Fill out more SuperPMI cases for LoongArch64 and RISCV64

[BruceForstall]

With these changes, SuperPMI can be used with a LoongArch64 or RISCV64 cross-targeting altjit and x64 MCH files to generate and view some code. There are lots of "missing data" cases; for RISCV64 about half of x64 contexts replay successfully.

More work is required for asmdiffs to work, such as updating coredistools and implementing Loongarch64/RISCV64 relocation handling.

[Copilot]

Pull Request Overview

This PR enables SuperPMI to work with LoongArch64 and RISCV64 by extending the valid architectures and adding target-specific logic.

• Updated help messages for arch, target_arch, and mch_arch to include loongarch64 and riscv64.
• Added logic in verify_target_args to automatically override target_os to Linux and adjust mch_arch for LoongArch64/RISCV64 targets.

Files not reviewed (8)

• src/coreclr/jit/disasm.cpp: Language not supported
• src/coreclr/jit/importercalls.cpp: Language not supported
• src/coreclr/tools/superpmi/superpmi-shared/compileresult.cpp: Language not supported
• src/coreclr/tools/superpmi/superpmi-shared/spmiutil.h: Language not supported
• src/coreclr/tools/superpmi/superpmi/commandline.cpp: Language not supported
• src/coreclr/tools/superpmi/superpmi/jitinstance.cpp: Language not supported
• src/coreclr/tools/superpmi/superpmi/neardiffer.cpp: Language not supported
• src/coreclr/tools/superpmi/superpmi/superpmi.cpp: Language not supported

[BruceForstall]

@AndyAyersMS PTAL
cc @dotnet/jit-contrib

[risc-vv]

141aa94 is being scheduled for building and testing

GIT: 141aa9431fa7bf2c581d4f9caf534b9eea3ace21
REPO: dotnet/runtime
BRANCH: main

Release-build FAILED

buildinfo.json
Compilation failed during core build

[risc-vv]

RISC-V Release-CLR-VF2: 9528 / 9548 (99.79%)

=======================
      passed: 9528
      failed: 3
     skipped: 106
      killed: 17
------------------------
  TOTAL libs: 9654
 TOTAL tests: 9654
   REAL time: 2h 12min 9s 520ms
=======================

Release-CLR-VF2.md, Release-CLR-VF2.xml, testclr_output.tar.gz

Build information and commands

GIT: 317c594686aecd81c2a0dddd5e81488d6a6b642f
CI: a8426a46d8575dfcb3b5fec0d7d0b7a7c118d690
REPO: dotnet/runtime
BRANCH: main
CONFIG: Release
LIB_CONFIG: Release

RISC-V Release-FX-VF2: 435745 / 461664 (94.39%)

=======================
      passed: 435745
      failed: 707
     skipped: 1486
      killed: 25212
------------------------
  TOTAL libs: 259
 TOTAL tests: 463150
   REAL time: 2h 56min 32s 872ms
=======================

Release-FX-VF2.md, Release-FX-VF2.xml, testfx_output.tar.gz

Build information and commands

GIT: 317c594686aecd81c2a0dddd5e81488d6a6b642f
CI: a8426a46d8575dfcb3b5fec0d7d0b7a7c118d690
REPO: dotnet/runtime
BRANCH: main
CONFIG: Release
LIB_CONFIG: Release

RISC-V Release-FX-QEMU: 642620 / 675557 (95.12%)

=======================
      passed: 642620
      failed: 917
     skipped: 1606
      killed: 32020
------------------------
  TOTAL libs: 259
 TOTAL tests: 677163
   REAL time: 2h 26min 33s 209ms
=======================

Release-FX-QEMU.md, Release-FX-QEMU.xml, testfx_output.tar.gz

Build information and commands

GIT: 317c594686aecd81c2a0dddd5e81488d6a6b642f
CI: a8426a46d8575dfcb3b5fec0d7d0b7a7c118d690
REPO: dotnet/runtime
BRANCH: main
CONFIG: Release
LIB_CONFIG: Release

RISC-V Release-CLR-QEMU: 9528 / 9548 (99.79%)

=======================
      passed: 9528
      failed: 3
     skipped: 106
      killed: 17
------------------------
  TOTAL libs: 9654
 TOTAL tests: 9654
   REAL time: 2h 47min 22s 394ms
=======================

Release-CLR-QEMU.md, Release-CLR-QEMU.xml, testclr_output.tar.gz

Build information and commands

GIT: 317c594686aecd81c2a0dddd5e81488d6a6b642f
CI: a8426a46d8575dfcb3b5fec0d7d0b7a7c118d690
REPO: dotnet/runtime
BRANCH: main
CONFIG: Release
LIB_CONFIG: Release

[BruceForstall]

/ba-g azure linux 3 timeouts