35a20d7e92
SPIR-V doesn't currently have a way to encode the `externally_initialized` LLVM concept. Unfortunately, certain HIP constructs (e.g. `__managed__` or `__constant__` variables) rely on it. Hence, this patch allows AMDGCN flavoured SPIR-V to encode `externally_initialized` via the `HostAccessINTEL` decoration, which approximates some of the semantics; the decoration is handled during reverse translation. It also appears that we never fully implemented the decoration, which I intend to handle in a subsequent, independent patch.
26 lines
1.2 KiB
LLVM
26 lines
1.2 KiB
LLVM
; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
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; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s --check-prefix=CHECK-SPIRV
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32-unknown-unknown %s -o - -filetype=obj | spirv-val %}
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; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-amd-amdhsa %s -o - | FileCheck %s --check-prefix=CHECK-AMDGCNSPIRV
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; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-amd-amdhsa %s -o - -filetype=obj | spirv-val %}
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; CHECK-SPIRV: OpName %[[#G:]] "G"
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; CHECK-SPIRV-NOT: OpDecorate %[[#G]] ReferencedIndirectlyINTEL
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; CHECK-SPIRV-DAG: %[[#G]] = OpVariable
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; CHECK-AMDGCNSPIRV: OpExtension "SPV_INTEL_global_variable_host_access"
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; CHECK-AMDGCNSPIRV: OpName %[[#G:]] "G"
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; CHECK-AMDGCNSPIRV: OpDecorate %[[#G]] HostAccessINTEL 3 "G"
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; CHECK-AMDGCNSPIRV-DAG: %[[#G]] = OpVariable
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@G = external addrspace(1) externally_initialized global i32
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define spir_func i32 @foo() {
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%r = load i32, ptr addrspace(1) @G
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ret i32 %r
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}
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