Enable Short8 and UShort8 construction from pointer dereference.

Change-Id: I09efd94974a520b790ab1d3fe9e8dc91295948f9
Reviewed-on: https://swiftshader-review.googlesource.com/5762
Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>

src/Reactor/Nucleus.cpp

diff --git a/src/Reactor/Nucleus.cpp b/src/Reactor/Nucleus.cpp
index 820bdd5..2c18dc7 100644
--- a/src/Reactor/Nucleus.cpp
+++ b/src/Reactor/Nucleus.cpp
@@ -3558,6 +3558,14 @@
 		storeValue(rhs.value);
 	}
 
+	Short8::Short8(const Reference<Short8> &rhs)
+	{
+	//	xyzw.parent = this;
+
+		Value *value = rhs.loadValue();
+		storeValue(value);
+	}
+
 	Short8::Short8(RValue<Short4> lo, RValue<Short4> hi)
 	{
 		Value *loLong = Nucleus::createBitCast(lo.value, Long::getType());
@@ -3643,6 +3651,14 @@
 		storeValue(rhs.value);
 	}
 
+	UShort8::UShort8(const Reference<UShort8> &rhs)
+	{
+	//	xyzw.parent = this;
+
+		Value *value = rhs.loadValue();
+		storeValue(value);
+	}
+
 	UShort8::UShort8(RValue<UShort4> lo, RValue<UShort4> hi)
 	{
 		Value *loLong = Nucleus::createBitCast(lo.value, Long::getType());