RFR: 8364187: Make getClassAccessFlagsRaw non-native

[Chen Liang]

On Mon, 28 Jul 2025 20:14:15 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This change removes the intrinsic for getClassAccessFlagsRaw for reflection and initializes an rawAccessFlags field in java.lang.Class instead, that Java code can non-natively access.
> Tested with tier1-4.

src/java.base/share/classes/java/lang/Class.java line 1012:

> 1010:     private transient Object[] signers; // Read by VM, mutable
> 1011:     private final transient char modifiers;  // Set by the VM
> 1012:     private final transient char rawAccessFlags;  // Set by the VM

I suggest `classFileFlags` in the spirit of `getClassFileVersion` - this is the flag on the JVMS 4 `ClassFile` structure, while the `modifiers` can be alternatively from `InnerClasses` attribute.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/26517#discussion_r2237933184