================
@@ -805,6 +811,64 @@ bool
SPIRVPrepareFunctionsImpl::removeAggregateTypesFromCalls(Function *F) {
return true;
}
+static inline bool isTargetSpecificASCast(unsigned SrcAS, unsigned DstAS,
+ const Triple &TT) {
+ static const unsigned GenericAS =
+ storageClassToAddressSpace(SPIRV::StorageClass::Generic, TT);
+ static const unsigned BufferFatPointerAS = AMDGPUAS::BUFFER_FAT_POINTER;
+ static const unsigned BufferResourceAS = AMDGPUAS::BUFFER_RESOURCE;
+ static const unsigned UniformConstAS =
+ storageClassToAddressSpace(SPIRV::StorageClass::UniformConstant, TT);
+
+ static const std::pair<unsigned, unsigned> Casts[] = {
+ {GenericAS, BufferFatPointerAS}, {GenericAS, BufferResourceAS},
+ {BufferFatPointerAS, GenericAS}, {BufferFatPointerAS, BufferResourceAS},
+ {BufferResourceAS, GenericAS}, {BufferResourceAS, BufferFatPointerAS},
+ {GenericAS, UniformConstAS}, {UniformConstAS, GenericAS}
+ };
+
+ return find(Casts, std::make_pair(SrcAS, DstAS));
+}
+
+static bool substituteInvalidAddrSpaceCasts(Function *F) {
+ // AMDGPU supports a superset of the AS casts allowed by SPIR-V, specifically
+ // - casts to/from UniformConstant from/to Generic
+ // - casts to/from Input from/to Output (these are actually buffer specific
----------------
AlexVlx wrote:
This is actually wrong / vestigial.
https://github.com/llvm/llvm-project/pull/199376
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