Intel syntax: Parse ... PTR [-8]

llvm-svn: 148570

llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp

@@ -669,6 +669,11 @@ X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned Size) {
     return ErrorOperand(End, "expected ']' token!");
   Parser.Lex();
   End = Parser.getTok().getLoc();
+
+  // handle [-42]
+  if (!BaseReg && !IndexReg)
+    return X86Operand::CreateMem(Disp, Start, End, Size);
+
   return X86Operand::CreateMem(SegReg, Disp, BaseReg, IndexReg, Scale,
                                Start, End, Size);
 }

llvm/test/MC/X86/intel-syntax-encoding.s

@@ -34,4 +34,5 @@
 LBB0_3:
 // CHECK: encoding: [0xeb,A]
 	jmp	LBB0_3
-	
+// CHECK: encoding: [0xf2,0x0f,0x10,0x2c,0x25,0xf8,0xff,0xff,0xff]
+        movsd   XMM5, QWORD PTR [-8]