[turbofan] add WasmObject to Turbofan types

Bug: v8:12185
Change-Id: I7d5fbf624fff262b7777e443b12cb7a72d6165e5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3293404
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#78067}

src/compiler/types.h

@@ -132,9 +132,10 @@ namespace compiler {
   V(SandboxedExternalPointer, uint64_t{1} << 30)  \
   V(CagedPointer,             uint64_t{1} << 31)
 
-// For future use.
-// Types defined in the high 32 bit are currently only supported in C++.
-#define PROPER_ATOMIC_BITSET_TYPE_HIGH_LIST(V)
+// We split the macro list into two parts because the Torque equivalent in
+// turbofan-types.tq uses two 32bit bitfield structs.
+#define PROPER_ATOMIC_BITSET_TYPE_HIGH_LIST(V)  \
+  V(WasmObject,               uint64_t{1} << 32)
 
 #define PROPER_BITSET_TYPE_LIST(V) \
   V(None,                     uint64_t{0}) \
@@ -199,7 +200,7 @@ namespace compiler {
   V(DetectableReceiver,           kDetectableObject | kProxy) \
   V(DetectableReceiverOrNull,     kDetectableReceiver | kNull) \
   V(Object,                       kDetectableObject | kOtherUndetectable) \
-  V(Receiver,                     kObject | kProxy) \
+  V(Receiver,                     kObject | kProxy | kWasmObject) \
   V(ReceiverOrUndefined,          kReceiver | kUndefined) \
   V(ReceiverOrNullOrUndefined,    kReceiver | kNull | kUndefined) \
   V(SymbolOrReceiver,             kSymbol | kReceiver) \

src/objects/turbofan-types.tq

@@ -48,7 +48,7 @@ bitfield struct TurbofanTypeLowBits extends uint32 {
 }
 
 bitfield struct TurbofanTypeHighBits extends uint32 {
-  _unused_field: bool: 1 bit;
+  wasm_object: bool: 1 bit;
 }
 
 @export
@@ -85,7 +85,9 @@ macro IsMinusZero(x: float64): bool {
 
 macro TestTurbofanBitsetType(
     value: Object, bitsetLow: TurbofanTypeLowBits,
-    _bitsetHigh: TurbofanTypeHighBits): bool {
+    bitsetHigh: TurbofanTypeHighBits): bool {
+  // Silence unused warnings on builds that don't need {bitsetHigh}.
+  const _unused = bitsetHigh;
   typeswitch (value) {
     case (value: Number): {
       const valueF = Convert<float64>(value);
@@ -163,6 +165,10 @@ macro TestTurbofanBitsetType(
         return bitsetLow.other_object;
       }
     }
+    @if(V8_ENABLE_WEBASSEMBLY)
+    case (WasmObject): {
+      return bitsetHigh.wasm_object;
+    }
     case (Object): {
       return false;
     }

src/torque/torque-parser.cc

@@ -54,6 +54,11 @@ class BuildFlags : public ContextualClass<BuildFlags> {
     build_flags_["V8_SCRIPTORMODULE_LEGACY_LIFETIME"] = true;
 #else
     build_flags_["V8_SCRIPTORMODULE_LEGACY_LIFETIME"] = false;
+#endif
+#ifdef V8_ENABLE_WEBASSEMBLY
+    build_flags_["V8_ENABLE_WEBASSEMBLY"] = true;
+#else
+    build_flags_["V8_ENABLE_WEBASSEMBLY"] = false;
 #endif
   }
   static bool GetFlag(const std::string& name, const char* production) {