Emulate vector packing intrinsics.

Bug b/37496082 Change-Id: I993f34baf6169b0bc3c37742f6238dba38a67d0a Reviewed-on: https://swiftshader-review.googlesource.com/10955Tested-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Emulate vector packing intrinsics.
8960fbfe · Nicolas Capens · Nicolas Capens · 98436737 · 8960fbfe
Commit 8960fbfe authored Jul 25, 2017 by Nicolas Capens Committed by Nicolas Capens Jul 26, 2017
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SubzeroReactor.cpp src/Reactor/SubzeroReactor.cpp +51 -0

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--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -3609,6 +3609,22 @@ namespace sw
 	RValue<SByte8> Pack(RValue<Short4> x, RValue<Short4> y)
 	{
+		if(emulateIntrinsics)
+		{
+			SByte8 result;
+			result = Insert(result, Saturate(Extract(x, 0)), 0);
+			result = Insert(result, Saturate(Extract(x, 1)), 1);
+			result = Insert(result, Saturate(Extract(x, 2)), 2);
+			result = Insert(result, Saturate(Extract(x, 3)), 3);
+			result = Insert(result, Saturate(Extract(y, 0)), 4);
+			result = Insert(result, Saturate(Extract(y, 1)), 5);
+			result = Insert(result, Saturate(Extract(y, 2)), 6);
+			result = Insert(result, Saturate(Extract(y, 3)), 7);
+			return result;
+		}
+		else
+		{
 			Ice::Variable *result = ::function->makeVariable(Ice::IceType_v16i8);
 			const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::VectorPackSigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
 			auto target = ::context->getConstantUndef(Ice::IceType_i32);
@@ -3619,6 +3635,7 @@ namespace sw
 			return As<SByte8>(Swizzle(As<Int4>(V(result)), 0x88));
 		}
+	}
 	RValue<Int2> UnpackLow(RValue<Short4> x, RValue<Short4> y)
 	{
@@ -3987,6 +4004,22 @@ namespace sw
 	RValue<Byte8> Pack(RValue<UShort4> x, RValue<UShort4> y)
 	{
+		if(emulateIntrinsics)
+		{
+			Byte8 result;
+			result = Insert(result, Saturate(Extract(x, 0)), 0);
+			result = Insert(result, Saturate(Extract(x, 1)), 1);
+			result = Insert(result, Saturate(Extract(x, 2)), 2);
+			result = Insert(result, Saturate(Extract(x, 3)), 3);
+			result = Insert(result, Saturate(Extract(y, 0)), 4);
+			result = Insert(result, Saturate(Extract(y, 1)), 5);
+			result = Insert(result, Saturate(Extract(y, 2)), 6);
+			result = Insert(result, Saturate(Extract(y, 3)), 7);
+			return result;
+		}
+		else
+		{
 			Ice::Variable *result = ::function->makeVariable(Ice::IceType_v16i8);
 			const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::VectorPackUnsigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
 			auto target = ::context->getConstantUndef(Ice::IceType_i32);
@@ -3997,6 +4030,7 @@ namespace sw
 			return As<Byte8>(Swizzle(As<Int4>(V(result)), 0x88));
 		}
+	}
 	Type *UShort4::getType()
 	{
@@ -5862,6 +5896,22 @@ namespace sw
 	RValue<Short8> Pack(RValue<Int4> x, RValue<Int4> y)
 	{
+		if(emulateIntrinsics)
+		{
+			Short8 result;
+			result = Insert(result, Saturate(Extract(x, 0)), 0);
+			result = Insert(result, Saturate(Extract(x, 1)), 1);
+			result = Insert(result, Saturate(Extract(x, 2)), 2);
+			result = Insert(result, Saturate(Extract(x, 3)), 3);
+			result = Insert(result, Saturate(Extract(y, 0)), 4);
+			result = Insert(result, Saturate(Extract(y, 1)), 5);
+			result = Insert(result, Saturate(Extract(y, 2)), 6);
+			result = Insert(result, Saturate(Extract(y, 3)), 7);
+			return result;
+		}
+		else
+		{
 			Ice::Variable *result = ::function->makeVariable(Ice::IceType_v8i16);
 			const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::VectorPackSigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
 			auto target = ::context->getConstantUndef(Ice::IceType_i32);
@@ -5872,6 +5922,7 @@ namespace sw
 			return RValue<Short8>(V(result));
 		}
+	}
 	RValue<Int> Extract(RValue<Int4> x, int i)
 	{