[PATCH 2/8] add helper add_load_dominators()

[Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>]

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
 flow.c | 12 ++++++++++++
 flow.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/flow.c b/flow.c
index 50507a5e7..25a5bffbe 100644
--- a/flow.c
+++ b/flow.c
@@ -417,6 +417,18 @@ void add_dominator(struct pseudo_list **phi_list, struct instruction *insn,
 	use_pseudo(insn, phi, add_pseudo(phi_list, phi));
 }
 
+struct pseudo_list *add_load_dominators(struct instruction *insn, struct instruction_list *doms,
+	struct ident *ident)
+{
+	struct pseudo_list *phi_list = NULL;
+	struct instruction *dom;
+
+	FOR_EACH_PTR(doms, dom) {
+		add_dominator(&phi_list, insn, dom, ident);
+	} END_FOR_EACH_PTR(dom);
+	return phi_list;
+}
+
 /*
  * We should probably sort the phi list just to make it easier to compare
  * later for equality. 
diff --git a/flow.h b/flow.h
index 800585547..a6d0881c2 100644
--- a/flow.h
+++ b/flow.h
@@ -39,6 +39,7 @@ void check_access(struct instruction *insn);
 void convert_load_instruction(struct instruction *, pseudo_t);
 void rewrite_load_instruction(struct instruction *, struct pseudo_list *);
 void add_dominator(struct pseudo_list **, struct instruction *, struct instruction *, struct ident*);
+struct pseudo_list *add_load_dominators(struct instruction *, struct instruction_list *, struct ident*);
 int dominates(pseudo_t pseudo, struct instruction *insn, struct instruction *dom, int local);
 
 extern void clear_liveness(struct entrypoint *ep);
-- 
2.12.0

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