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// slang-target.cpp
#include "slang-target.h"
#include "../core/slang-type-text-util.h"
#include "compiler-core/slang-artifact-desc-util.h"
#include "slang-compiler.h"
#include "slang-type-layout.h"
namespace Slang
{
bool isHeterogeneousTarget(CodeGenTarget target)
{
return ArtifactDescUtil::makeDescForCompileTarget(asExternal(target)).style ==
ArtifactStyle::Host;
}
void printDiagnosticArg(StringBuilder& sb, CodeGenTarget val)
{
UnownedStringSlice name = TypeTextUtil::getCompileTargetName(asExternal(val));
name = name.getLength() ? name : toSlice("<unknown>");
sb << name;
}
//
// TargetRequest
//
TargetRequest::TargetRequest(Linkage* linkage, CodeGenTarget format)
: linkage(linkage)
{
optionSet = linkage->m_optionSet;
optionSet.add(CompilerOptionName::Target, format);
}
TargetRequest::TargetRequest(const TargetRequest& other)
: RefObject(), linkage(other.linkage), optionSet(other.optionSet)
{
}
Session* TargetRequest::getSession()
{
return linkage->getSessionImpl();
}
HLSLToVulkanLayoutOptions* TargetRequest::getHLSLToVulkanLayoutOptions()
{
if (!hlslToVulkanOptions)
{
hlslToVulkanOptions = new HLSLToVulkanLayoutOptions();
hlslToVulkanOptions->loadFromOptionSet(optionSet);
}
return hlslToVulkanOptions.get();
}
void TargetRequest::setTargetCaps(CapabilitySet capSet)
{
cookedCapabilities = capSet;
}
CapabilitySet TargetRequest::getTargetCaps()
{
if (!cookedCapabilities.isEmpty())
return cookedCapabilities;
// The full `CapabilitySet` for the target will be computed
// from the combination of the code generation format, and
// the profile.
//
// Note: the preofile might have been set in a way that is
// inconsistent with the output code format of SPIR-V, but
// a profile of Direct3D Shader Model 5.1. In those cases,
// the format should always override the implications in
// the profile.
//
// TODO: This logic isn't currently taking int account
// the information in the profile, because the current
// `CapabilityAtom`s that we support don't include any
// of the details there (e.g., the shader model versions).
//
// Eventually, we'd want to have a rich set of capability
// atoms, so that most of the information about what operations
// are available where can be directly encoded on the declarations.
List<CapabilityName> atoms;
// If the user specified a explicit profile, we should pull
// a corresponding atom representing the target version from the profile.
CapabilitySet profileCaps = optionSet.getProfile().getCapabilityName();
bool isGLSLTarget = false;
switch (getTarget())
{
case CodeGenTarget::GLSL:
isGLSLTarget = true;
atoms.add(CapabilityName::glsl);
break;
case CodeGenTarget::SPIRV:
case CodeGenTarget::SPIRVAssembly:
if (getOptionSet().shouldEmitSPIRVDirectly())
{
// Default to SPIRV 1.5 if the user has not specified a target version.
bool hasTargetVersionAtom = false;
if (!profileCaps.isEmpty())
{
profileCaps.join(CapabilitySet(CapabilityName::spirv_1_0));
for (auto profileCapAtomSet : profileCaps.getAtomSets())
{
for (auto atom : profileCapAtomSet)
{
if (isTargetVersionAtom(asAtom(atom)))
{
atoms.add((CapabilityName)atom);
hasTargetVersionAtom = true;
}
}
}
}
if (!hasTargetVersionAtom)
{
atoms.add(CapabilityName::spirv_1_5);
}
// If the user specified any SPIR-V extensions in the profile,
// pull them in.
for (auto profileCapAtomSet : profileCaps.getAtomSets())
{
for (auto atom : profileCapAtomSet)
{
if (isSpirvExtensionAtom(asAtom(atom)))
{
atoms.add((CapabilityName)atom);
hasTargetVersionAtom = true;
}
}
}
}
else
{
isGLSLTarget = true;
atoms.add(CapabilityName::glsl);
profileCaps.addSpirvVersionFromOtherAsGlslSpirvVersion(profileCaps);
}
break;
case CodeGenTarget::HLSL:
case CodeGenTarget::DXBytecode:
case CodeGenTarget::DXBytecodeAssembly:
case CodeGenTarget::DXIL:
case CodeGenTarget::DXILAssembly:
atoms.add(CapabilityName::hlsl);
break;
case CodeGenTarget::CSource:
atoms.add(CapabilityName::c);
break;
case CodeGenTarget::CPPSource:
case CodeGenTarget::PyTorchCppBinding:
case CodeGenTarget::HostExecutable:
case CodeGenTarget::ShaderSharedLibrary:
case CodeGenTarget::HostSharedLibrary:
case CodeGenTarget::HostHostCallable:
case CodeGenTarget::ShaderHostCallable:
atoms.add(CapabilityName::cpp);
break;
case CodeGenTarget::CUDASource:
case CodeGenTarget::PTX:
atoms.add(CapabilityName::cuda);
break;
case CodeGenTarget::Metal:
case CodeGenTarget::MetalLib:
case CodeGenTarget::MetalLibAssembly:
atoms.add(CapabilityName::metal);
break;
case CodeGenTarget::WGSLSPIRV:
case CodeGenTarget::WGSLSPIRVAssembly:
case CodeGenTarget::WGSL:
atoms.add(CapabilityName::wgsl);
break;
default:
break;
}
CapabilitySet targetCap = CapabilitySet(atoms);
if (profileCaps.atLeastOneSetImpliedInOther(targetCap) ==
CapabilitySet::ImpliesReturnFlags::Implied)
targetCap.join(profileCaps);
for (auto atomVal : optionSet.getArray(CompilerOptionName::Capability))
{
CapabilitySet toAdd;
switch (atomVal.kind)
{
case CompilerOptionValueKind::Int:
toAdd = CapabilitySet(CapabilityName(atomVal.intValue));
break;
case CompilerOptionValueKind::String:
toAdd = CapabilitySet(findCapabilityName(atomVal.stringValue.getUnownedSlice()));
break;
}
if (isGLSLTarget)
targetCap.addSpirvVersionFromOtherAsGlslSpirvVersion(toAdd);
if (!targetCap.isIncompatibleWith(toAdd))
targetCap.join(toAdd);
}
cookedCapabilities = targetCap;
SLANG_ASSERT(!cookedCapabilities.isInvalid());
return cookedCapabilities;
}
TypeLayout* TargetRequest::getTypeLayout(Type* type, slang::LayoutRules rules)
{
SLANG_AST_BUILDER_RAII(getLinkage()->getASTBuilder());
// TODO: We are not passing in a `ProgramLayout` here, although one
// is nominally required to establish the global ordering of
// generic type parameters, which might be referenced from field types.
//
// The solution here is to make sure that the reflection data for
// uses of global generic/existential types does *not* include any
// kind of index in that global ordering, and just refers to the
// parameter instead (leaving the user to figure out how that
// maps to the ordering via some API on the program layout).
//
auto layoutContext = getInitialLayoutContextForTarget(this, nullptr, rules);
RefPtr<TypeLayout> result;
auto key = TypeLayoutKey{type, rules};
if (getTypeLayouts().tryGetValue(key, result))
return result.Ptr();
result = createTypeLayout(layoutContext, type);
getTypeLayouts()[key] = result;
return result.Ptr();
}
} // namespace Slang
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