8185505: AArch64: Port AOT

[Vladimir Kozlov]

On 4/16/18 2:03 AM, Andrew Haley wrote:
> 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.

It was done when we did not support/build AOT on Win and MacOS. It also work when AOT is disabled in build: configure 
--disable-aot
We have to exclude to AOT files to avoid build failure because they do not have #ifdef INCLUDE_AOT.

I think compiledIC_aot_aarch64.cpp should be added to exclude list too. And you can test you code with --disable-aot

Vladimir

> 
>> 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.
>