emitIAS for fld and fstp

src/IceRegistersX8632.h

Index: src/IceRegistersX8632.h
diff --git a/src/IceRegistersX8632.h b/src/IceRegistersX8632.h
index 851908c3af7525b13764bcbdc845436cd761d4b7..86ace82533abdd46c013f7c8c214f584862084b5 100644
--- a/src/IceRegistersX8632.h
+++ b/src/IceRegistersX8632.h
@@ -36,7 +36,7 @@ enum AllRegisters {
 #undef X
 };
 
-// An enum of GPR Registers. The enum value does match encoding used
+// An enum of GPR Registers. The enum value does match the encoding used
 // to binary encode register operands in instructions.
 enum GPRRegister {
 #define X(val, encode, name, name16, name8, scratch, preserved, stackptr,      \
@@ -47,7 +47,7 @@ enum GPRRegister {
       Encoded_Not_GPR = -1
 };
 
-// An enum of XMM Registers. The enum value does match encoding used
+// An enum of XMM Registers. The enum value does match the encoding used
 // to binary encode register operands in instructions.
 enum XmmRegister {
 #define X(val, encode, name, name16, name8, scratch, preserved, stackptr,      \
@@ -58,7 +58,7 @@ enum XmmRegister {
       Encoded_Not_Xmm = -1
 };
 
-// An enum of Byte Registers. The enum value does match encoding used
+// An enum of Byte Registers. The enum value does match the encoding used
 // to binary encode register operands in instructions.
 enum ByteRegister {
 #define X(val, encode) Encoded_##val encode,
@@ -67,6 +67,15 @@ enum ByteRegister {
       Encoded_Not_ByteReg = -1
 };
 
+// An enum of X87 Stack Registers. The enum value does match the encoding used
+// to binary encode register operands in instructions.
+enum X87STRegister {
+#define X(val, encode, name) Encoded_##val encode,
+  X87ST_REGX8632_TABLE
+#undef X
+      Encoded_Not_X87STReg = -1
+};
+
 static inline GPRRegister getEncodedGPR(int32_t RegNum) {
   assert(Reg_GPR_First <= RegNum && RegNum <= Reg_GPR_Last);
   return GPRRegister(RegNum - Reg_GPR_First);
@@ -91,6 +100,11 @@ static inline GPRRegister getEncodedByteRegOrGPR(Type Ty, int32_t RegNum) {
     return getEncodedGPR(RegNum);
 }
 
+static inline X87STRegister getEncodedSTReg(int32_t RegNum) {
+  assert(Encoded_X87ST_First <= RegNum && RegNum <= Encoded_X87ST_Last);
+  return X87STRegister(RegNum);
+}
+
 } // end of namespace RegX8632
 
 } // end of namespace Ice