@@ -3156,6 +3156,9 @@ expand_omp_for_generic (struct omp_regio
gphi *nphi;
gphi *exit_phi = psi.phi ();
+ if (virtual_operand_p (gimple_phi_result (exit_phi)))
+ continue;
+
edge l2_to_l3 = find_edge (l2_bb, l3_bb);
tree exit_res = PHI_ARG_DEF_FROM_EDGE (exit_phi, l2_to_l3);
@@ -3178,7 +3181,7 @@ expand_omp_for_generic (struct omp_regio
add_phi_arg (nphi, exit_res, l2_to_l0, UNKNOWN_LOCATION);
add_phi_arg (inner_phi, new_res, l0_to_l1, UNKNOWN_LOCATION);
- };
+ }
}
set_immediate_dominator (CDI_DOMINATORS, l2_bb,
@@ -0,0 +1,11 @@
+/* PR tree-optimization/83957 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -ftree-parallelize-loops=2 -fno-tree-dce --param parloops-schedule=dynamic" } */
+
+void
+foo (int *x, int y)
+{
+ if (y < 0)
+ for (; y < 1; ++y)
+ x = &y;
+}