There's actually a chance that, correctly stringified, this will work

1 files changed, 14 insertions, 5 deletions

diff --git a/ir.h b/ir.h
index e732a3d..5d92eed 100644
--- a/ir.h
+++ b/ir.h
@@ -26,6 +26,7 @@ enum instype {
 	INS_RET,   // return
 	INS_RETV,  // return r1
 	INS_MOV,   // r0 = r1
+	INS_BRK,   // halt
 };
 
 enum condcode {
@@ -64,8 +65,11 @@ struct ref {
 
 struct irins {
 	enum instype type;
-	struct ref r0, r1, r2;
-	char *name;
+	union {
+		struct ref three_refs[3];
+		struct {struct ref r0, r1, r2;};
+	};
+	const char *name;  // should be a return value from ir_str()
 	enum condcode condcode;
 };
 
@@ -82,22 +86,27 @@ void ir_delete(struct ir *ir);
 void ir_print(struct ir *ir, FILE *f);
 void irins_print(struct irins *ins, FILE *f);
 
+const char* ir_str(const char *str);  // returns interned string
+
 // returns offset in .data segment
 struct ref ir_reserve_global(struct ir *ir, int size);
 
+void ir_insert_before(struct ir *ir, int pos, struct irins *ins);
 void ir_append(struct ir *ir, struct irins *ins);
 
 struct irins* irins_make(enum instype type);
-struct irins* irins_make_name(enum instype type, char *name);
+struct irins* irins_make_name(enum instype type, const char *name);
 struct irins* irins_make_0(enum instype type, struct ref r0);
 struct irins* irins_make_01(enum instype type, struct ref r0, struct ref r1);
 struct irins* irins_make_012(enum instype type, struct ref r0, struct ref r1, struct ref r2);
 struct irins* irins_make_1(enum instype type, struct ref r1);
 struct irins* irins_make_12(enum instype type, struct ref r1, struct ref r2);
-struct irins* irins_make_jcc(char *name, enum condcode condcode);
+struct irins* irins_make_jcc(const char *name, enum condcode condcode);
 void irins_delete(struct irins *ins);
 
-char* gen_label_name(void);
+void irins_which_refs(const struct irins *ins, bool haveref[3]);
+
+const char* gen_label_name(void);
 
 struct ref ref_reg(int reg);
 struct ref ref_mem(int reg, int offset, enum refrel rel);