emitIAS for movsx and movzx.

src/assembler_ia32.cpp

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===- subzero/src/assembler_ia32.cpp - Assembler for x86-32  -------------===//
 //
 //                        The Subzero Code Generator
 //
@@ skipping 171 matching lines @@
     EmitUint8(0xC6);
     EmitOperand(0, dst);
     EmitUint8(imm.value() & 0xFF);
   } else {
     EmitUint8(0xC7);
     EmitOperand(0, dst);
     EmitImmediate(Ty, imm);
   }
 }
 
-void AssemblerX86::movzxb(GPRRegister dst, ByteRegister src) {
+void AssemblerX86::movzx(Type SrcTy, GPRRegister dst, GPRRegister src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  bool ByteSized = isByteSizedType(SrcTy);
+  assert(ByteSized || SrcTy == IceType_i16);
   EmitUint8(0x0F);
-  EmitUint8(0xB6);
+  EmitUint8(ByteSized ? 0xB6 : 0xB7);
   EmitRegisterOperand(dst, src);
 }
 
-void AssemblerX86::movzxb(GPRRegister dst, const Address &src) {
+void AssemblerX86::movzx(Type SrcTy, GPRRegister dst, const Address &src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  bool ByteSized = isByteSizedType(SrcTy);
+  assert(ByteSized || SrcTy == IceType_i16);
   EmitUint8(0x0F);
-  EmitUint8(0xB6);
+  EmitUint8(ByteSized ? 0xB6 : 0xB7);
   EmitOperand(dst, src);
 }
 
-void AssemblerX86::movsxb(GPRRegister dst, ByteRegister src) {
+void AssemblerX86::movsx(Type SrcTy, GPRRegister dst, GPRRegister src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  bool ByteSized = isByteSizedType(SrcTy);
+  assert(ByteSized || SrcTy == IceType_i16);
   EmitUint8(0x0F);
-  EmitUint8(0xBE);
+  EmitUint8(ByteSized ? 0xBE : 0xBF);
   EmitRegisterOperand(dst, src);
 }
 
-void AssemblerX86::movsxb(GPRRegister dst, const Address &src) {
+void AssemblerX86::movsx(Type SrcTy, GPRRegister dst, const Address &src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  bool ByteSized = isByteSizedType(SrcTy);
+  assert(ByteSized || SrcTy == IceType_i16);
   EmitUint8(0x0F);
-  EmitUint8(0xBE);
+  EmitUint8(ByteSized ? 0xBE : 0xBF);
   EmitOperand(dst, src);
 }
 
-void AssemblerX86::movzxw(GPRRegister dst, GPRRegister src) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0x0F);
-  EmitUint8(0xB7);
-  EmitRegisterOperand(dst, src);
-}
-
-void AssemblerX86::movzxw(GPRRegister dst, const Address &src) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0x0F);
-  EmitUint8(0xB7);
-  EmitOperand(dst, src);
-}
-
-void AssemblerX86::movsxw(GPRRegister dst, GPRRegister src) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0x0F);
-  EmitUint8(0xBF);
-  EmitRegisterOperand(dst, src);
-}
-
-void AssemblerX86::movsxw(GPRRegister dst, const Address &src) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0x0F);
-  EmitUint8(0xBF);
-  EmitOperand(dst, src);
-}
-
 void AssemblerX86::lea(Type Ty, GPRRegister dst, const Address &src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   assert(Ty == IceType_i16 || Ty == IceType_i32);
   if (Ty == IceType_i16)
     EmitOperandSizeOverride();
   EmitUint8(0x8D);
   EmitOperand(dst, src);
 }
 
 void AssemblerX86::cmov(CondX86::BrCond cond, GPRRegister dst,
@@ skipping 2234 matching lines @@
   assert(shifter == RegX8632::Encoded_Reg_ecx);
   (void)shifter;
   if (Ty == IceType_i16)
     EmitOperandSizeOverride();
   EmitUint8(isByteSizedArithType(Ty) ? 0xD2 : 0xD3);
   EmitOperand(rm, operand);
 }
 
 } // end of namespace x86
 } // end of namespace Ice