Subzero: x86-64: Allow immediates in 64-bit instructions.

src/IceAssemblerX86BaseImpl.h

Index: src/IceAssemblerX86BaseImpl.h
diff --git a/src/IceAssemblerX86BaseImpl.h b/src/IceAssemblerX86BaseImpl.h
index 554f533cd94ab4f0d2cddb432e8a8d8a8288fe28..85d930282a0e9983d6df0478a0bd888879ce21af 100644
--- a/src/IceAssemblerX86BaseImpl.h
+++ b/src/IceAssemblerX86BaseImpl.h
@@ -295,7 +295,6 @@ void AssemblerX86Base<TraitsType>::mov(Type Ty, const Address &dst,
 template <typename TraitsType>
 void AssemblerX86Base<TraitsType>::mov(Type Ty, const Address &dst,
                                        const Immediate &imm) {
-  assert(Ty != IceType_i64 && "i64 not supported yet.");
   AssemblerBuffer::EnsureCapacity ensured(&Buffer);
   if (Ty == IceType_i16)
     emitOperandSizeOverride();
@@ -2641,7 +2640,7 @@ template <typename TraitsType>
 void AssemblerX86Base<TraitsType>::imul(Type Ty, GPRRegister reg,
                                         const Immediate &imm) {
   AssemblerBuffer::EnsureCapacity ensured(&Buffer);
-  assert(Ty == IceType_i16 || Ty == IceType_i32);
+  assert(Ty == IceType_i16 || Ty == IceType_i32 || Ty == IceType_i64);
   if (Ty == IceType_i16)
     emitOperandSizeOverride();
   emitRexRB(Ty, reg, reg);