Introduce bytecodes for assisting generator suspend and resume.

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index aa4f9dee275510ec7df5b43f00a8e7253ef21468..07eb2e39ddf247c886a701120da9a49aec828efb 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -68,6 +68,7 @@ class CodeStubAssembler : public compiler::CodeAssembler {
   compiler::Node* SmiMin(compiler::Node* a, compiler::Node* b);
 
   // Allocate an object of the given size.
+  compiler::Node* Allocate(compiler::Node* size, AllocationFlags flags = kNone);
   compiler::Node* Allocate(int size, AllocationFlags flags = kNone);
   compiler::Node* InnerAllocate(compiler::Node* previous, int offset);
 
@@ -123,6 +124,8 @@ class CodeStubAssembler : public compiler::CodeAssembler {
   // Load the instance size of a Map.
   compiler::Node* LoadMapInstanceSize(compiler::Node* map);
 
+  compiler::Node* AllocateUninitializedFixedArray(compiler::Node* length);
+
   // Load an array element from a FixedArray.
   compiler::Node* LoadFixedArrayElementInt32Index(compiler::Node* object,
                                                   compiler::Node* int32_index,