[PATCH] Fix PR51070 (again)

[Richard Guenther]

This fixes another piece of PR51070 - 
stmt_has_scalar_dependences_outside_loop was not handling calls.

Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.

Richard.

2012-01-03  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/51070
        * tree-loop-distribution.c (stmt_has_scalar_dependences_outside_loop):
        Properly handle calls.

        * gcc.dg/torture/pr51070-2.c: New testcase.

Index: gcc/tree-loop-distribution.c
===================================================================
--- gcc/tree-loop-distribution.c        (revision 182829)
+++ gcc/tree-loop-distribution.c        (working copy)
@@ -89,8 +89,9 @@ stmt_has_scalar_dependences_outside_loop
 
   switch (gimple_code (stmt))
     {
+    case GIMPLE_CALL:
     case GIMPLE_ASSIGN:
-      name = gimple_assign_lhs (stmt);
+      name = gimple_get_lhs (stmt);
       break;
 
     case GIMPLE_PHI:
@@ -101,8 +102,10 @@ stmt_has_scalar_dependences_outside_loop
       return false;
     }
 
-  return TREE_CODE (name) == SSA_NAME
-    && ssa_name_has_uses_outside_loop_p (name, loop_containing_stmt (stmt));
+  return (name
+         && TREE_CODE (name) == SSA_NAME
+         && ssa_name_has_uses_outside_loop_p (name,
+                                              loop_containing_stmt (stmt)));
 }
 
 /* Update the PHI nodes of NEW_LOOP.  NEW_LOOP is a duplicate of
Index: gcc/testsuite/gcc.dg/torture/pr51070-2.c
===================================================================
--- gcc/testsuite/gcc.dg/torture/pr51070-2.c    (revision 0)
+++ gcc/testsuite/gcc.dg/torture/pr51070-2.c    (revision 0)
@@ -0,0 +1,35 @@
+/* { dg-do compile } */
+/* { dg-options "-fno-inline" } */
+
+int
+func_4 (int si1, int si2)
+{
+  return si1;
+}
+
+int
+func_14 (int left, int right)
+{
+  return 1;
+}
+
+int
+func_37 (int left, int right)
+{
+  return left;
+}
+
+int g_92[1024];
+int g_95[1024];
+int g_224;
+int g_352[1024];
+int
+func_9 ()
+{
+  for (; g_224; g_224 += 1)
+    {
+      g_95[0] = func_4 (func_37 (g_92[g_224], 0), 0);
+      g_92[g_224] = 0, g_352[g_224] = func_14 (0, 0);
+    }
+  return 0;
+}