[Wasm] Change externRefToAny to make it compatible with SpiderMonkey and V8

It's hard to achieve that without implementing part of `externRefToAny` using an intrinsic. It should be rewritten when all VMs and tools update to the latest spec.

Also, stop using (deprecated) instructions unsupported by SpiderMonkey.

#KT-56166 In-Progress

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmSymbols.kt

@@ -211,6 +211,7 @@ class WasmSymbols(
     val nullableDoubleIeee754Equals = getInternalFunction("nullableDoubleIeee754Equals")
 
     val unsafeGetScratchRawMemory = getInternalFunction("unsafeGetScratchRawMemory")
+    val returnArgumentIfItIsKotlinAny = getInternalFunction("returnArgumentIfItIsKotlinAny")
 
     val newJsArray = getInternalFunction("newJsArray")
     val jsArrayPush = getInternalFunction("jsArrayPush")

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -594,11 +594,23 @@ class BodyGenerator(
             }
 
             wasmSymbols.unsafeGetScratchRawMemory -> {
-                
                 body.buildConstI32Symbol(context.scratchMemAddr, location)
             }
 
-            
+            wasmSymbols.returnArgumentIfItIsKotlinAny -> {
+                body.buildBlock("returnIfAny", WasmAnyRef) { innerLabel ->
+                    body.buildGetLocal(functionContext.referenceLocal(0), location)
+                    body.buildInstr(WasmOp.EXTERN_INTERNALIZE, location)
+                    body.buildBrInstr(WasmOp.BR_ON_NON_DATA_DEPRECATED, innerLabel, location)
+                    body.buildBrInstr(
+                        WasmOp.BR_ON_CAST_FAIL_DEPRECATED,
+                        innerLabel,
+                        context.referenceGcType(backendContext.irBuiltIns.anyClass),
+                        location
+                    )
+                    body.buildInstr(WasmOp.RETURN, location)
+                }
+            }
 
             wasmSymbols.wasmArrayCopy -> {
                 val immediate = WasmImmediate.GcType(

libraries/stdlib/wasm/internal/kotlin/wasm/internal/ExternalWrapper.kt

@@ -139,6 +139,22 @@ private fun Any.asWasmExternRef(): ExternalInterfaceType =
 @JsFun("(ref) => ref == null")
 internal external fun isNullish(ref: ExternalInterfaceType?): Boolean
 
+@Suppress("UNUSED_PARAMETER")
+@ExcludedFromCodegen
+/*
+* Compiler generates inplace next code:
+* ```
+* block (result anyref) {
+*     local.get 0
+*     extern.internalize
+*     br_on_non_data_fail 0
+*     br_on_cast_fail 0 (type $kotlin.Any)
+*     return
+* }
+* ```
+*/
+internal fun returnArgumentIfItIsKotlinAny(ref: ExternalInterfaceType): Unit = implementedAsIntrinsic
+
 internal fun externRefToAny(ref: ExternalInterfaceType): Any? {
     // TODO rewrite it so to get something like:
     // block {
@@ -147,13 +163,7 @@ internal fun externRefToAny(ref: ExternalInterfaceType): Any? {
     //     return
     // }
     // If ref is an instance of kotlin class -- return it casted to Any
-    val refAsAnyref = ref.externAsWasmAnyref()
+    returnArgumentIfItIsKotlinAny(ref)
-    if (wasm_ref_is_data_deprecated(refAsAnyref)) {
-        val refAsDataRef = wasm_ref_as_data_deprecated(refAsAnyref)
-        if (wasm_ref_test_deprecated<Any>(refAsDataRef)) {
-            return wasm_ref_cast_deprecated<Any>(refAsDataRef)
-        }
-    }
 
     // If we have Null in notNullRef -- return null
     // If we already have a box -- return it,

libraries/stdlib/wasm/internal/kotlin/wasm/internal/WasmInstructions.kt

@@ -387,9 +387,3 @@ internal external fun wasm_i64_ctz(a: Long): Long
 
 @WasmOp(WasmOp.REF_IS_NULL)
 internal external fun wasm_externref_is_null(a: ExternalInterfaceType?): Boolean
-
-@WasmOp(WasmOp.REF_AS_DATA_DEPRECATED)
-internal external fun wasm_ref_as_data_deprecated(x: anyref): dataref
-
-@WasmOp(WasmOp.REF_IS_DATA_DEPRECATED)
-internal external fun wasm_ref_is_data_deprecated(x: anyref): Boolean

libraries/stdlib/wasm/src/generated/_WasmOp.kt

@@ -243,7 +243,6 @@ internal annotation class WasmOp(val name: String) {
         const val ARRAY_COPY = "ARRAY_COPY"
         const val ARRAY_NEW_DATA = "ARRAY_NEW_DATA"
         const val ARRAY_NEW_FIXED = "ARRAY_NEW_FIXED"
-        const val ARRAY_NEW_ELEM = "ARRAY_NEW_ELEM"
         const val I31_NEW = "I31_NEW"
         const val I31_GET_S = "I31_GET_S"
         const val I31_GET_U = "I31_GET_U"
@@ -252,9 +251,11 @@ internal annotation class WasmOp(val name: String) {
         const val EXTERN_EXTERNALIZE = "EXTERN_EXTERNALIZE"
         const val REF_TEST_DEPRECATED = "REF_TEST_DEPRECATED"
         const val REF_CAST_DEPRECATED = "REF_CAST_DEPRECATED"
-        const val REF_IS_DATA_DEPRECATED = "REF_IS_DATA_DEPRECATED"
-        const val REF_AS_DATA_DEPRECATED = "REF_AS_DATA_DEPRECATED"
         const val BR_ON_CAST_FAIL_DEPRECATED = "BR_ON_CAST_FAIL_DEPRECATED"
+        const val BR_ON_NON_DATA_DEPRECATED = "BR_ON_NON_DATA_DEPRECATED"
         const val GET_UNIT = "GET_UNIT"
+        const val PSEUDO_COMMENT_PREVIOUS_INSTR = "PSEUDO_COMMENT_PREVIOUS_INSTR"
+        const val PSEUDO_COMMENT_GROUP_START = "PSEUDO_COMMENT_GROUP_START"
+        const val PSEUDO_COMMENT_GROUP_END = "PSEUDO_COMMENT_GROUP_END"
     }
 }

wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/Operators.kt

@@ -397,10 +397,8 @@ enum class WasmOp(
     REF_TEST_DEPRECATED("ref.test", 0xFB_44, STRUCT_TYPE_IDX),
     REF_CAST_DEPRECATED("ref.cast", 0xFB_45, STRUCT_TYPE_IDX),
 
-    REF_IS_DATA_DEPRECATED("ref.is_data", 0xFB_51),
-    REF_AS_DATA_DEPRECATED("ref.as_data", 0xFB_59),
-
     BR_ON_CAST_FAIL_DEPRECATED("br_on_cast_fail", 0xFB_47, listOf(LABEL_IDX, STRUCT_TYPE_IDX)),
+    BR_ON_NON_DATA_DEPRECATED("br_on_non_data_fail", 0xFB_64, listOf(LABEL_IDX)),
 
     // ============================================================
     // Pseudo-instruction, just alias for a normal call. It's used to easily spot get_unit on the wasm level.