/// <summary cref="IBackendCodeGenerator.GenerateCode(DynamicMemoryLengthValue)"/>
public void GenerateCode(DynamicMemoryLengthValue value)
{
if (value.AddressSpace != MemoryAddressSpace.Shared)
{
throw new InvalidCodeGenerationException();
}
// Resolve the name of the global variable containing the length of the
// shared dynamic memory buffer.
var dynamicView = value.GetFirstUseNode().ResolveAs <Alloca>();
var lengthVariableName = GetSharedMemoryAllocationLengthName(dynamicView);
// Load the dynamic memory size (in bytes) from the dynamic length variable
// and divide by the size in bytes of the array element.
var target = Allocate(value);
using var statement = BeginStatement(target);
statement.AppendCast(value.Type);
var operation = CLInstructions.GetArithmeticOperation(
BinaryArithmeticKind.Div,
value.BasicValueType.IsFloat(),
out bool isFunction);
if (isFunction)
{
statement.AppendCommand(operation);
statement.BeginArguments();
}
else
{
statement.OpenParen();
}
statement.AppendCast(dynamicView.ArrayLength.Type);
statement.AppendCommand(lengthVariableName);
if (!isFunction)
{
statement.AppendCommand(operation);
}
statement.AppendArgument();
statement.AppendCast(value.ElementType.BasicValueType);
statement.AppendConstant(value.ElementType.Size);
if (isFunction)
{
statement.EndArguments();
}
else
{
statement.CloseParen();
}
}
/// <summary cref="IBackendCodeGenerator.GenerateCode(DynamicMemoryLengthValue)"/>
public void GenerateCode(DynamicMemoryLengthValue value)
{
if (value.AddressSpace != MemoryAddressSpace.Shared)
{
throw new InvalidCodeGenerationException();
}
// Load the dynamic memory size (in bytes) from the PTX special register
// and divide by the size in bytes of the array element.
var lengthRegister = AllocateHardware(value);
var dynamicMemorySizeRegister = MoveFromIntrinsicRegister(
PTXRegisterKind.DynamicSharedMemorySize);
using var command = BeginCommand(
PTXInstructions.GetArithmeticOperation(
BinaryArithmeticKind.Div,
ArithmeticBasicValueType.UInt32,
Backend.Capabilities,
false));
command.AppendArgument(lengthRegister);
command.AppendArgument(dynamicMemorySizeRegister);
command.AppendConstant(value.ElementType.Size);
}
/// <summary cref="IValueVisitor.Visit(DynamicMemoryLengthValue)"/> public void Visit(DynamicMemoryLengthValue value) => CodeGenerator.GenerateCode(value);