RFR: 8295711: Rename ZBarrierSetAssembler::load_at parameter name from "tmp_thread" to "tmp2"

[Fei Yang]

On Fri, 21 Oct 2022 06:48:22 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Please also fix the `tmp_thread` parameter for x86 while you are at it ;)

It looks to me that the case for x86 is different here.
For x86_32, this formal parameter will be used later for calling 'get_thread()' [1][2].
So I think we should keep its original name.

[1] https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp#L573

[2] https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp#L573

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PR: https://git.openjdk.org/jdk/pull/10783