RFR: 8308817: RISC-V: Support VectorTest node for Vector API

[Gui Cao]

On Fri, 26 May 2023 09:40:08 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Hi,
>> 
>> we have added VectorTest node, It was implemented by referring to RVV v1.0 [1]. please take a look and have some reviews. Thanks a lot.
>> We can use the Int256VectorTests.java[2] to print the compilation log, verify and observe the generation of nodes.
>> 
>> For example, we can use the following command to print the compilation log of a jtreg test case:
>> 
>> /home/zifeihan/jdk-tools/jtreg/bin/jtreg \
>> -v:default \
>> -concurrency:16 -timeout:50 \
>> -javaoption:-XX:+UnlockExperimentalVMOptions \
>> -javaoption:-XX:+UseRVV \
>> -javaoption:-XX:+PrintOptoAssembly \
>> -javaoption:-XX:LogFile=/home/zifeihan/jdk-rvv/Int256VectorTests_PrintOptoAssembly_20230525.log \
>> -jdk:/home/zifeihan/jdk-rvv/build/linux-riscv64-server-fastdebug/jdk \
>> -compilejdk:/home/zifeihan/jdk-rvv/build/linux-x86_64-server-release/images/jdk \
>> /home/zifeihan/jdk/test/jdk/jdk/incubator/vector/Int256VectorTests.java
>> 
>> 
>> Also here's a more concise test case, VectorTestDemo:
>> 
>> 
>> import jdk.incubator.vector.ByteVector;
>> import jdk.incubator.vector.VectorMask;
>> 
>> public class VectorTestDemo {
>>     static boolean[] d = new boolean[]{true, false, false, false, false, false, false, false};
>>     static VectorMask<Byte> avmask = VectorMask.fromArray(ByteVector.SPECIES_64, d, 0);
>> 
>>     public static void main(String[] args) {
>>         for (int i = 0; i < 300000; i++) {
>>             
>>             final boolean alltrue = alltrue();
>>             if (alltrue != false) {
>>                 throw new RuntimeException("alltrue");
>>             }
>>             final boolean anytrue = anytrue();
>>             if (anytrue != true) {
>>                 throw new RuntimeException("anytrue");
>>             }
>>         }
>>     }
>> 
>>     public static boolean anytrue() {
>>         return avmask.anyTrue();
>>     }
>> 
>>     public static boolean alltrue() {
>>         return avmask.allTrue();
>>     }
>> }
>> 
>> 
>> We can compile `VectorTestDemo.java` using `javac --add-modules jdk.incubator.vector VectorTestDemo.java`, and use `./java -XX:-TieredCompilation -XX:+UnlockExperimentalVMOptions -XX:+UseRVV -XX:+PrintOptoAssembly -XX:+LogCompilation -XX:LogFile=compile.log VectorTestDemo > aaa.log` to start the test case, we can observe the specified compilation log `compile.log`, which contains the VectorTest node for the PR implementation.
>> Some of the compilation logs of VectorTestDemo#anytrue method are as follows.
>> 
>> 05e lwu R28, [R7, #12] # loadN, compressed ptr, #@loadN ! Field: jdk/i...
>
> Looks good.

@RealFYang @feilongjiang Thanks for the review.

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PR Comment: https://git.openjdk.org/jdk/pull/14138#issuecomment-1567607373