RFR: 8293214: Add support for Linux/LoongArch64 [v3]

[Ao Qi]

On Wed, 7 Sep 2022 11:59:42 GMT, Johan Vos <jvos at openjdk.org> wrote:

>> Ao Qi has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   revert
>
> build.gradle line 313:
> 
>> 311: } else if (IS_MAC && OS_ARCH != "x86_64" && OS_ARCH != "aarch64") {
>> 312:     fail("Unknown and unsupported build architecture: $OS_ARCH")
>> 313: } else if (IS_LINUX && OS_ARCH != "i386" && OS_ARCH != "amd64" && OS_ARCH != "aarch64" && OS_ARCH != "loongarch64") {
> 
> this could be simplified with 
> `... && !IS_LOONGARCH64` which avoids the more error-prone duplicate "loongarch64" string.
> (the same applies to replacing the aarch64 check with !IS_AARCH64)

Done.

> modules/javafx.media/src/main/native/gstreamer/projects/linux/avplugin/Makefile line 36:
> 
>> 34:          -ffunction-sections -fdata-sections
>> 35: 
>> 36: ifeq (,$(findstring $(ARCH), aarch64 loongarch64))
> 
> This will work, but I wonder if we should revert the test: we now always assume that msse2 is supported, unless we are on an architecture which we know doesn't support it. It might be safer to only ask for msse2 support if we are really sure it is supported by the architecture (which currently means a check on x32 and x64)

Done.

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PR: https://git.openjdk.org/jfx/pull/888