[clang] [llvm] [WebAssembly] Change half-precision feature name to fp16. (PR #105434)

[via llvm-commits]

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@@ -178,7 +178,7 @@
 // GENERIC-NOT: #define __wasm_bulk_memory__ 1{{$}}
 // GENERIC-NOT: #define __wasm_exception_handling__ 1{{$}}
 // GENERIC-NOT: #define __wasm_extended_const__ 1{{$}}
-// GENERIC-NOT: #define __wasm_half_precision__ 1{{$}}
+// GENERIC-NOT: #define __wasm__fp16__ 1{{$}}
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juj wrote:

Thanks! I missed that, and had tried to just do `--experimental-wasm-fp16`. Changing to `--js-flags="--experimental-wasm-fp16"` works beautifully in Chrome Canary. 👍 

https://github.com/llvm/llvm-project/pull/105434