[turbofan] Frame elision for code stubs

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index d1efe1435d3a8872285de1fe2d56a77c32174392..7a8612373c99ed320082ee3ce08856cd8fd725d7 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -124,6 +124,11 @@ const int kFloatSize     = sizeof(float);     // NOLINT
 const int kDoubleSize    = sizeof(double);    // NOLINT
 const int kIntptrSize    = sizeof(intptr_t);  // NOLINT
 const int kPointerSize   = sizeof(void*);     // NOLINT
+#if V8_TARGET_ARCH_ARM64
+const int kFrameAlignmentInBytes = 2 * kPointerSize;
+#else
+const int kFrameAlignmentInBytes = kPointerSize;
+#endif
 #if V8_TARGET_ARCH_X64 && V8_TARGET_ARCH_32_BIT
 const int kRegisterSize  = kPointerSize + kPointerSize;
 #else
@@ -132,6 +137,12 @@ const int kRegisterSize  = kPointerSize;
 const int kPCOnStackSize = kRegisterSize;
 const int kFPOnStackSize = kRegisterSize;
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_IA32
+const int kElidedFrameSlots = kPCOnStackSize / kPointerSize;
+#else
+const int kElidedFrameSlots = 0;
+#endif
+
 const int kDoubleSizeLog2 = 3;
 
 #if V8_HOST_ARCH_64_BIT