RFR: 8298345: Fix another two C2 IR matching tests for RISC-V

[Feilong Jiang]

On Thu, 8 Dec 2022 03:26:38 GMT, Gui Cao <gcao at openjdk.org> wrote:

> Fix two IR matching tests that failed on RISC-V.
> 
> Vector api Node will be matched only when UseRVV is enabled:
> - test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java
> - test/hotspot/jtreg/compiler/vectorization/TestAutoVecIntMinMax.java
> 
> Please take a look and have some reviews. Thanks a lot.
> 
> ## Testing:
> -  fastdebug on unmatched board without support for RVV
> - - test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java - no tests selected as expected
> - - test/hotspot/jtreg/compiler/vectorization/TestAutoVecIntMinMax.java -  no tests selected as expected
> - fastdebug with -XX:+UseRVV on QEMU
> - - test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java - The C2 graph generated by the test is as expected
> - -  test/hotspot/jtreg/compiler/vectorization/TestAutoVecIntMinMax.java  -The C2 graph generated by the test is as expected
> - fastdebug with -XX:-UseRVV on QEMU
> - - test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java - no tests selected as expected
> - -  test/hotspot/jtreg/compiler/vectorization/TestAutoVecIntMinMax.java  - no tests selected as expected

Thanks for the fixing, with one comment:

test/hotspot/jtreg/compiler/c2/irTests/TestAutoVectorization2DArray.java line 32:

> 30:  * @bug 8279258
> 31:  * @summary Auto-vectorization enhancement for two-dimensional array operations
> 32:  * @requires ((os.arch == "x86" | os.arch == "i386") & (vm.opt.UseSSE == "null" | vm.opt.UseSSE >= 2))

Did you check that still works on other arches? e.g.: x64/aarch64

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PR: https://git.openjdk.org/jdk/pull/11577