logger: Add -check-expected subcommand.

This allows us to have multiple "expect this warning" calls in a single
long script, covering only as many passes as necessary.

1 files changed, 9 insertions, 0 deletions

diff --git a/passes/cmds/logger.cc b/passes/cmds/logger.cc
index d06939c2e..ec92f1d01 100644
--- a/passes/cmds/logger.cc
+++ b/passes/cmds/logger.cc
@@ -64,6 +64,11 @@ struct LoggerPass : public Pass {
 		log("    -expect-no-warnings\n");
 		log("        gives error in case there is at least one warning that is not expected.\n");
 		log("\n");
+		log("    -check-expected\n");
+		log("        verifies that the patterns previously set up by -expect have actually\n");
+		log("        been met, then clears the expected log list.  If this is not called\n");
+		log("        manually, the check will happen at yosys exist time instead.\n");
+		log("\n");
 	}
 
 	void execute(std::vector<std::string> args, RTLIL::Design * design) override
@@ -176,6 +181,10 @@ struct LoggerPass : public Pass {
 				log_expect_no_warnings = true;
 				continue;
 			}
+			if (args[argidx] == "-check-expected") {
+				log_check_expected();
+				continue;
+			}
 			break;
 		}
 		extra_args(args, argidx, design, false);