dbg: Remove the unused macro 'DBG_OPT_POLY()' and its then unused enum entry 'dbg_rem_poly_call'.

include/libfirm/dbginfo.h

@@ -63,7 +63,6 @@ typedef enum {
 	                                   after read optimization. */
 	dbg_read_a_const,             /**< A Firm subgraph was replaced because of a read
 	                                   a constant optimization. */
-	dbg_rem_poly_call,            /**< Remove polymorphic call. */
 	dbg_dead_code,                /**< Removing unreachable code, i.e. blocks that are never executed. */
 	dbg_opt_confirm,              /**< A Firm subgraph was replace because of a Confirmation. */
 	dbg_gvn_pre,                  /**< A Firm node was replace because of the GVN-PRE algorithm. */

ir/ir/dbginfo.c

@@ -45,7 +45,6 @@ const char *dbg_action_2_str(dbg_action a)
 	CASE(dbg_read_after_write);
 	CASE(dbg_read_after_read);
 	CASE(dbg_read_a_const);
-	CASE(dbg_rem_poly_call);
 	CASE(dbg_dead_code);
 	CASE(dbg_opt_confirm);
 	CASE(dbg_gvn_pre);

ir/opt/iropt_dbg.h

@@ -285,22 +285,6 @@
 	  __dbg_info_merge_sets(&n, 1, ons, ARRAY_SIZE(ons), dbg_opt_cse); \
 	} while(0)
 
-/**
- * Merge the debug info due to polymorphic call optimization.
- * A Sel node was replaced by a constant.
- *
- * @param sel   the Sel node that will be replaced.
- * @param c     the constant node that replaces sel
- */
-#define DBG_OPT_POLY(sel, c)                                                 \
-	do {                                                                     \
-	  ir_node *ons[3];                                                       \
-	  ons[0] = sel;                                                          \
-	  ons[1] = skip_Proj(get_Sel_ptr(sel));                                  \
-	  ons[2] = c;                                                            \
-	  __dbg_info_merge_sets(&c, 1, ons, ARRAY_SIZE(ons), dbg_rem_poly_call); \
-	} while(0)
-
 /**
  * A node was replaced by another node due to a Confirmation.
  *