Add --drop-edges command line argument

Author: kpamnany

base/options.jl

@@ -63,6 +63,7 @@ struct JLOptions
     task_metrics::Int8
     timeout_for_safepoint_straggler_s::Int16
     serialize_machine_code_only::Int8
+    drop_edges::Int8
 end
 
 # This runs early in the sysimage != is not defined yet

src/jloptions.c

@@ -96,6 +96,7 @@ JL_DLLEXPORT void jl_init_options(void)
                         0, // task_metrics
                         25, // timeout_for_safepoint_straggler_s
                         0, // serialize_machine_code_only
+                        0, // drop_edges
     };
     jl_options_initialized = 1;
 }
@@ -247,6 +248,7 @@ JL_DLLEXPORT void jl_parse_opts(int *argcp, char ***argvp)
            opt_inline,
            opt_polly,
            opt_serialize_machine_code_only,
+           opt_drop_edges,
            opt_timeout_for_safepoint_straggler,
            opt_trace_compile,
            opt_trace_compile_timing,
@@ -328,6 +330,7 @@ JL_DLLEXPORT void jl_parse_opts(int *argcp, char ***argvp)
         { "inline",          required_argument, 0, opt_inline },
         { "polly",           required_argument, 0, opt_polly },
         { "serialize-machine-code-only", no_argument, 0, opt_serialize_machine_code_only },
+        { "drop-edges", no_argument, 0, opt_drop_edges },
         { "timeout-for-safepoint-straggler", required_argument, 0, opt_timeout_for_safepoint_straggler },
         { "trace-compile",   required_argument, 0, opt_trace_compile },
         { "trace-compile-timing",  no_argument, 0, opt_trace_compile_timing },
@@ -899,6 +902,9 @@ JL_DLLEXPORT void jl_parse_opts(int *argcp, char ***argvp)
         case opt_serialize_machine_code_only:
             jl_options.serialize_machine_code_only = 1;
             break;
+        case opt_drop_edges:
+            jl_options.drop_edges = 1;
+            break;
         case opt_task_metrics:
             if (!strcmp(optarg, "no"))
                 jl_options.task_metrics = JL_OPTIONS_TASK_METRICS_OFF;

src/jloptions.h

@@ -67,6 +67,7 @@ typedef struct {
     int8_t task_metrics;
     int16_t timeout_for_safepoint_straggler_s;
     int8_t serialize_machine_code_only;
+    int8_t drop_edges;
 } jl_options_t;
 
 #endif

test/cmdlineargs.jl

@@ -1137,3 +1137,8 @@ end
     exename = `$(Base.julia_cmd())`
     @test parse(Int,read(`$exename --serialize-machine-code-only -E "Base.JLOptions().serialize_machine_code_only"`, String)) == 1
 end
+
+@testset "--drop-edges" begin
+    exename = `$(Base.julia_cmd())`
+    @test parse(Int,read(`$exename --drop-edges -E "Base.JLOptions().drop_edges`, String)) == 1
+end