (gimple_debug_bind_p (ustmt))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "killing debug use");
+
+ gimple_debug_bind_reset_value (ustmt);
+ update_stmt (ustmt);
+ }
+ else
+ gcc_unreachable ();
+ }
+ }
+ }
+}
+
/* Function vect_transform_loop.
The analysis phase has determined that the loop is vectorizable.
if (!STMT_VINFO_RELEVANT_P (stmt_info)
&& !STMT_VINFO_LIVE_P (stmt_info))
- continue;
+ {
+ if (MAY_HAVE_DEBUG_STMTS)
+ vect_loop_kill_debug_uses (loop, phi);
+ continue;
+ }
if ((TYPE_VECTOR_SUBPARTS (STMT_VINFO_VECTYPE (stmt_info))
!= (unsigned HOST_WIDE_INT) vectorization_factor)
if (!STMT_VINFO_RELEVANT_P (stmt_info)
&& !STMT_VINFO_LIVE_P (stmt_info))
{
+ if (MAY_HAVE_DEBUG_STMTS)
+ vect_loop_kill_debug_uses (loop, stmt);
gsi_next (&si);
continue;
}