RFR: 8358556: Assert when running with -XX:-UseLibmIntrinsic [v4]

[Sandhya Viswanathan]

On Sat, 7 Jun 2025 00:57:25 GMT, Mohamed Issa <duke at openjdk.org> wrote:

>> This change fixes unwanted calls to the cbrt and tanh intrinsics on x86 when they are explicitly disabled by flags such as _-XX:-UseLibmIntrinsic_ or _-XX:-InlineIntrinsics_.
>
> Mohamed Issa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add extra check for InlineIntrinscs flag

src/hotspot/share/classfile/vmIntrinsics.cpp line 319:

> 317:   case vmIntrinsics::_dtanh:
> 318:   case vmIntrinsics::_dcbrt:
> 319:     if (!InlineMathNatives || !InlineIntrinsics) return true;

You also need to add check for UseLibmIntrinsic here:
#ifdef AMD64
    if (!UseLibmIntrinsic)  return true;
#endif

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PR Review Comment: https://git.openjdk.org/jdk/pull/25680#discussion_r2136250496