[jdk11u-dev] RFR: 8324754: WB_IsIntrinsicAvailable failed with "compiler not available" with option -Xint

[lusou-zhangquan]

On Fri, 9 Feb 2024 10:55:06 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> This should be fixed in mainline (https://github.com/openjdk/jdk) first and then the fix can then be backported to the update release repositories.

With JDK-8251462, WB_IsIntrinsicAvailable doesn't fail with `-Xint` after JDK17  because they use `CompilationPolicy::highest_compile_level()` to get the right compilation level in this commit.

Therefore, we have three ways to fix this problem on JDK11:
1. backport JDK-8251462
2. avoid running test case `TestAESMain` when `-Xint` is on by adding annotation `@requires vm.compMode != "Xint"`
3. return the right compilation level when `-Xint` is enabled on JDK11

This PR chooses the third way, that's the reason why it's not fixed in mainline.

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PR Comment: https://git.openjdk.org/jdk11u-dev/pull/2497#issuecomment-1951060631