091972c354
This commit adds initial support to lower the intrinsinc `@llvm.structured.gep` into proper SPIR-V. For now, the backend continues to support both GEP formats. We might want to revisit this at some point for the logical part.
33 lines
1.5 KiB
LLVM
33 lines
1.5 KiB
LLVM
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv-pc-vulkan1.3-library %s -o - | FileCheck %s
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-pc-vulkan1.3-library %s -o - -filetype=obj | spirv-val %}
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%struct.RuntimeArray = type { [0 x i32] }
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@buffer = external addrspace(11) global %struct.RuntimeArray
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; CHECK-DAG: %[[#int:]] = OpTypeInt 32 0
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; CHECK-DAG: %[[#ptr_sb_int:]] = OpTypePointer StorageBuffer %[[#int]]
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; CHECK-DAG: %[[#rt_array:]] = OpTypeRuntimeArray %[[#int]]
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; CHECK-DAG: %[[#struct:]] = OpTypeStruct %[[#rt_array]]
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; CHECK-DAG: %[[#ptr_sb_struct:]] = OpTypePointer StorageBuffer %[[#struct]]
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; CHECK-DAG: %[[#buffer:]] = OpVariable %[[#ptr_sb_struct]] StorageBuffer
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define spir_func i32 @runtime_array_access(i32 %idx) convergent {
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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%1 = call ptr addrspace(11) (ptr addrspace(11), ...) @llvm.structured.gep.p11(ptr addrspace(11) elementtype(%struct.RuntimeArray) @buffer, i32 0, i32 %idx)
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; CHECK: %[[#ptr_elem:]] = OpInBoundsAccessChain %[[#ptr_sb_int]] %[[#buffer]] %[[#]] %[[#]]
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%2 = load i32, ptr addrspace(11) %1, align 4
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; CHECK: %[[#val:]] = OpLoad %[[#int]] %[[#ptr_elem]] Aligned 4
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ret i32 %2
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}
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declare token @llvm.experimental.convergence.entry() #1
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declare ptr addrspace(11) @llvm.structured.gep.p11(ptr addrspace(11), ...) #3
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attributes #1 = { convergent nocallback nofree nosync nounwind willreturn memory(none) }
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attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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