Adds compiler optimization.

libvm/Makefile

@@ -1,18 +1,19 @@
 
 CC = gcc
+CFLAGS=-O3
 
 all: explink expdump emulator as
 
 .PHONY: as clean run
 
 explink: explink.c
-	$(CC) -g -o bin/$@ $^
+	$(CC) -g -o bin/$@ $^ $(CFLAGS)
 
 expdump: expdump.c mnemonics.c disassembler.c
-	$(CC) -g -o bin/$@ $^
+	$(CC) -g -o bin/$@ $^ $(CFLAGS)
 
 emulator: emulator.c vm.c
-	$(CC) -g -o bin/$@ $^ -lSDL
+	$(CC) -g -o bin/$@ $^ -lSDL $(CFLAGS)
 
 as:
 	make -C as
@@ -22,7 +23,7 @@ test: exp
 	hexdump -C test.exp 
 
 run: test.exp
-	./bin/emulator -d $^
+	./bin/emulator -dV $^
 	
 %.exp: %.bin
 	./bin/explink -o $@ -c $^