[patch tree-eh]: Fix bootstrap issue for libjava for 32-bit mingw target

[Kai Tietz]

Hi,

the following patch fixes a bootstrap issue for libjava (compile of
verify.cc ICEs).  It is caused by the assumption that a GIMPLE_COND
lhs side has always a type.  This isn't necessarily true, but it has
by default boolean_type_node as type.


ChangeLog

2012-01-25  Kai Tietz  <kti...@redhat.com>

        * tree-eh.c (stmt_could_throw_1_p): If type of lhs for a GIMPLE_COND
        isn't set, use boolean_type_node.

Bootstrapped for x86_64-unknown-linux-gnu, and i686-w64-mingw32.  Ok for apply?

Regards,
Kai

Index: tree-eh.c
===================================================================
--- tree-eh.c   (revision 183524)
+++ tree-eh.c   (working copy)
@@ -2583,9 +2583,14 @@
          && TREE_CODE_CLASS (code) == tcc_comparison)
        t = TREE_TYPE (gimple_assign_rhs1 (stmt));
       else if (gimple_code (stmt) == GIMPLE_COND)
-       t = TREE_TYPE (gimple_cond_lhs (stmt));
+       {
+         t = TREE_TYPE (gimple_cond_lhs (stmt));
+         if (t == NULL_TREE)
+           t = boolean_type_node;
+       }
       else
-       t = gimple_expr_type (stmt);
+        t = gimple_expr_type (stmt);
+
       fp_operation = FLOAT_TYPE_P (t);
       if (fp_operation)
        {