[SYCL] Fix static|dynamic_address_cast to generic
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SPIRV operations are defined such that `OpGenericCastToPtr` and `OpGenericCastToPtrExplicit` cannot be used when target `Storage Class` is `Generic`, yet we were generating such code. This PR fixes that.
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static|dynamic_address_cast to genericFix castsstatic|dynamic_address_cast to generic
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aelovikov-intel
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Sep 13, 2024
| // CHECK-LABEL: define dso_local spir_func void @_ZN14static_as_cast20to_generic_decoratedEPi( | ||
| // CHECK-SAME: ptr addrspace(4) dead_on_unwind noalias nocapture writable writeonly sret(%"class.sycl::_V1::multi_ptr.1") align 8 [[AGG_RESULT:%.*]], ptr addrspace(4) noundef [[P:%.*]]) local_unnamed_addr #[[ATTR2:[0-9]+]] !srcloc [[META22:![0-9]+]] !sycl_fixed_targets [[META7]] { | ||
| // CHECK-NEXT: [[ENTRY:.*:]] | ||
| // CHECK-NEXT: store ptr addrspace(4) [[P]], ptr addrspace(4) [[AGG_RESULT]], align 8, !tbaa [[TBAA23:![0-9]+]], !alias.scope [[META25:![0-9]+]] |
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Use per-commit diff to see how this PR affects code generation here. First commit is test-only without functional changes.
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againull
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Sep 13, 2024
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Pennycook
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| // TODO: Remove this restriction. | ||
| static_assert(std::is_same_v<ElementType, remove_decoration_t<ElementType>>, | ||
| "The extension expect undecorated raw pointers only!"); |
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Out of curiosity: is this something that would be difficult to fix? Why not just use remove_decoration_t to create an undecorated raw pointer here, and then use the undecorated pointer for the rest of the function?
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I plan to do that in the next PR(s). It has to come with the doc change as well.
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This became possible sometime after one/all of * intel#15394 * intel#15543 * intel#16604
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SPIRV operations are defined such that
OpGenericCastToPtrandOpGenericCastToPtrExplicitcannot be used when targetStorage Classis
Generic, yet we were generating such code. This PR fixes that.