RFR: 8365047: Remove exception handler stub code in C2 [v7]

[Andrew Haley]

On Wed, 22 Oct 2025 12:00:04 GMT, Andrew Dinn <adinn at openjdk.org> wrote:

> > SafeFetch was designed specifically for problems like this one.
> 
> It was. However, I do not believe we should be in a situation where we are checking a call branch that is the last instruction in a code buffer -- which means there is no need to incur the cost of a SafeFetch.

It's still incorrect, though, because we can't guarantee that a call can't be at the end of a mapped region. Please include this fix.

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PR Comment: https://git.openjdk.org/jdk/pull/26678#issuecomment-3432654503