Make sure dead blocks will be reached by irg_block_walk()

[libfirm] / ir / ir / irflag.c

diff --git a/ir/ir/irflag.c b/ir/ir/irflag.c
index a72b262..eebca75 100644 (file)
--- a/ir/ir/irflag.c
+++ b/ir/ir/irflag.c
@@ -38,7 +38,9 @@ optimization_state_t libFIRM_opt =
   ENABLE(OPT_INLINE)                             |
   ENABLE(OPT_DYN_METH_DISPATCH)                  |
   ENABLE(OPT_NORMALIZE)                          |
-  ENABLE(OPT_TAIL_RECURSION);
+  ENABLE(OPT_TAIL_RECURSION)                     |
+  ENABLE(OPT_PRECISE_EXC_CONTEXT)                |
+  0;
 
 /* set the flags with set_flagname, get the flag with get_flagname */
 void set_opt_cse (int value)
@@ -197,6 +199,17 @@ void set_opt_tail_recursion(int value)
     libFIRM_opt &= ~OPT_TAIL_RECURSION;
 }
 
+/* Enable/Disable precise exception context. */
+void set_opt_precise_exc_context(int value)
+{
+#if PRECISE_EXC_CONTEXT
+  if (value)
+    libFIRM_opt |= OPT_PRECISE_EXC_CONTEXT;
+  else
+    libFIRM_opt &= ~OPT_PRECISE_EXC_CONTEXT;
+#endif
+}
+
 /* Save the current optimization state. */
 void save_optimization_state(optimization_state_t *state)
 {