Emulate vector square root intrinsic.
Bug b/64034197
Change-Id: I2d77dcb2f93b21abeb0eac1dcb8ca02ef6e5796b
Reviewed-on: https://swiftshader-review.googlesource.com/10957
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Reactor/SubzeroReactor.cpp b/src/Reactor/SubzeroReactor.cpp
index 6c2adf0..49163a7 100644
--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -6833,14 +6833,27 @@
RValue<Float4> Sqrt(RValue<Float4> x)
{
- Ice::Variable *result = ::function->makeVariable(Ice::IceType_v4f32);
- const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::Sqrt, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
- auto target = ::context->getConstantUndef(Ice::IceType_i32);
- auto sqrt = Ice::InstIntrinsicCall::create(::function, 1, result, target, intrinsic);
- sqrt->addArg(x.value);
- ::basicBlock->appendInst(sqrt);
+ if(emulateIntrinsics)
+ {
+ Float4 result;
+ result.x = Sqrt(Float(Float4(x).x));
+ result.y = Sqrt(Float(Float4(x).y));
+ result.z = Sqrt(Float(Float4(x).z));
+ result.w = Sqrt(Float(Float4(x).w));
- return RValue<Float4>(V(result));
+ return result;
+ }
+ else
+ {
+ Ice::Variable *result = ::function->makeVariable(Ice::IceType_v4f32);
+ const Ice::Intrinsics::IntrinsicInfo intrinsic = {Ice::Intrinsics::Sqrt, Ice::Intrinsics::SideEffects_F, Ice::Intrinsics::ReturnsTwice_F, Ice::Intrinsics::MemoryWrite_F};
+ auto target = ::context->getConstantUndef(Ice::IceType_i32);
+ auto sqrt = Ice::InstIntrinsicCall::create(::function, 1, result, target, intrinsic);
+ sqrt->addArg(x.value);
+ ::basicBlock->appendInst(sqrt);
+
+ return RValue<Float4>(V(result));
+ }
}
RValue<Float4> Insert(RValue<Float4> x, RValue<Float> element, int i)
