[11u] 8229495: SIGILL in C2 generated OSR compilation

[Vladimir Kozlov]

New test TestRCEAfterUnrolling.java is missing. Otherwise backport looks fine.

Thanks,
Vladimir

On 11/23/20 3:04 AM, Roland Westrelin wrote:
> 
> Original bug:
>    https://bugs.openjdk.java.net/browse/JDK-8229495
>    https://hg.openjdk.java.net/jdk/jdk15/rev/c973b5ec934d
>    
> Original patch does not apply cleanly to 11u (different context in
> loopTransform.cpp, loopnode.cpp, node.hpp) but the 11u patch is
> identical to the original patch (except for a change related to node
> budget handling which doesn't exist in 11).
>   
> 11u webrev:
>    http://cr.openjdk.java.net/~roland/8229495.11u/webrev.00/
>   
> Testing: x86_64 build, tier1. The test case passes with and without the
> patch (I noticed when working on the upstream fix that that test case is
> fragile so it's not unexpected).
>   
> Roland.
>