1 files changed, 7 insertions, 6 deletions
diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
index 326251ccc2..7baa8f8717 100755
--- a/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -115,7 +115,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
     unsigned Reg = MO.getReg();
     if (Modifier && strncmp(Modifier, "trunc", strlen("trunc")) == 0) {
       MVT::ValueType VT = (strcmp(Modifier,"trunc16") == 0)
-        ? MVT::i16 : MVT::i32;
+        ? MVT::i16 : MVT::i8;
       Reg = getX86SubSuperRegister(Reg, VT);
     }
     for (const char *Name = RI.get(Reg).Name; *Name; ++Name)
@@ -366,12 +366,13 @@ void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
     const MachineOperand &MO1 = MI->getOperand(1);
     unsigned Reg0 = MO0.getReg();
     unsigned Reg1 = MO1.getReg();
-    if (MI->getOpcode() == X86::TRUNC_R16_R8)
-      Reg0 = getX86SubSuperRegister(Reg0, MVT::i16);
+    if (MI->getOpcode() == X86::TRUNC_R32_R16)
+      Reg1 = getX86SubSuperRegister(Reg1, MVT::i16);
     else
-      Reg0 = getX86SubSuperRegister(Reg0, MVT::i32);
-    if (Reg0 == Reg1)
-      O << CommentString << " TRUNCATE ";
+      Reg1 = getX86SubSuperRegister(Reg1, MVT::i8);
+    O << CommentString << " TRUNCATE ";
+    if (Reg0 != Reg1)
+      O << "\n\t";
     break;
   }
   }