8185505: AArch64: Port AOT

[Andrew Haley]

On 04/16/2018 09:53 AM, Ningsheng Jian wrote:
> I can see both the jdk patch and Graal PR contain changes of AArch64Assembler.java and AArch64MacroAssembler.java, but the changes looks somewhat different. How will they be synced?

The changes to Graal in JDK do no more than allow OpenJDK to build.  They
are not called by anything, and will disappear at the next Graal import.

> I noticed that in make/hotspot/lib/JvmFeatures.gmk line ~144, there's:
> 
>   JVM_EXCLUDE_FILES += \
>       compiledIC_aot_x86_64.cpp
> 
> Do you want to add compiledIC_aot_aarch64.cpp to that list?

I don't really know what this does, so I have no idea.

> I also found that _immutable_PIC and its getters/setters are in the INCLUDE_AOT block, but some of their uses are not:
> 
> src/hotspot/cpu/aarch64/compiledIC_aarch64.cpp:
> 
> 61   if (cbuf.immutable_PIC()) {
> 
> src/hotspot/share/jvmci/jvmciCodeInstaller.cpp:
> 
> 594   buffer.set_immutable_PIC(_immutable_pic_compilation);
> 628   buffer.set_immutable_PIC(_immutable_pic_compilation);

Thank you.  For the sake of consistency I will change it.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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