[mips] support FK_Data_2 and FK_Data_8 to fix big-endian debug data

This fixes invalid lengths in .debug_aranges on big-endian mips64
(lengths appear to be left-shifted by 32 bits) and in .debug_loc.

Differential Revision: http://llvm-reviews.chandlerc.com/D2517


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202716 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Mips/MCTargetDesc/MipsAsmBackend.cpp

@@ -38,6 +38,7 @@ static unsigned adjustFixupValue(const MCFixup &Fixup, uint64_t Value,
   switch (Kind) {
   default:
     return 0;
+  case FK_Data_2:
   case FK_GPRel_4:
   case FK_Data_4:
   case FK_Data_8:
@@ -140,12 +141,15 @@ public:
     unsigned FullSize;
 
     switch ((unsigned)Kind) {
+    case FK_Data_2:
     case Mips::fixup_Mips_16:
       FullSize = 2;
       break;
+    case FK_Data_8:
     case Mips::fixup_Mips_64:
       FullSize = 8;
       break;
+    case FK_Data_4:
     default:
       FullSize = 4;
       break;