pragma once instead header guards

Author: soheilshahrouz

vpr/src/route/router_lookahead/router_lookahead.h

@@ -1,5 +1,5 @@
-#ifndef VPR_ROUTER_LOOKAHEAD_H
-#define VPR_ROUTER_LOOKAHEAD_H
+#pragma once
+
 #include <memory>
 #include "vpr_types.h"
 #include "vpr_error.h"
@@ -176,5 +176,3 @@ class NoOpLookahead : public RouterLookahead {
         return -1.;
     }
 };
-
-#endif

vpr/src/route/rr_graph_generation/build_switchblocks.h

@@ -1,5 +1,4 @@
-#ifndef BUILD_SWITCHBLOCKS_H
-#define BUILD_SWITCHBLOCKS_H
+#pragma once
 
 #include <unordered_map>
 #include <vector>
@@ -131,5 +130,3 @@ t_sb_connection_map* alloc_and_load_switchblock_permutations(const t_chan_detail
  *  @param sb_conns switch block permutation map
  */
 void free_switchblock_permutations(t_sb_connection_map* sb_conns);
-
-#endif

vpr/src/route/rr_graph_generation/cb_metrics.h

@@ -1,5 +1,4 @@
-#ifndef CB_METRICS_H
-#define CB_METRICS_H
+#pragma once
 
 #include <vector>
 #include <set>
@@ -99,5 +98,3 @@ void analyze_conn_blocks(const int***** opin_cb, const int***** ipin_cb, const t
 void make_poor_cb_pattern(const e_pin_type pin_type, const t_physical_tile_type_ptr block_type, const int* Fc_array, const t_chan_width* chan_width_inf, int***** cb);
 
 /**** END EXPERIMENTAL ****/
-
-#endif /*CB_METRICS_H*/

vpr/src/route/rr_graph_generation/clock_connection_builders.h

@@ -1,5 +1,4 @@
-#ifndef CLOCK_CONNECTION_BUILDERS_H
-#define CLOCK_CONNECTION_BUILDERS_H
+#pragma once
 
 #include <string>
 
@@ -113,5 +112,3 @@ class ClockToPinsConnection : public ClockConnection {
     void create_switches(const ClockRRGraphBuilder& clock_graph, t_rr_edge_info_set* rr_edges_to_create) override;
     size_t estimate_additional_nodes() override;
 };
-
-#endif

vpr/src/route/rr_graph_generation/clock_fwd.h

@@ -1,10 +1,7 @@
-#ifndef CLOCK_FWD
-#define CLOCK_FWD
+#pragma once
 
 struct Coordinates {
     int x = -1;
     int y = -1;
     int layer = -1;
 };
-
-#endif

vpr/src/route/rr_graph_generation/clock_network_builders.h

@@ -1,5 +1,4 @@
-#ifndef CLOCK_NETWORK_BUILDERS_H
-#define CLOCK_NETWORK_BUILDERS_H
+#pragma once
 
 #include <string>
 #include <vector>
@@ -281,5 +280,3 @@ class ClockHTree : private ClockNetwork {
                                                              int num_segments_x) override;
     size_t estimate_additional_nodes(const DeviceGrid& grid) override;
 };
-
-#endif

vpr/src/route/rr_graph_generation/rr_graph.h

@@ -1,5 +1,4 @@
-#ifndef RR_GRAPH_H
-#define RR_GRAPH_H
+#pragma once
 
 /* Include track buffers or not. Track buffers isolate the tracks from the
  * input connection block. However, they are difficult to lay out in practice,
@@ -62,5 +61,3 @@ bool pins_connected(t_block_loc cluster_loc,
                     t_logical_block_type_ptr logical_block,
                     int from_pin_logical_num,
                     int to_pin_logical_num);
-
-#endif

vpr/src/route/rr_graph_generation/rr_graph_area.h

@@ -1,5 +1,4 @@
-#ifndef RR_GRAPH_AREA_H
-#define RR_GRAPH_AREA_H
+#pragma once
 
 void count_routing_transistors(enum e_directionality directionality,
                                int num_switch,
@@ -10,5 +9,3 @@ void count_routing_transistors(enum e_directionality directionality,
                                bool is_flat);
 
 float trans_per_buf(float Rbuf, float R_minW_nmos, float R_minW_pmos);
-
-#endif

vpr/src/route/rr_graph_generation/rr_graph_clock.h

@@ -1,5 +1,4 @@
-#ifndef RR_GRAPH_CLOCK_H
-#define RR_GRAPH_CLOCK_H
+#pragma once
 
 #include <string>
 #include <vector>
@@ -156,5 +155,3 @@ class ClockRRGraphBuilder {
     int chanx_ptc_idx_;
     int chany_ptc_idx_;
 };
-
-#endif

vpr/src/route/rr_graph_generation/rr_graph_indexed_data.h

@@ -1,8 +1,6 @@
-#ifndef RR_GRAPH_INDEXED_DATA_H
-#define RR_GRAPH_INDEXED_DATA_H
+#pragma once
+
 #include "physical_types.h"
 #include "alloc_and_load_rr_indexed_data.h"
 
 void load_rr_index_segments(const int num_segment);
-
-#endif

vpr/src/route/rr_graph_generation/rr_graph_sbox.h

@@ -1,5 +1,4 @@
-#ifndef RR_GRAPH_SBOX_H
-#define RR_GRAPH_SBOX_H
+#pragma once
 
 #include <vector>
 
@@ -16,6 +15,9 @@ vtr::NdMatrix<std::vector<int>, 3> alloc_and_load_switch_block_conn(t_chan_width
                                                                     enum e_switch_block_type switch_block_type,
                                                                     int Fs);
 
-int get_simple_switch_block_track(enum e_side from_side, enum e_side to_side, int from_track, enum e_switch_block_type switch_block_type, const int from_chan_width, const int to_chan_width);
-
-#endif
+int get_simple_switch_block_track(enum e_side from_side,
+                                  enum e_side to_side,
+                                  int from_track,
+                                  enum e_switch_block_type switch_block_type,
+                                  const int from_chan_width,
+                                  const int to_chan_width);

vpr/src/route/rr_graph_generation/rr_graph_timing_params.h

@@ -1 +1,3 @@
+#pragma once
+
 void add_rr_graph_C_from_switches(float C_ipin_cblock);

vpr/src/route/rr_graph_generation/rr_types.h

@@ -1,5 +1,4 @@
-#ifndef RR_TYPES_H
-#define RR_TYPES_H
+#pragma once
 
 #include <vector>
 #include "vtr_ndmatrix.h"
@@ -182,5 +181,3 @@ typedef vtr::NdMatrix<t_chan_seg_details, 3> t_chan_details;
  * [0..3 (To side)][0...max_chan_width][0..3 (to_mux,to_trac,alt_mux,alt_track)]
  * originally initialized to UN_SET until alloc_and_load_sb is called */
 typedef vtr::NdMatrix<short, 6> t_sblock_pattern;
-
-#endif