diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
--- a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -111,6 +111,15 @@
 
       {codeview::RegisterId::EFLAGS, X86::EFLAGS},
 
+      {codeview::RegisterId::ST0, X86::ST0},
+      {codeview::RegisterId::ST1, X86::ST1},
+      {codeview::RegisterId::ST2, X86::ST2},
+      {codeview::RegisterId::ST3, X86::ST3},
+      {codeview::RegisterId::ST4, X86::ST4},
+      {codeview::RegisterId::ST5, X86::ST5},
+      {codeview::RegisterId::ST6, X86::ST6},
+      {codeview::RegisterId::ST7, X86::ST7},
+
       {codeview::RegisterId::ST0, X86::FP0},
       {codeview::RegisterId::ST1, X86::FP1},
       {codeview::RegisterId::ST2, X86::FP2},