[OpenCL] Fix BIenqueue_kernel fallthrough (#83238)

svenvh · web-flow · commit e47a81c1d283 · 2024-04-02T09:31:38.000+02:00
Handling of the `BIenqueue_kernel` builtin must not fallthrough to the
`BIget_kernel_work_group_size` builtin, as these builtins have no common
functionality.
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -5835,7 +5835,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
         EmitLifetimeEnd(TmpSize, TmpPtr);
       return Call;
     }
-    [[fallthrough]];
+    llvm_unreachable("Unexpected enqueue_kernel signature");
   }
   // OpenCL v2.0 s6.13.17.6 - Kernel query functions need bitcast of block
   // parameter.

Original file line number	Diff line number	Diff line change
`@@ -5835,7 +5835,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,`
`5835`	`5835`	`EmitLifetimeEnd(TmpSize, TmpPtr);`
`5836`	`5836`	`return Call;`
`5837`	`5837`	`}`
`5838`		`- [[fallthrough]];`
	`5838`	`+ llvm_unreachable("Unexpected enqueue_kernel signature");`
`5839`	`5839`	`}`
`5840`	`5840`	`// OpenCL v2.0 s6.13.17.6 - Kernel query functions need bitcast of block`
`5841`	`5841`	`// parameter.`