honor suppress_environment_warnings for Zen warning

fixes #3818

src/PerfCounters_x86.h

@@ -344,10 +344,12 @@ static void check_for_zen_speclockmap() {
  LOG(debug) << "SpecLockMap is disabled";
  } else {
  LOG(debug) << "SpecLockMap is not disabled";
- fprintf(stderr,
- "On Zen CPUs, rr will not work reliably unless you disable the "
- "hardware SpecLockMap optimization.\nFor instructions on how to "
- "do this, see https://github.com/rr-debugger/rr/wiki/Zen\n");
+ if (!Flags::get().suppress_environment_warnings) {
+ fprintf(stderr,
+ "On Zen CPUs, rr will not work reliably unless you disable the "
+ "hardware SpecLockMap optimization.\nFor instructions on how to "
+ "do this, see https://github.com/rr-debugger/rr/wiki/Zen\n");
+ }
  }
  }
 }