MIPS: Fix 'Assembler support for internal references.'

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 8907b6a4727ca47b512c7d74e32eee2d23bcde84..eb00f8a7e640c619f7ddc04885201ead18a1f5ac 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -393,6 +393,11 @@ class RelocInfo {
     NONE64,             // never recorded 64-bit value
     CODE_AGE_SEQUENCE,  // Not stored in RelocInfo array, used explictly by
                         // code aging.
+
+    // Encoded internal reference, used only on MIPS and MIPS64.
+    // Re-uses previous ARM-only encoding, to fit in RealRelocMode space.
+    INTERNAL_REFERENCE_ENCODED = CONST_POOL,
+
     FIRST_REAL_RELOC_MODE = CODE_TARGET,
     LAST_REAL_RELOC_MODE = VENEER_POOL,
     FIRST_PSEUDO_RELOC_MODE = CODE_AGE_SEQUENCE,
@@ -465,6 +470,9 @@ class RelocInfo {
   static inline bool IsInternalReference(Mode mode) {
     return mode == INTERNAL_REFERENCE;
   }
+  static inline bool IsInternalReferenceEncoded(Mode mode) {
+    return mode == INTERNAL_REFERENCE_ENCODED;
+  }
   static inline bool IsDebugBreakSlot(Mode mode) {
     return mode == DEBUG_BREAK_SLOT;
   }