[wasm] remove faux code objects

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 48f9a9a18364157a77769d60dc2d9564155ec8fa..b2e2ff97bf214fe3a457f0347d1fa2592ded2365 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -127,6 +127,11 @@ uint32_t RelocInfo::wasm_memory_size_reference() {
   return Memory::uint32_at(pc_);
 }
 
+uint32_t RelocInfo::wasm_function_index() {
+  DCHECK(IsWasmCall(rmode_));
+  return Memory::uint32_at(pc_);
+}
+
 void RelocInfo::update_wasm_memory_reference(
     Address old_base, Address new_base, uint32_t old_size, uint32_t new_size,
     ICacheFlushMode icache_flush_mode) {
@@ -888,6 +893,15 @@ void Assembler::call(Handle<Code> target,
   emit_code_target(target, rmode, ast_id);
 }
 
+void Assembler::wasm_call(uint32_t index, RelocInfo::Mode rmode) {
+  DCHECK(RelocInfo::IsWasmCall(rmode));
+  positions_recorder()->WriteRecordedPositions();
+  EnsureSpace ensure_space(this);
+  emit(0xE8);
+  RecordRelocInfo(rmode);
+
+  emitl(index);
+}
 
 void Assembler::call(Register adr) {
   positions_recorder()->WriteRecordedPositions();