================
@@ -323,6 +327,83 @@ llvm::Type
*CommonSPIRTargetCodeGenInfo::getOpenCLType(CodeGenModule &CGM,
return nullptr;
}
+llvm::Type *CommonSPIRTargetCodeGenInfo::getHLSLType(CodeGenModule &CGM,
+ const Type *Ty) const {
+ auto *ResType = dyn_cast<HLSLAttributedResourceType>(Ty);
+ if (!ResType)
+ return nullptr;
+
+ llvm::LLVMContext &Ctx = CGM.getLLVMContext();
+ const HLSLAttributedResourceType::Attributes &ResAttrs = ResType->getAttrs();
+ switch (ResAttrs.ResourceClass) {
+ case llvm::dxil::ResourceClass::UAV:
+ case llvm::dxil::ResourceClass::SRV: {
+ // TypedBuffer and RawBuffer both need element type
+ QualType ContainedTy = ResType->getContainedType();
+ if (ContainedTy.isNull())
+ return nullptr;
+
+ assert(!ResAttrs.RawBuffer &&
+ "Raw buffers handles are not implemented for SPIR-V yet");
+ assert(!ResAttrs.IsROV &&
+ "Rasterizer order views not implemented for SPIR-V yet");
+
+ // convert element type
+ llvm::Type *ElemType = CGM.getTypes().ConvertType(ContainedTy);
+ return getSPIRVImageTypeFromHLSLResource(ResAttrs, ElemType, Ctx);
+ }
+ case llvm::dxil::ResourceClass::CBuffer:
+ llvm_unreachable("CBuffer handles are not implemented for SPIR-V yet");
+ break;
+ case llvm::dxil::ResourceClass::Sampler:
+ return llvm::TargetExtType::get(Ctx, "spirv.Sampler");
+ }
+ return nullptr;
+}
+
+llvm::Type *CommonSPIRTargetCodeGenInfo::getSPIRVImageTypeFromHLSLResource(
+ const HLSLAttributedResourceType::Attributes &attributes,
+ llvm::Type *ElementType, llvm::LLVMContext &Ctx) const {
+
+ if (ElementType->isVectorTy()) {
+ ElementType = ElementType->getScalarType();
+ }
+
+ if (!ElementType->isIntegerTy() && !ElementType->isFloatingPointTy()) {
+ // TODO: Should there be an error message?
+ ElementType->dump();
+ assert(false && "Bad element type");
+ return nullptr;
+ }
+
+ // For HLSL types, the depth is always 2.
+ SmallVector<unsigned, 6> IntParams = {0, 2, 0, 0, 1, 0};
----------------
Keenuts wrote:
Since those are written just below, I'd just set this to `= { 0 }` instead, and
then explain each bit as you do.
In addition, maybe a comment saying those are listed in
https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#OpTypeImage ?
https://github.com/llvm/llvm-project/pull/114273
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