commit 364b43d2c38484df0d952f1c59d36770f5c33612
author Scott Todd <scott.todd0@gmail.com> Wed Jul 17 16:59:46 2024 -0700
committer GitHub <noreply@github.com> Wed Jul 17 16:59:46 2024 -0700
tree 1bafc23d81358873671a7bc430011b43daafabce
parent c628be0209a7822b6d3ac7bb9325db092aa09f14

Skip samples/custom_dispatch/cuda/kernels/ on MSVC. (#17934)

See https://github.com/iree-org/iree/issues/17933. This sample started
failing to build on my Windows machine with errors like

```
[build] [6785/7145  94% :: 1152.192] Compiling ukernel.cu to cuda_ukernel_ukernel.cu.bc
[build] FAILED: samples/custom_dispatch/cuda/kernels/cuda_ukernel_ukernel.cu.bc D:/dev/projects/iree-build/samples/custom_dispatch/cuda/kernels/cuda_ukernel_ukernel.cu.bc 
[build] cmd.exe /C "cd /D D:\dev\projects\iree-build\samples\custom_dispatch\cuda\kernels && D:\dev\projects\iree-build\llvm-project\bin\clang.exe -x cuda --cuda-gpu-arch=sm_60 "--cuda-path=C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.2" -Wno-unknown-cuda-version -nocudalib --cuda-device-only -D_ALLOW_COMPILER_AND_STL_VERSION_MISMATCH -O3 -c -emit-llvm D:/dev/projects/iree/samples/custom_dispatch/cuda/kernels/ukernel.cu -o cuda_ukernel_ukernel.cu.bc"
[build] In file included from <built-in>:1:
[build] In file included from D:\dev\projects\iree-build\llvm-project\lib\clang\19\include\__clang_cuda_runtime_wrapper.h:472:
[build] In file included from D:\dev\projects\iree-build\llvm-project\lib\clang\19\include\__clang_cuda_cmath.h:16:
[build] In file included from C:\Program Files (x86)\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.31.31103\include\limits:13:
[build] In file included from C:\Program Files (x86)\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.31.31103\include\cwchar:12:
[build] In file included from C:\Program Files (x86)\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.31.31103\include\cstdio:12:
[build] In file included from C:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt\stdio.h:13:
[build] C:\Program Files (x86)\Windows Kits\10\include\10.0.22621.0\ucrt\corecrt_wstdio.h:486:24: error: non-const lvalue reference to type '__builtin_va_list' cannot bind to a value of unrelated type 'va_list' (aka 'char *')
[build]   486 |         __crt_va_start(_ArgList, _Locale);
[build]       |                        ^~~~~~~~
[build] D:\dev\projects\iree-build\llvm-project\lib\clang\19\include\vadefs.h:39:54: note: expanded from macro '__crt_va_start'
[build]    39 | #define __crt_va_start(ap, param) __builtin_va_start(ap, param)
[build]       |                                                      ^~
```

We have some ideas for how to fix it, but disabling the sample keeps
local builds working.

The message text is similar to another sample, resulting in CMake
configure logs like this:
```
[build] -- Configuring IREE runtime plugins
[build] -- Enabling runtime tracing using the tracy provider
[build] -- Tracing mode set at 2
[build] -- IREE custom_dispatch/cpu/plugin standalone example ignored -- #12801 required to make MSVC work
[build] -- IREE custom_dispatch/cuda/kernels example ignored -- #17933 required to make MSVC work
[build] CMake Warning at samples/custom_module/dynamic/CMakeLists.txt:12 (message):
[build]   IREE_ENABLE_RUNTIME_TRACING enabled but it currently has issues with
[build]   dynamic libraries
[build] 
[build] 
[build] -- Configuring done (48.9s)
```