llvmbot wrote:

<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Heejin Ahn (aheejin)

<details>
<summary>Changes</summary>

Now that we are about to upgrade emsdk's default node to v18.20.3 
(https://github.com/emscripten-core/emsdk/pull/1387), we can re-enable 
reference-types by default again. This effectively reverts #<!-- -->90792.

---
Full diff: https://github.com/llvm/llvm-project/pull/93261.diff


3 Files Affected:

- (modified) clang/docs/ReleaseNotes.rst (+4-4) 
- (modified) clang/lib/Basic/Targets/WebAssembly.cpp (+1-1) 
- (modified) clang/test/Preprocessor/wasm-target-features.c (+1-1) 


``````````diff
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 2b35e2162ab5b..dfc1af8c4be8a 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -881,10 +881,10 @@ AIX Support
 WebAssembly Support
 ^^^^^^^^^^^^^^^^^^^
 
-The -mcpu=generic configuration now enables multivalue feature, which is
-standardized and available in all major engines. Enabling multivalue here only
-enables the language feature but does not turn on the multivalue ABI (this
-enables non-ABI uses of multivalue, like exnref).
+The -mcpu=generic configuration now enables multivalue and 
reference-types.These
+proposals are standardized and available in all major engines. Enabling
+multivalue here only enables the language feature but does not turn on the
+multivalue ABI (this enables non-ABI uses of multivalue, like exnref).
 
 AVR Support
 ^^^^^^^^^^^
diff --git a/clang/lib/Basic/Targets/WebAssembly.cpp 
b/clang/lib/Basic/Targets/WebAssembly.cpp
index 5a000314a72ce..1e565f0a5319f 100644
--- a/clang/lib/Basic/Targets/WebAssembly.cpp
+++ b/clang/lib/Basic/Targets/WebAssembly.cpp
@@ -153,6 +153,7 @@ bool WebAssemblyTargetInfo::initFeatureMap(
   auto addGenericFeatures = [&]() {
     Features["multivalue"] = true;
     Features["mutable-globals"] = true;
+    Features["reference-types"] = true;
     Features["sign-ext"] = true;
   };
   auto addBleedingEdgeFeatures = [&]() {
@@ -164,7 +165,6 @@ bool WebAssemblyTargetInfo::initFeatureMap(
     Features["half-precision"] = true;
     Features["multimemory"] = true;
     Features["nontrapping-fptoint"] = true;
-    Features["reference-types"] = true;
     Features["tail-call"] = true;
     setSIMDLevel(Features, RelaxedSIMD, true);
   };
diff --git a/clang/test/Preprocessor/wasm-target-features.c 
b/clang/test/Preprocessor/wasm-target-features.c
index 9d49e3af603f8..d5539163b3bf5 100644
--- a/clang/test/Preprocessor/wasm-target-features.c
+++ b/clang/test/Preprocessor/wasm-target-features.c
@@ -164,6 +164,7 @@
 //
 // GENERIC-INCLUDE-DAG: #define __wasm_multivalue__ 1{{$}}
 // GENERIC-INCLUDE-DAG: #define __wasm_mutable_globals__ 1{{$}}
+// GENERIC-INCLUDE-DAG: #define __wasm_reference_types__ 1{{$}}
 // GENERIC-INCLUDE-DAG: #define __wasm_sign_ext__ 1{{$}}
 //
 // RUN: %clang -E -dM %s -o - 2>&1 \
@@ -180,7 +181,6 @@
 // GENERIC-NOT: #define __wasm_half_precision__ 1{{$}}
 // GENERIC-NOT: #define __wasm_multimemory__ 1{{$}}
 // GENERIC-NOT: #define __wasm_nontrapping_fptoint__ 1{{$}}
-// GENERIC-NOT: #define __wasm_reference_types__ 1{{$}}
 // GENERIC-NOT: #define __wasm_relaxed_simd__ 1{{$}}
 // GENERIC-NOT: #define __wasm_simd128__ 1{{$}}
 // GENERIC-NOT: #define __wasm_tail_call__ 1{{$}}

``````````

</details>


https://github.com/llvm/llvm-project/pull/93261
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