[libclc] 0168948 - [libclc] Use spirv[64]-mesa-mesa3d triple in README.md (#196483)

[via cfe-commits]

Author: Konrad Kleine
Date: 2026-05-08T11:18:45+02:00
New Revision: 016894861f0dc650b4fc22d57034c2f41b7f8481

URL: https://github.com/llvm/llvm-project/commit/016894861f0dc650b4fc22d57034c2f41b7f8481
DIFF: https://github.com/llvm/llvm-project/commit/016894861f0dc650b4fc22d57034c2f41b7f8481.diff

LOG: [libclc] Use spirv[64]-mesa-mesa3d triple in README.md (#196483)

Now that #194607 landed we use a normalized triple in the README for the
SPIRV targets. Before `spirv-mesa3d-` and `spirv64-mesa3d-` were being
used and those will be normalized to `spirv-unknown-mesa3d` and
`spirv64-unknown-mesa3d` by the following command in
`runtimes/CMakeLists.txt` with this command:

```console
$ clang --target=spirv-mesa3d- -print-target-triple
spirv-unknown-mesa3d
```

This is because in `llvm/lib/TargetParser/Triple.cpp` the term `mesa3d`
is recognized as an OS and placed in third position. The install path
for `libclc.spv` there ends up in `spirv-unknown-mesa3d/libclc.spv`.

With this change we suggest to use triples that "survive" the
normalization:

```console
$ clang --target=spirv-mesa-mesa3d -print-target-triple
spirv-mesa-mesa3d
```

See also this discussion:
https://github.com/llvm/llvm-project/pull/194607#issuecomment-4378126607

Added: 
    

Modified: 
    libclc/README.md

Removed: 
    


################################################################################
diff  --git a/libclc/README.md b/libclc/README.md
index 81ce1553d139c..e096a070ee878 100644
--- a/libclc/README.md
+++ b/libclc/README.md
@@ -61,9 +61,9 @@ cmake ../llvm -G Ninja -DLLVM_ENABLE_PROJECTS="clang" -DCMAKE_BUILD_TYPE=Release
 #### Configure for SPIR-V targets
 ```
 cmake ../llvm -G Ninja -DLLVM_ENABLE_PROJECTS="clang" -DCMAKE_BUILD_TYPE=Release \
-  -DRUNTIMES_spirv-mesa3d-_LLVM_ENABLE_RUNTIMES=libclc \
-  -DRUNTIMES_spirv64-mesa3d-_LLVM_ENABLE_RUNTIMES=libclc \
-  -DLLVM_RUNTIME_TARGETS="spirv-mesa3d-;spirv64-mesa3d-"
+  -DRUNTIMES_spirv-mesa-mesa3d_LLVM_ENABLE_RUNTIMES=libclc \
+  -DRUNTIMES_spirv64-mesa-mesa3d_LLVM_ENABLE_RUNTIMES=libclc \
+  -DLLVM_RUNTIME_TARGETS="spirv-mesa-mesa3d;spirv64-mesa-mesa3d"
 ```
 
 To build multiple targets, pass them as a semicolon-separated list in