[wasm] Annotate some more {Code} mutation sites.

R=clemensh@chromium.org
BUG=v8:6792

Change-Id: Ida4a0c063232a01c9526d478530fc9adf1e6ee24
Reviewed-on: https://chromium-review.googlesource.com/756740
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#49181}

test/cctest/compiler/test-run-machops.cc

@@ -6912,6 +6912,8 @@ TEST(Regression6640) {
   for (RelocIterator it(*code,
                         1 << RelocInfo::WASM_FUNCTION_TABLE_SIZE_REFERENCE);
        !it.done(); it.next()) {
+    // TODO(6792): No longer needed once WebAssembly code is off heap.
+    CodeSpaceMemoryModificationScope modification_scope(code->GetHeap());
     it.rinfo()->update_wasm_function_table_size_reference(
         code->GetIsolate(), old_value, new_value, FLUSH_ICACHE_IF_NEEDED);
   }

test/cctest/compiler/test-run-wasm-machops.cc

@@ -24,6 +24,8 @@ static void UpdateFunctionTableSizeReferences(Handle<Code> code,
                                               uint32_t old_size,
                                               uint32_t new_size) {
   Isolate* isolate = CcTest::i_isolate();
+  // TODO(6792): No longer needed once WebAssembly code is off heap.
+  CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
   bool modified = false;
   int mode_mask =
       RelocInfo::ModeMask(RelocInfo::WASM_FUNCTION_TABLE_SIZE_REFERENCE);

test/cctest/test-run-wasm-relocation-arm.cc

@@ -55,6 +55,8 @@ TEST(WasmRelocationArmContextReference) {
   // Relocating references by offset
   int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
+    // TODO(6792): No longer needed once WebAssembly code is off heap.
+    CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
     DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
     it.rinfo()->set_wasm_context_reference(
         isolate, it.rinfo()->wasm_context_reference() + offset,

test/cctest/test-run-wasm-relocation-arm64.cc

@@ -60,6 +60,8 @@ TEST(WasmRelocationArm64ContextReference) {
   // Relocating reference by offset
   int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
+    // TODO(6792): No longer needed once WebAssembly code is off heap.
+    CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
     DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
     it.rinfo()->set_wasm_context_reference(
         isolate, it.rinfo()->wasm_context_reference() + offset,

test/cctest/test-run-wasm-relocation-ia32.cc

@@ -64,6 +64,8 @@ TEST(WasmRelocationIa32ContextReference) {
   // Relocating references by offset
   int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
+    // TODO(6792): No longer needed once WebAssembly code is off heap.
+    CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
     DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
     it.rinfo()->set_wasm_context_reference(
         isolate, it.rinfo()->wasm_context_reference() + offset,

test/cctest/test-run-wasm-relocation-x64.cc

@@ -60,6 +60,8 @@ TEST(WasmRelocationX64ContextReference) {
   // Relocating references by offset
   int mode_mask = (1 << RelocInfo::WASM_CONTEXT_REFERENCE);
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
+    // TODO(6792): No longer needed once WebAssembly code is off heap.
+    CodeSpaceMemoryModificationScope modification_scope(isolate->heap());
     DCHECK(RelocInfo::IsWasmContextReference(it.rinfo()->rmode()));
     it.rinfo()->set_wasm_context_reference(
         isolate, it.rinfo()->wasm_context_reference() + offset,