[lworld] RFR: 8264897: [lworld] C2: Use BarrierSetC2::obj_allocate to buffer inline type in PhaseMacroExpand::expand_mh_intrinsic_return

[Yi Yang]

On Thu, 15 Apr 2021 02:55:25 GMT, Yi Yang <yyang at openjdk.org> wrote:

> Try to reuse existing BarrierSetC2::obj_allocate functionality for PhaseMacroExpand::expand_mh_intrinsic_return.
> 
> Testing: x86_64 + linux+ slowdebug/release
> [x] test/hotspot/jtreg/runtime/valhalla 
> [x] test/hotspot/jtreg/compiler/valhalla 
> 
> Thanks,
> Yang

Thank you Tobias! Sorry for so many nits, I will check them more carefully in later PRs.

Best Regards,
Yang

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PR: https://git.openjdk.java.net/valhalla/pull/385