Barrier instruction support.

src/include/core.h

@@ -7,6 +7,8 @@
 #include <string>
 #include <vector>
 #include <stack>
+#include <map>
+#include <set>
 
 #include "types.h"
 #include "archdef.h"
@@ -84,6 +86,7 @@ namespace Harp {
     Word interruptEntry;
 
     std::vector<Warp> w;
+    std::map<Word, std::set<Warp *> > b; // Barriers
   };
 
   class Warp {

src/include/instruction.h

@@ -31,7 +31,7 @@ namespace Harp {
                   JMPRT, LD, ST, LDI, RTOP, ANDP, ORP, XORP, NOTP, ISNEG, 
                   ISZERO, HALT, TRAP, JMPRU, SKEP, RETI, TLBRM,
                   ITOF, FTOI, FADD, FSUB, FMUL, FDIV, FNEG, WSPAWN,
-                  SPLIT, JOIN };
+                  SPLIT, JOIN, BAR };
     enum ArgClass {
       AC_NONE, AC_2REG, AC_2IMM, AC_3REG, AC_3PREG, AC_3IMM, AC_3REGSRC, 
       AC_1IMM, AC_1REG, AC_3IMMSRC, AC_PREG_REG, AC_2PREG, AC_2REGSRC