Disable RTTI `-GR-` for Hotspot when building with MSVC. This drops the size of `jvm.dll` by roughly 1 MB. Hotspot does not rely on RTTI and it is disabled for both GCC/Clang and Open XL C/C++ already. This change disables it for MSVC, ensuring we do not accidently rely on RTTI for Windows-specific code while also decreasing the resulting binary size.
Cheers to @alexmenkov for finding the tricky root cause of why disabling RTTI was causing a subset of serviceability agent tests to fail. ------------- Commit messages: - Force MSVC to emit unique vtable for NotificationThread - Disable RTTI with MSVC Changes: https://git.openjdk.org/jdk/pull/12743/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12743&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8303166 Stats: 9 lines in 3 files changed: 7 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/12743.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12743/head:pull/12743 PR: https://git.openjdk.org/jdk/pull/12743
