floating point support fixes

hw/rtl/interfaces/VX_decode_if.v

@@ -12,7 +12,7 @@ interface VX_decode_if ();
     wire [31:0]             next_PC;   
 
     wire [`EX_BITS-1:0]     ex_type;    
-    wire [`OP_BITS-1:0]     instr_op; 
+    wire [`OP_BITS-1:0]     ex_op; 
 
     wire [`NR_BITS-1:0]     rd;
     wire [`NR_BITS-1:0]     rs1;

hw/rtl/interfaces/VX_wb_if.v

@@ -7,7 +7,12 @@ interface VX_wb_if ();
 
     wire                            valid;
     wire [`NUM_THREADS-1:0]         thread_mask;
-    wire [`NW_BITS-1:0]             warp_num;     
+    wire [`NW_BITS-1:0]             warp_num; 
+
+`IGNORE_WARNINGS_BEGIN
+    wire [31:0]                     curr_PC;
+`IGNORE_WARNINGS_END
+
     wire [`NR_BITS-1:0]             rd;
     wire                            rd_is_fp;
     wire [`NUM_THREADS-1:0][31:0]	data;