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.
40 lines
1.7 KiB
LLVM
40 lines
1.7 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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%class.Base = type { i32 }
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%class.Derived = type { %class.Base, float }
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; CHECK-DAG: %[[#int:]] = OpTypeInt 32 0
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; CHECK-DAG: %[[#float:]] = OpTypeFloat 32
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; CHECK-DAG: %[[#Base:]] = OpTypeStruct %[[#int]]
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; CHECK-DAG: %[[#Derived:]] = OpTypeStruct %[[#Base]] %[[#float]]
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; CHECK-DAG: %[[#ptr_Derived:]] = OpTypePointer Function %[[#Derived]]
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; CHECK-DAG: %[[#ptr_Base:]] = OpTypePointer Function %[[#Base]]
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; CHECK-DAG: %[[#ptr_int:]] = OpTypePointer Function %[[#int]]
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; CHECK-DAG: %[[#idx_0:]] = OpConstant %[[#int]] 0
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define spir_func void @class_access(ptr %d) convergent {
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entry:
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%0 = call token @llvm.experimental.convergence.entry()
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; CHECK: %[[#d_var:]] = OpFunctionParameter %[[#ptr_Derived]]
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; Access Base part
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%1 = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%class.Derived) %d, i32 0)
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; CHECK: %[[#ptr_base:]] = OpInBoundsAccessChain %[[#ptr_Base]] %[[#d_var]] %[[#idx_0]]
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; Access field in Base
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%2 = call ptr (ptr, ...) @llvm.structured.gep.p0(ptr elementtype(%class.Base) %1, i32 0)
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; CHECK: %[[#ptr_field:]] = OpInBoundsAccessChain %[[#ptr_int]] %[[#ptr_base]] %[[#idx_0]]
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store i32 42, ptr %2, align 4
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; CHECK: OpStore %[[#ptr_field]]
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ret void
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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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