[aarch64-port-dev ] RFR(L): 8231441: AArch64: Initial SVE backend support

[Nick Gasson]

Hi Andrew,

On 08/20/20 16:48 pm, Andrew Dinn wrote:
>> 
>> It is perhaps a bit strange to have the test code under src/ and
>> embedded in the assembler implementation. How about we move it under
>> test/ using the existing gtest framework for native code tests? That
>> runs in tier1 and also for release builds. I tried this just now and
>> it's easy to do.
> I'm not sure that would be an improvement. This python code is used to
> generate C code run as part of JVM startup in a debug JVM build i.e.
> code that is linked into the JVM itself. So, the code it generates is
> really the same as the debug code embedded in the JVM. It doesn't really
> bear any relation to the code in the test tree.
>

I meant move the test itself - entry() and asm_check() in
assembler_aarch64.cpp - under test/hotspot/gtest. The generator would
move with it.

> If the generator code were to go anywhere else it would perhaps make
> most sense to put it in the make tree. I'm not sure that is required
> though or even appropriate. There is already a precedent for keeping
> generator code in the source tree and, when it is specific to a given
> arch, keeping it next to the related source. The adlc generator code
> sits in the shared source tree. The m4 file used to generate parts of
> aarch64.ad is in the aarch64 source tree.
>
> regards,
>
>
> Andrew Dinn
> -----------
> Red Hat Distinguished Engineer
> Red Hat UK Ltd
> Registered in England and Wales under Company Registration No. 03798903
> Directors: Michael Cunningham, Michael ("Mike") O'Neill