1 files changed, 68 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr42250.c b/gcc/testsuite/gcc.dg/pr42250.c
new file mode 100644
index 000000000..3ba8e8413
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr42250.c
@@ -0,0 +1,68 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fipa-struct-reorg" } */
+
+extern double log10 (double __x);
+extern double ceil (double __x);
+extern double floor (double __x);
+extern void free (void *__ptr);
+extern void *my_malloc (unsigned int);
+extern int num_rr_nodes;
+static float get_cblock_trans (int *num_inputs_to_cblock,
+			       int max_inputs_to_cblock,
+			       float trans_cblock_to_lblock_buf,
+			       float trans_sram_bit);
+static float trans_per_mux (int num_inputs, float trans_sram_bit);
+void
+count_routing_transistors (int num_switch, float R_minW_nmos,
+			   float R_minW_pmos)
+{
+  int *num_inputs_to_cblock;
+  int iswitch, i, j, iseg, max_inputs_to_cblock;
+  float input_cblock_trans;
+  const float trans_sram_bit = 6.;
+  float trans_cblock_to_lblock_buf;
+  input_cblock_trans =
+    get_cblock_trans (num_inputs_to_cblock, max_inputs_to_cblock,
+		      trans_cblock_to_lblock_buf, trans_sram_bit);
+}
+
+static float
+get_cblock_trans (int *num_inputs_to_cblock, int max_inputs_to_cblock,
+		  float trans_cblock_to_lblock_buf, float trans_sram_bit)
+{
+  float *trans_per_cblock;
+  float trans_count;
+  int i, num_inputs;
+
+  trans_per_cblock =
+    (float *) my_malloc ((max_inputs_to_cblock + 1) * sizeof (float));
+  for (i = 1; i <= max_inputs_to_cblock; i++)
+    trans_per_cblock[i] =
+      trans_per_mux (i, trans_sram_bit) + trans_cblock_to_lblock_buf;
+  for (i = 0; i < num_rr_nodes; i++)
+    {
+      num_inputs = num_inputs_to_cblock[i];
+      trans_count += trans_per_cblock[num_inputs];
+    }
+  free (trans_per_cblock);
+  return (trans_count);
+}
+
+static float
+trans_per_mux (int num_inputs, float trans_sram_bit)
+{
+  int nlevels, ilevel, current_inps;
+  float ntrans = 0;
+
+  if (num_inputs <= 1)
+    return (0);
+  nlevels = ceil (log10 (num_inputs) / log10 (2.) - 0.00001);
+  current_inps = num_inputs;
+  for (ilevel = 1; ilevel <= nlevels; ilevel++)
+    {
+      ntrans += 2 * floor (current_inps / 2.);
+      current_inps = ceil (current_inps / 2.);
+    }
+  ntrans += trans_sram_bit * nlevels;
+  return (ntrans);
+}