warning message to say why mismatches are ignored

Author: soheilshahrouz

vpr/src/base/read_place.cpp

@@ -107,9 +107,9 @@ void read_place_header(std::ifstream& placement_file,
         } else if (tokens[0][0] == '#') {
             continue; //Skip commented lines
 
-        } else if (tokens.size() == 4
-                   && tokens[0] == "Netlist_File:"
-                   && tokens[2] == "Netlist_ID:") {
+        } else if (tokens.size() == 4 &&
+                   tokens[0] == "Netlist_File:" &&
+                   tokens[2] == "Netlist_ID:") {
             //Check that the netlist used to generate this placement matches the one loaded
             //
             //NOTE: this is an optional check which causes no errors if this line is missing.
@@ -131,20 +131,23 @@ void read_place_header(std::ifstream& placement_file,
                     place_netlist_file.c_str(), place_netlist_id.c_str(),
                     net_file, cluster_ctx.clb_nlist.netlist_id().c_str());
                 if (verify_file_digests) {
+                    msg += " To ignore the packed netlist mismatch, use '--verify_file_digests off' command line option.";
                     vpr_throw(VPR_ERROR_PLACE_F, place_file, lineno, msg.c_str());
                 } else {
                     VTR_LOGF_WARN(place_file, lineno, "%s\n", msg.c_str());
+                    VTR_LOG_WARN("The packed netlist mismatch is ignored because"
+                                 "--verify_file_digests command line option is off.");
                 }
             }
 
             seen_netlist_id = true;
 
-        } else if (tokens.size() == 7
-                   && tokens[0] == "Array"
-                   && tokens[1] == "size:"
-                   && tokens[3] == "x"
-                   && tokens[5] == "logic"
-                   && tokens[6] == "blocks") {
+        } else if (tokens.size() == 7 &&
+                   tokens[0] == "Array" &&
+                   tokens[1] == "size:" &&
+                   tokens[3] == "x" &&
+                   tokens[5] == "logic" &&
+                   tokens[6] == "blocks") {
             //Load the device grid dimensions
 
             size_t place_file_width = vtr::atou(tokens[2]);
@@ -154,9 +157,12 @@ void read_place_header(std::ifstream& placement_file,
                     "Current FPGA size (%d x %d) is different from size when placement generated (%d x %d)",
                     grid.width(), grid.height(), place_file_width, place_file_height);
                 if (verify_file_digests) {
+                    msg += " To ignore this size mismatch, use '--verify_file_digests off' command line option.";
                     vpr_throw(VPR_ERROR_PLACE_F, place_file, lineno, msg.c_str());
                 } else {
                     VTR_LOGF_WARN(place_file, lineno, "%s\n", msg.c_str());
+                    VTR_LOG_WARN("The FPGA size mismatch is ignored because"
+                                 "--verify_file_digests command line option is off.");
                 }
             }
 
@@ -165,14 +171,17 @@ void read_place_header(std::ifstream& placement_file,
         } else {
             //Unrecognized
             auto msg = vtr::string_fmt(
-                "Invalid line '%s' in placement file header."
+                "Invalid line '%s' in placement file header. "
                 "Expected to see netlist filename and device size first.",
                 line.c_str());
 
             if (verify_file_digests) {
+                msg += " To ignore this unexpected line, use '--verify_file_digests off' command line option.";
                 vpr_throw(VPR_ERROR_PLACE_F, place_file, lineno, msg.c_str());
             } else {
                 VTR_LOGF_WARN(place_file, lineno, "%s\n", msg.c_str());
+                VTR_LOG_WARN("Unexpected line in the placement file header is ignored because"
+                             "--verify_file_digests command line option is off.");
             }
 
             if ((tokens.size() == 4 || (tokens.size() > 4 && tokens[4][0] == '#')) ||
@@ -226,7 +235,8 @@ void read_place_body(std::ifstream& placement_file,
         } else if (tokens[0][0] == '#') {
             continue; //Skip commented lines
 
-        } else if ((tokens.size() == 4 || (tokens.size() > 4 && tokens[4][0] == '#')) || (tokens.size() == 5 || (tokens.size() > 5 && tokens[5][0] == '#'))) {
+        } else if ((tokens.size() == 4 || (tokens.size() > 4 && tokens[4][0] == '#')) ||
+                   (tokens.size() == 5 || (tokens.size() > 5 && tokens[5][0] == '#'))) {
             //Load the block location
             //
             // If the place file corresponds to a 3D architecture, it should contain 5 tokens of actual data, with an optional 6th (commented) token indicating VPR's internal block number.
@@ -276,7 +286,10 @@ void read_place_body(std::ifstream& placement_file,
 
             //Check if block is listed multiple times with conflicting locations in constraints file
             if (seen_blocks[blk_id] > 0) {
-                if (block_x != place_ctx.block_locs[blk_id].loc.x || block_y != place_ctx.block_locs[blk_id].loc.y || sub_tile_index != place_ctx.block_locs[blk_id].loc.sub_tile || block_layer != place_ctx.block_locs[blk_id].loc.layer) {
+                if (block_x != place_ctx.block_locs[blk_id].loc.x ||
+                    block_y != place_ctx.block_locs[blk_id].loc.y ||
+                    sub_tile_index != place_ctx.block_locs[blk_id].loc.sub_tile ||
+                    block_layer != place_ctx.block_locs[blk_id].loc.layer) {
                     std::string cluster_name = cluster_ctx.clb_nlist.block_name(blk_id);
                     VPR_THROW(VPR_ERROR_PLACE,
                               "The location of cluster %s (#%d) is specified %d times in the constraints file with conflicting locations. \n"