Emulate MultiplyHigh intrinsics.

Bug b/37496856 Change-Id: Ifea992edcb97d178e079a39d2a1b6b604cfa657e Reviewed-on: https://swiftshader-review.googlesource.com/10956Tested-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Emulate MultiplyHigh intrinsics.
6c15744a · Nicolas Capens · Nicolas Capens · 8960fbfe · 6c15744a
Commit 6c15744a authored Jul 25, 2017 by Nicolas Capens Committed by Nicolas Capens Jul 26, 2017
Hide whitespace changes
Inline Side-by-side

Showing with 42 additions and 16 deletions

SubzeroReactor.cpp src/Reactor/SubzeroReactor.cpp +42 -16

No files found.
--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -3583,15 +3583,28 @@ namespace sw
 	RValue<Short4> MulHigh(RValue<Short4> x, RValue<Short4> y)
 	{
-		Ice::Variable *result = ::function->makeVariable(Ice::IceType_v8i16);
+		if(emulateIntrinsics)
-		const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::MultiplyHighSigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
+		{
-		auto target = ::context->getConstantUndef(Ice::IceType_i32);
+			Short4 result;
-		auto pmulhw = Ice::InstIntrinsicCall::create(::function, 2, result, target, intrinsic);
+			result = Insert(result, Short((Int(Extract(x, 0)) * Int(Extract(y, 0))) >> 16), 0);
-		pmulhw->addArg(x.value);
+			result = Insert(result, Short((Int(Extract(x, 1)) * Int(Extract(y, 1))) >> 16), 1);
-		pmulhw->addArg(y.value);
+			result = Insert(result, Short((Int(Extract(x, 2)) * Int(Extract(y, 2))) >> 16), 2);
-		::basicBlock->appendInst(pmulhw);
+			result = Insert(result, Short((Int(Extract(x, 3)) * Int(Extract(y, 3))) >> 16), 3);
-		return RValue<Short4>(V(result));
+			return result;
+		}
+		else
+		{
+			Ice::Variable *result = ::function->makeVariable(Ice::IceType_v8i16);
+			const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::MultiplyHighSigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
+			auto target = ::context->getConstantUndef(Ice::IceType_i32);
+			auto pmulhw = Ice::InstIntrinsicCall::create(::function, 2, result, target, intrinsic);
+			pmulhw->addArg(x.value);
+			pmulhw->addArg(y.value);
+			::basicBlock->appendInst(pmulhw);
+			return RValue<Short4>(V(result));
+		}
 	}
 	RValue<Int2> MulAdd(RValue<Short4> x, RValue<Short4> y)
@@ -3986,15 +3999,28 @@ namespace sw
 	RValue<UShort4> MulHigh(RValue<UShort4> x, RValue<UShort4> y)
 	{
-		Ice::Variable *result = ::function->makeVariable(Ice::IceType_v8i16);
+		if(emulateIntrinsics)
-		const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::MultiplyHighUnsigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
+		{
-		auto target = ::context->getConstantUndef(Ice::IceType_i32);
+			UShort4 result;
-		auto pmulhuw = Ice::InstIntrinsicCall::create(::function, 2, result, target, intrinsic);
+			result = Insert(result, UShort((UInt(Extract(x, 0)) * UInt(Extract(y, 0))) >> 16), 0);
-		pmulhuw->addArg(x.value);
+			result = Insert(result, UShort((UInt(Extract(x, 1)) * UInt(Extract(y, 1))) >> 16), 1);
-		pmulhuw->addArg(y.value);
+			result = Insert(result, UShort((UInt(Extract(x, 2)) * UInt(Extract(y, 2))) >> 16), 2);
-		::basicBlock->appendInst(pmulhuw);
+			result = Insert(result, UShort((UInt(Extract(x, 3)) * UInt(Extract(y, 3))) >> 16), 3);
-		return RValue<UShort4>(V(result));
+			return result;
+		}
+		else
+		{
+			Ice::Variable *result = ::function->makeVariable(Ice::IceType_v8i16);
+			const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::MultiplyHighUnsigned, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
+			auto target = ::context->getConstantUndef(Ice::IceType_i32);
+			auto pmulhuw = Ice::InstIntrinsicCall::create(::function, 2, result, target, intrinsic);
+			pmulhuw->addArg(x.value);
+			pmulhuw->addArg(y.value);
+			::basicBlock->appendInst(pmulhuw);
+			return RValue<UShort4>(V(result));
+		}
 	}
 	RValue<UShort4> Average(RValue<UShort4> x, RValue<UShort4> y)