[wasm] OOB traps: build protected instruction list during codegen

src/compiler/code-generator.h

Index: src/compiler/code-generator.h
diff --git a/src/compiler/code-generator.h b/src/compiler/code-generator.h
index 7aed85a37f439113db8082c09112d30d4a97735c..218dd4650c3bc18a4e9cd857c9378195321c4b91 100644
--- a/src/compiler/code-generator.h
+++ b/src/compiler/code-generator.h
@@ -12,6 +12,7 @@
 #include "src/macro-assembler.h"
 #include "src/safepoint-table.h"
 #include "src/source-position-table.h"
+#include "src/wasm/wasm-module.h"
 
 namespace v8 {
 namespace internal {
@@ -51,8 +52,10 @@ class InstructionOperandIterator {
 // Generates native code for a sequence of instructions.
 class CodeGenerator final : public GapResolver::Assembler {
  public:
-  explicit CodeGenerator(Frame* frame, Linkage* linkage,
-                         InstructionSequence* code, CompilationInfo* info);
+  explicit CodeGenerator(
+      Frame* frame, Linkage* linkage, InstructionSequence* code,
+      CompilationInfo* info,
+      wasm::ProtectedInstructionList* protected_instructions = nullptr);
 
   // Generate native code.
   Handle<Code> GenerateCode();
@@ -65,6 +68,8 @@ class CodeGenerator final : public GapResolver::Assembler {
 
   Label* GetLabel(RpoNumber rpo) { return &labels_[rpo.ToSize()]; }
 
+  void AddProtectedInstruction(int instr_offset, int landing_offset);
+
  private:
   MacroAssembler* masm() { return &masm_; }
   GapResolver* resolver() { return &resolver_; }
@@ -280,6 +285,7 @@ class CodeGenerator final : public GapResolver::Assembler {
   OutOfLineCode* ools_;
   int osr_pc_offset_;
   SourcePositionTableBuilder source_position_table_builder_;
+  wasm::ProtectedInstructionList* protected_instructions_;
 };
 
 }  // namespace compiler