[SPIRV] Add Target Builtins using Distance ext as an example (#121598)

- Update pr labeler so new SPIRV files get properly labeled.
- Add distance target builtin to BuiltinsSPIRV.td.
- Update TargetBuiltins.h to account for spirv builtins.
- Update clang basic CMakeLists.txt to build spirv builtin tablegen.
- Hook up sema for SPIRV in Sema.h|cpp, SemaSPIRV.h|cpp, and
SemaChecking.cpp.
- Hookup sprv target builtins to SPIR.h|SPIR.cpp target.
- Update GBuiltin.cpp to emit spirv intrinsics when we get the expected
spirv target builtin.

Consensus was reach in this RFC to add both target builtins and pattern
matching:
https://discourse.llvm.org/t/rfc-add-targetbuiltins-for-spirv-to-support-hlsl/83329.

pattern matching will come in a separate pr this one just sets up the
groundwork to do target builtins for spirv.

partially resolves
[#99107](https://github.com/llvm/llvm-project/issues/99107)

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index d651751..abb46d3 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -61,6 +61,7 @@
 #include "clang/Sema/SemaPPC.h"
 #include "clang/Sema/SemaPseudoObject.h"
 #include "clang/Sema/SemaRISCV.h"
+#include "clang/Sema/SemaSPIRV.h"
 #include "clang/Sema/SemaSYCL.h"
 #include "clang/Sema/SemaSwift.h"
 #include "clang/Sema/SemaSystemZ.h"
@@ -239,6 +240,7 @@ Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
       PPCPtr(std::make_unique<SemaPPC>(*this)),
       PseudoObjectPtr(std::make_unique<SemaPseudoObject>(*this)),
       RISCVPtr(std::make_unique<SemaRISCV>(*this)),
+      SPIRVPtr(std::make_unique<SemaSPIRV>(*this)),
       SYCLPtr(std::make_unique<SemaSYCL>(*this)),
       SwiftPtr(std::make_unique<SemaSwift>(*this)),
       SystemZPtr(std::make_unique<SemaSystemZ>(*this)),