[jdk16] Integrated: 8258558: Revert changes for JDK-8252505 and related issues

[Aleksey Shipilev]

On Tue, 5 Jan 2021 18:54:45 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> As the result of retroactive CSR discussion in JDK-8257827, I have decided to revert the original push and all the follow-up changes from JDK 16, in order to reconsider them for JDK 17.
> 
> This PR reverts the following changes -- the reversal is clean and done without manual intervention:
>   JDK-8258111: Problemlist compiler/blackhole tests for -Xcomp until JDK-8258101 is fixed
>   JDK-8257848: -XX:CompileCommand=blackhole,* should be diagnostic
>   JDK-8257805: Add compiler/blackhole tests to tier1
>   JDK-8257803: Add -Xbatch to compiler/blackhole tests
>   JDK-8252505: C1/C2 compiler support for blackholes
> 
> While line count is great, the overwhelming majority of changes are test removals.
> 
> Additional testing:
>  - [x] Linux x86_64 `tier1`

This pull request has now been integrated.

Changeset: ad456787
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.java.net/jdk16/commit/ad456787
Stats:     1662 lines in 33 files changed: 0 ins; 1660 del; 2 mod

8258558: Revert changes for JDK-8252505 and related issues

Reviewed-by: kvn

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PR: https://git.openjdk.java.net/jdk16/pull/86