abort if switch gets too big

[r16854]

diff --git a/ir/be/ia32/ia32_transform.c b/ir/be/ia32/ia32_transform.c
index 923c76e..a70c52e 100644 (file)
--- a/ir/be/ia32/ia32_transform.c
+++ b/ir/be/ia32/ia32_transform.c
@@ -2286,6 +2286,7 @@ static ir_node *create_Switch(ir_node *node)
        ir_node  *sel        = get_Cond_selector(node);
        ir_node  *new_sel    = be_transform_node(sel);
        int       switch_min = INT_MAX;
+       int       switch_max = INT_MIN;
        long      default_pn = get_Cond_defaultProj(node);
        ir_node  *new_node;
        const ir_edge_t *edge;
@@ -2301,6 +2302,12 @@ static ir_node *create_Switch(ir_node *node)
 
                if(pn < switch_min)
                        switch_min = pn;
+               if(pn > switch_max)
+                       switch_max = pn;
+       }
+
+       if((unsigned) (switch_max - switch_min) > 256000) {
+               panic("Size of switch %+F bigger than 256000", node);
        }
 
        if (switch_min != 0) {