RFR: 8318683: compiler/c2/irTests/TestPhiDuplicatedConversion.java "Failed IR Rules (2) of Methods (2)"

[Vladimir Kozlov]

On Thu, 26 Oct 2023 12:29:44 GMT, Jasmine Karthikeyan <jkarthikeyan at openjdk.org> wrote:

> This patch should fix the testbug where F16 conversions were expected but were not supported by the CPU. Instead of checking for AVX, I now check for `f16c` or `avx512vl`, mirroring the logic in vm_version_x86:
> https://github.com/openjdk/jdk/blob/ec1bf23d012f007c126cb472fcff146cf7f41b1a/src/hotspot/cpu/x86/vm_version_x86.hpp#L770-L772
> 
> I went with the approach of changing the logic in the IR annotation itself instead of the test requirements, as the majority of the IR tests in this file should complete correctly on other platforms. Tier 1 testing passes on my (linux x64) machine. Reviews would be appreciated!

Looks good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16378#pullrequestreview-1706726591