[llvm] [RISCV] Add scheduling model for SiFive P800 processors (PR #139316)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-x86_64-debian-fast` running on `gribozavr4` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/56/builds/26335

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
             ^~~~
             IvarName
16 warnings generated.
7.288 [1185/46/5046] Linking CXX executable bin/llvm-stress
7.525 [1185/45/5047] Building X86GenExegesis.inc...
7.526 [1185/44/5048] Building X86GenRegisterBank.inc...
7.731 [1185/43/5049] Building X86GenRegisterInfo.inc...
7.789 [1185/42/5050] Building X86GenCallingConv.inc...
7.803 [1185/41/5051] Building X86GenMnemonicTables.inc...
7.886 [1185/40/5052] Building RISCVGenSubtargetInfo.inc...
FAILED: lib/Target/RISCV/RISCVGenSubtargetInfo.inc /b/1/clang-x86_64-debian-fast/llvm.obj/lib/Target/RISCV/RISCVGenSubtargetInfo.inc 
cd /b/1/clang-x86_64-debian-fast/llvm.obj/lib/Target/RISCV && /b/1/clang-x86_64-debian-fast/llvm.obj/bin/llvm-tblgen -gen-subtarget -I /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/RISCV -I/b/1/clang-x86_64-debian-fast/llvm.obj/include -I/b/1/clang-x86_64-debian-fast/llvm.src/llvm/include -I /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/RISCV/RISCV.td --write-if-changed -o RISCVGenSubtargetInfo.inc -d RISCVGenSubtargetInfo.inc.d && /opt/cmake-3.25.1-linux-x86_64/bin/cmake -E cmake_transform_depfile Ninja gccdepfile /b/1/clang-x86_64-debian-fast/llvm.src/llvm /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/RISCV /b/1/clang-x86_64-debian-fast/llvm.obj /b/1/clang-x86_64-debian-fast/llvm.obj/lib/Target/RISCV /b/1/clang-x86_64-debian-fast/llvm.obj/lib/Target/RISCV/RISCVGenSubtargetInfo.inc.d /b/1/clang-x86_64-debian-fast/llvm.obj/CMakeFiles/d/31403607ad2123dda3d6a65d00e93f7345cfecdad34ddf9a5338bd7a5bea0963.d
Included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/RISCV/RISCV.td:61:
/b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/Target/RISCV/RISCVSchedSiFiveP800.td:61:5: error: Processor does not define resources for WriteFAdd128
def SiFiveP800Model : SchedMachineModel {
    ^
7.972 [1185/39/5053] Building RISCVGenSearchableTables.inc...
8.045 [1185/38/5054] Building X86GenInstrMapping.inc...
8.107 [1185/37/5055] Building X86GenAsmWriter.inc...
8.317 [1185/36/5056] Building X86GenAsmWriter1.inc...
8.368 [1185/35/5057] Building X86GenDisassemblerTables.inc...
8.376 [1185/34/5058] Building X86GenFoldTables.inc...
8.486 [1185/33/5059] Building X86GenAsmMatcher.inc...
8.638 [1185/32/5060] Building CXX object lib/Object/CMakeFiles/LLVMObject.dir/IRSymtab.cpp.o
8.639 [1185/31/5061] Building OCaml documentation for llvm
9.970 [1185/30/5062] Building X86GenGlobalISel.inc...
10.048 [1185/29/5063] Building X86GenFastISel.inc...
10.801 [1185/28/5064] Building CXX object tools/clang/lib/Driver/CMakeFiles/obj.clangDriver.dir/ToolChains/HIPUtility.cpp.o
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/HIPUtility.cpp:10:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/Clang.h:12:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/MSVC.h:12:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/AMDGPU.h:12:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/Gnu.h:14:
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/clang/lib/Driver/ToolChains/ROCm.h:14:
/b/1/clang-x86_64-debian-fast/llvm.src/clang/include/clang/Driver/Driver.h:781:19: warning: parameter 'Search' not found in the function declaration [-Wdocumentation]
  /// \param [in] Search and expansion options.
                  ^~~~~~
/b/1/clang-x86_64-debian-fast/llvm.src/clang/include/clang/Driver/Driver.h:781:19: note: did you mean 'ExpCtx'?
  /// \param [in] Search and expansion options.
                  ^~~~~~
                  ExpCtx
1 warning generated.
11.391 [1185/27/5065] Building X86GenSubtargetInfo.inc...
11.533 [1185/26/5066] Building AArch64GenSubtargetInfo.inc...
11.644 [1185/25/5067] Building X86GenDAGISel.inc...
11.985 [1185/24/5068] Building AArch64GenInstrInfo.inc...
12.734 [1185/23/5069] Building X86GenInstrInfo.inc...
12.766 [1185/22/5070] Building CXX object lib/MC/MCParser/CMakeFiles/LLVMMCParser.dir/AsmParser.cpp.o
In file included from /b/1/clang-x86_64-debian-fast/llvm.src/llvm/lib/MC/MCParser/AsmParser.cpp:45:

```

</details>

https://github.com/llvm/llvm-project/pull/139316