Allow specifying arbitrary MJIT flags by --jit-debug

This is a secret feature for me. It's only for testing and any behavior
with this flag override is unsupported.

I needed this because I sometimes want to add debug options but do not
want to disable optimizations, for using Linux perf.

1 files changed, 2 insertions, 0 deletions

diff --git a/mjit.h b/mjit.h
index e89a2b9a6f..ff16c0fca4 100644
--- a/mjit.h
+++ b/mjit.h
@@ -43,6 +43,8 @@ struct mjit_options {
     // Disable compiler optimization and add debug symbols. It can be
     // very slow.
     char debug;
+    // Add arbitrary cflags.
+    char* debug_flags;
     // If not 0, all ISeqs are synchronously compiled. For testing.
     unsigned int wait;
     // Number of calls to trigger JIT compilation. For testing.