Index: llvm/trunk/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ llvm/trunk/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -116,6 +116,15 @@
       {codeview::RegisterId::ST6, X86::FP6},
       {codeview::RegisterId::ST7, X86::FP7},
 
+      {codeview::RegisterId::MM0, X86::MM0},
+      {codeview::RegisterId::MM1, X86::MM1},
+      {codeview::RegisterId::MM2, X86::MM2},
+      {codeview::RegisterId::MM3, X86::MM3},
+      {codeview::RegisterId::MM4, X86::MM4},
+      {codeview::RegisterId::MM5, X86::MM5},
+      {codeview::RegisterId::MM6, X86::MM6},
+      {codeview::RegisterId::MM7, X86::MM7},
+
       {codeview::RegisterId::XMM0, X86::XMM0},
       {codeview::RegisterId::XMM1, X86::XMM1},
       {codeview::RegisterId::XMM2, X86::XMM2},