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.
36 lines
1.6 KiB
LLVM
36 lines
1.6 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.Inner = type { i32, <4 x float> }
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%struct.Outer = type { [5 x %struct.Inner], i32 }
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; CHECK-DAG: %[[#float:]] = OpTypeFloat 32
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; CHECK-DAG: %[[#vec4:]] = OpTypeVector %[[#float]] 4
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; CHECK-DAG: %[[#int:]] = OpTypeInt 32 0
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; CHECK-DAG: %[[#Inner:]] = OpTypeStruct %[[#int]] %[[#vec4]]
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; CHECK-DAG: %[[#idx_5:]] = OpConstant %[[#int]] 5
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; CHECK-DAG: %[[#Array:]] = OpTypeArray %[[#Inner]] %[[#idx_5]]
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; CHECK-DAG: %[[#Outer:]] = OpTypeStruct %[[#Array]] %[[#int]]
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; CHECK-DAG: %[[#ptr_Outer:]] = OpTypePointer Function %[[#Outer]]
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; CHECK-DAG: %[[#ptr_float:]] = OpTypePointer Function %[[#float]]
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define spir_func float @nested_access(ptr %obj) convergent {
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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; CHECK: %[[#obj_var:]] = OpFunctionParameter %[[#ptr_Outer]]
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%1 = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%struct.Outer) %obj, i32 0, i32 2, i32 1, i32 1)
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; CHECK: %[[#ptr_elem:]] = OpInBoundsAccessChain %[[#ptr_float]] %[[#obj_var]] %[[#]] %[[#]] %[[#]] %[[#]]
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%2 = load float, ptr %1, align 4
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; CHECK: %[[#val:]] = OpLoad %[[#float]] %[[#ptr_elem]] Aligned 4
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ret float %2
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}
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declare token @llvm.experimental.convergence.entry() #1
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declare ptr @llvm.structured.gep.p0(ptr, ...) #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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