commit ee4e5bc61fa0c5aeda57cfdb346e5892b988d1ca
author Chris Lattner <sabre@nondot.org> Fri Feb 05 21:21:06 2010 +0000
committer Chris Lattner <sabre@nondot.org> Fri Feb 05 21:21:06 2010 +0000
tree eaa5204f14eaee473b0c8a0d3801269f89dc8cdf
parent d39a840075c9e44fa1defe9bc3dba133ed2eb4bd

teach X86MCInstLower to lower the MOV32r0 and MOV8r0 
pseudo instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95433 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/AsmPrinter/X86MCInstLower.cpp

diff --git a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
index 20bb795..6e0614a 100644
--- a/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
+++ b/lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
@@ -374,12 +374,20 @@
   case X86::MOVZX64rm8:   LowerSubReg32_Op0(OutMI, X86::MOVZX32rm8); break;
   case X86::MOVZX64rr16:  LowerSubReg32_Op0(OutMI, X86::MOVZX32rr16); break;
   case X86::MOVZX64rm16:  LowerSubReg32_Op0(OutMI, X86::MOVZX32rm16); break;
-  case X86::MOV16r0:      LowerSubReg32_Op0(OutMI, X86::MOV32r0); break;
-  case X86::MOV64r0:      LowerSubReg32_Op0(OutMI, X86::MOV32r0); break;
   case X86::SETB_C8r:     LowerUnaryToTwoAddr(OutMI, X86::SBB8rr); break;
   case X86::SETB_C16r:    LowerUnaryToTwoAddr(OutMI, X86::SBB16rr); break;
   case X86::SETB_C32r:    LowerUnaryToTwoAddr(OutMI, X86::SBB32rr); break;
   case X86::SETB_C64r:    LowerUnaryToTwoAddr(OutMI, X86::SBB64rr); break;
+  case X86::MOV8r0:       LowerUnaryToTwoAddr(OutMI, X86::XOR8rr); break;
+  case X86::MOV32r0:      LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); break;
+  case X86::MOV16r0:
+    LowerSubReg32_Op0(OutMI, X86::MOV32r0);   // MOV16r0 -> MOV32r0
+    LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr
+    break;
+  case X86::MOV64r0:
+    LowerSubReg32_Op0(OutMI, X86::MOV32r0);   // MOV64r0 -> MOV32r0
+    LowerUnaryToTwoAddr(OutMI, X86::XOR32rr); // MOV32r0 -> XOR32rr
+    break;
   }
 }