[clang] [llvm] [llvm][RISCV] Support batched dot product extensions MC layer (PR #196467)

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github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 134459 tests passed
* 3253 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Clang
<details>
<summary>Clang.Driver/print-supported-extensions-riscv.c</summary>

```
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\clang.exe --target=riscv64-linux-gnu --print-supported-extensions | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe --strict-whitespace --implicit-check-not=FEAT_ C:\_work\llvm-project\llvm-project\clang\test\Driver\print-supported-extensions-riscv.c
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\clang.exe' --target=riscv64-linux-gnu --print-supported-extensions
# .---command stderr------------
# | clang version 23.0.0git (https://github.com/llvm/llvm-project 416d8fcf3d3fa1dba9cad641061e1f7771fb7bc9)
# | Target: riscv64-unknown-linux-gnu
# | Thread model: posix
# | InstalledDir: C:\_work\llvm-project\llvm-project\build\bin
# | Build config: +assertions
# `-----------------------------
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' --strict-whitespace --implicit-check-not=FEAT_ 'C:\_work\llvm-project\llvm-project\clang\test\Driver\print-supported-extensions-riscv.c'
# .---command stderr------------
# | C:\_work\llvm-project\llvm-project\clang\test\Driver\print-supported-extensions-riscv.c:253:20: error: CHECK-NEXT: is not on the line after the previous match
# | // CHECK-NEXT:     zvfbfa               0.1       'Zvfbfa' (Additional BF16 vector compute support)
# |                    ^
# | <stdin>:251:5: note: 'next' match was here
# |     zvfbfa               0.1       'Zvfbfa' (Additional BF16 vector compute support)
# |     ^
# | <stdin>:249:103: note: previous match ended here
# |     zvdot4a8i            0.1       'Zvdot4a8i' (Vector 4-element Dot Product of packed 8-bit Integers)
# |                                                                                                       ^
# | <stdin>:250:1: note: non-matching line after previous match is here
# |     zvfbdota32f          0.2       'Zvfbdota32f' (FP32 batched dot-product extension)
# | ^
# | 
# | Input file: <stdin>
# | Check file: C:\_work\llvm-project\llvm-project\clang\test\Driver\print-supported-extensions-riscv.c
# | 
# | -dump-input=help explains the following input dump.
# | 
# | Input was:
# | <<<<<<
# |           .
# |           .
# |           .
# |         246:     zicfiss              1.0       'Zicfiss' (Shadow stack) 
# |         247:     zvabd                0.7       'Zvabd' (Vector Absolute Difference) 
# |         248:     zvbc32e              0.7       'Zvbc32e' (Vector Carryless Multiplication with 32-bits elements) 
# |         249:     zvdot4a8i            0.1       'Zvdot4a8i' (Vector 4-element Dot Product of packed 8-bit Integers) 
# |         250:     zvfbdota32f          0.2       'Zvfbdota32f' (FP32 batched dot-product extension) 
# |         251:     zvfbfa               0.1       'Zvfbfa' (Additional BF16 vector compute support) 
# | next:253         !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  error: match on wrong line
# |         252:     zvfofp8min           0.2       'Zvfofp8min' (Vector OFP8 Converts) 
# |         253:     zvfqwbdota8f         0.2       'Zvfqwbdota8f' (OCP FP8 batched dot-product extension) 
# |         254:     zvfwbdota16bf        0.2       'Zvfwbdota16bf' (BF16 batched dot-product extension) 
# |         255:     zvkgs                0.7       'Zvkgs' (Vector-Scalar GCM instructions for Cryptography) 
# |         256:     zvqwbdota16i         0.2       'Zvqwbdota16i' (16-bit integer batched dot-product extension) 
# |           .
# |           .
# |           .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/196467