Recognize the xstorerng alias for VIA PadLock's xstore instruction.

llvm-svn: 134126

llvm/lib/Target/X86/X86InstrSystem.td

@@ -411,6 +411,8 @@ let Uses = [RDX, RAX, RCX] in
 let Defs = [RAX, RDI], Uses = [RDX, RDI] in
   def XSTORE : I<0xc0, RawFrm, (outs), (ins), "xstore", []>, A7;
 
+def : InstAlias<"xstorerng", (XSTORE)>;
+
 let Defs = [RSI, RDI], Uses = [RBX, RDX, RSI, RDI] in {
   def XCRYPTECB : I<0xc8, RawFrm, (outs), (ins), "xcryptecb", []>, A7;
   def XCRYPTCBC : I<0xd0, RawFrm, (outs), (ins), "xcryptcbc", []>, A7;

llvm/test/MC/X86/padlock.s

@@ -2,6 +2,10 @@
 
 	xstore
 // CHECK: xstore
+// CHECK: encoding: [0x0f,0xa7,0xc0]
+
+	xstorerng
+// CHECK: xstore
 // CHECK: encoding: [0x0f,0xa7,0xc0]
 
 	rep xcryptecb