RFR: 8327283: RISC-V: Minimal build failed after JDK-8319716 [v3]

[Gui Cao]

> Hi, please review this patch that fix the minimal build failed for riscv.
> 
> Error log for minimal build:
> 
> Creating support/modules_libs/java.base/minimal/libjvm.so from 591 file(s)
> ^@/home/zifeihan/jdk/src/hotspot/cpu/riscv/stubGenerator_riscv.cpp: In member function ‘u_char* StubGenerator::Sha2Generator::generate_sha2_implCompress(Assembler::SEW, bool)’:
> /home/zifeihan/jdk/src/hotspot/cpu/riscv/stubGenerator_riscv.cpp:3938:41: error: ‘MaxVectorSize’ was not declared in this scope; did you mean ‘MaxNewSize’?
>  3938 |       if (vset_sew == Assembler::e64 && MaxVectorSize == 16) { // SHA512 and VLEN = 128
>       |                                         ^~~~~~~~~~~~~
>       |                                         MaxNewSize
> gmake[3]: *** [lib/CompileJvm.gmk:165: /home/zifeihan/jdk/build/linux-riscv64-minimal-fastdebug/hotspot/variant-minimal/libjvm/objs/stubGenerator_riscv.o] Error 1
> gmake[3]: *** Waiting for unfinished jobs....
> ^@gmake[2]: *** [make/Main.gmk:253: hotspot-minimal-libs] Error 2
> gmake[2]: *** Waiting for unfinished jobs....
> ^@
> ERROR: Build failed for target 'images' in configuration 'linux-riscv64-minimal-fastdebug' (exit code 2)
> 
> === Output from failing command(s) repeated here ===
> * For target hotspot_variant-minimal_libjvm_objs_stubGenerator_riscv.o:
> /home/zifeihan/jdk/src/hotspot/cpu/riscv/stubGenerator_riscv.cpp: In member function ‘u_char* StubGenerator::Sha2Generator::generate_sha2_implCompress(Assembler::SEW, bool)’:
> /home/zifeihan/jdk/src/hotspot/cpu/riscv/stubGenerator_riscv.cpp:3938:41: error: ‘MaxVectorSize’ was not declared in this scope; did you mean ‘MaxNewSize’?
>  3938 |       if (vset_sew == Assembler::e64 && MaxVectorSize == 16) { // SHA512 and VLEN = 128
>       |                                         ^~~~~~~~~~~~~
>       |                                         MaxNewSize
> 
> * All command lines available in /home/zifeihan/jdk/build/linux-riscv64-minimal-fastdebug/make-support/failure-logs.
> === End of repeated output ===
> 
> No indication of failed target found.
> HELP: Try searching the build log for '] Error'.
> HELP: Run 'make doctor' to diagnose build problems.
> 
> make[1]: *** [/home/zifeihan/jdk/make/Init.gmk:323: main] Error 2
> make: *** [/home/zifeihan/jdk/make/Init.gmk:189: images] Error 2
> 
> 
> The root cause is that MaxVectorSize is only defined under COMPILER2 , We should use VM_Version::_initial_vector_length instead of MaxVectorSize.  
> 
> Testing:
> 
> - [x] linux-riscv minimal fastdebug native build

Gui Cao has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Fix for robehn comment

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/18114/files
  - new: https://git.openjdk.org/jdk/pull/18114/files/e4bc8405..0c7a6780

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18114&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18114&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18114.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18114/head:pull/18114

PR: https://git.openjdk.org/jdk/pull/18114