toplev.c (rest_of_compilation): Call split_all_insns before regstack if optimizing but not scheduling after reload.

	* toplev.c (rest_of_compilation): Call split_all_insns before
	regstack if optimizing but not scheduling after reload.

	* gcc.c-torture/compile/20030904-1.c: New test.

From-SVN: r71203

4 files changed, 120 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f5cb771..5582bc2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2003-09-08  Jakub Jelinek  <jakub@redhat.com>
 
+	* toplev.c (rest_of_handle_stack_regs): Call split_all_insns before
+	regstack if optimizing but not scheduling after reload.
+
+2003-09-08  Jakub Jelinek  <jakub@redhat.com>
+
 	* config/sparc/sparc.c (struct machine_function): New type.
 	(TARGET_HAVE_TLS, TARGET_CANNOT_FORCE_CONST_MEM): Define.
 	(sparc_override_options): Initialize init_machine_status.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3ee1a76..032e090 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2003-09-08  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.c-torture/compile/20030904-1.c: New test.
+
 2003-09-07  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* g++.dg/opt/longbranch2.C: New test.
diff --git a/gcc/testsuite/gcc.c-torture/compile/20030904-1.c b/gcc/testsuite/gcc.c-torture/compile/20030904-1.c
new file mode 100644
index 0000000..09fd015
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/20030904-1.c
@@ -0,0 +1,94 @@
+struct A
+{
+  long a1;
+  double *a2;
+};
+
+struct B
+{
+  void *b1;
+  double b2, b3;
+  struct
+  {
+    int d1;
+    double d2;
+  } b4;
+};
+
+struct C
+{
+  struct A *c1;
+  void *c2;
+};
+
+long fn1 (struct A *, double);
+void fn2 (void *, const char *);
+double fn3 (double);
+double fn4 (double);
+int fn5 (void *, double, double);
+
+int
+foo (struct B *x)
+{
+  struct C *e = x->b1;
+  struct A *f = e->c1;
+  long g, h, i;
+  double *j, k;
+  g = fn1 (f, 0.5 * (x->b2 + x->b3)), h = g + 1, i = f->a1;
+  j = f->a2, k = x->b4.d2;
+  fn2 (x, "something");
+  if (g <= 0)
+    {
+      double l = j[2] - j[1];
+      if (l > 0.0 && l <= 0.02)
+        k = (x->b4.d1 == 1
+             ? ((1.0 / l) < 25 ? 25 : (1.0 / l))
+             : fn3 ((1.0 / l) < 25 ? 25 : (1.0 / l)));
+    }
+  else
+    {
+      double m = j[h] - j[g], n = 0.0, l = 0.0;
+      if (g > 1)
+        n = j[g] - j[g - 1];
+      if (h < i)
+        l = j[h + 1] - j[h];
+      if (n > 0.02)
+        n = 0;
+      if (m > 0.02)
+        m = 0;
+      if (l > 0.02)
+        l = 0;
+      if (m < n)
+        {
+          double o = m;
+          m = n;
+          n = o;
+        }
+      if (l < n)
+        {
+          double o = l;
+          l = n;
+          n = o;
+        }
+      if (l < m)
+        {
+          double o = l;
+          l = m;
+          m = o;
+        }
+      if (n != 0.0)
+        k = (x->b4.d1 == 1
+             ? ((1 / m) < 25 ? 25 : (1 / m))
+             : fn3 ((1 / m) < 25 ? 25 : (1 / m)));
+      else if (m != 0.0)
+        k = (x->b4.d1 == 1
+             ? ((2 / (m + l)) < 25 ? 25 : (2 / (m + l)))
+             : fn3 ((2 / (m + l)) < 25 ? 25 : (2 / (m + l))));
+      else if (l != 0.0)
+        k = (x->b4.d1 == 1
+             ? ((1 / l) < 25 ? 25 : (1 / l))
+             : fn3 ((1 / l) < 25 ? 25 : (1 / l)));
+    }
+  fn5 (e->c2, 0.5 * (x->b2 + x->b3), (x->b4.d1 == 1 ? k : fn4 (k)));
+  return 1;
+}
diff --git a/gcc/toplev.c b/gcc/toplev.c
index aa04138..bcc9c50 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -2082,6 +2082,23 @@ rest_of_handle_delay_slots (tree decl, rtx insns)
 static void
 rest_of_handle_stack_regs (tree decl, rtx insns)
 {
+#if defined (HAVE_ATTR_length)
+  /* If flow2 creates new instructions which need splitting
+     and scheduling after reload is not done, they might not be
+     splitten until final which doesn't allow splitting
+     if HAVE_ATTR_length.  */
+#ifdef INSN_SCHEDULING
+  if (optimize && !flag_schedule_insns_after_reload)
+#else
+  if (optimize)
+#endif
+    {
+      timevar_push (TV_SHORTEN_BRANCH);
+      split_all_insns (1);
+      timevar_pop (TV_SHORTEN_BRANCH);
+    }
+#endif
+
   timevar_push (TV_REG_STACK);
   open_dump_file (DFI_stack, decl);