b008ea304d
For -fgpu-rdc, shadow variables should not be internalized, otherwise they cannot be accessed by other TUs. This is necessary because the shadow variable of external device variables are always emitted as undefined symbols, which need to resolve to a global symbols. Managed variables need to be emitted as undefined symbols in device compilations. Reviewed by: Artem Belevich Differential Revision: https://reviews.llvm.org/D95901
279 lines
14 KiB
Plaintext
279 lines
14 KiB
Plaintext
// RUN: echo "GPU binary would be here" > %t
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=8.0 -fcuda-include-gpubinary %t -o - \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s \
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// RUN: --check-prefixes=ALL,LNX,NORDC,CUDA,CUDANORDC,CUDA-OLD
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=8.0 -fcuda-include-gpubinary %t \
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// RUN: -o - -DNOGLOBALS \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s \
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// RUN: -check-prefixes=NOGLOBALS,CUDANOGLOBALS
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=8.0 -fgpu-rdc -fcuda-include-gpubinary %t \
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// RUN: -o - \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s \
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// RUN: --check-prefixes=ALL,LNX,RDC,CUDA,CUDARDC,CUDA-OLD
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=8.0 -o - \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s -check-prefix=NOGPUBIN
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=9.2 -fcuda-include-gpubinary %t -o - \
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// RUN: | FileCheck %s -allow-deprecated-dag-overlap \
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// RUN: --check-prefixes=ALL,LNX,NORDC,CUDA,CUDANORDC,CUDA-NEW
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=9.2 -fcuda-include-gpubinary %t -o - -DNOGLOBALS \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s \
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// RUN: --check-prefixes=NOGLOBALS,CUDANOGLOBALS
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=9.2 -fgpu-rdc -fcuda-include-gpubinary %t -o - \
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// RUN: | FileCheck %s -allow-deprecated-dag-overlap \
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// RUN: --check-prefixes=ALL,LNX,RDC,CUDA,CUDARDC,CUDA-NEW
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -std=c++17 \
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// RUN: -target-sdk-version=9.2 -fcuda-include-gpubinary %t -o - \
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// RUN: | FileCheck %s -allow-deprecated-dag-overlap \
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// RUN: --check-prefixes=ALL,LNX,NORDC,CUDA,CUDANORDC,CUDA-NEW,LNX_17,NORDC17
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -std=c++17 \
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// RUN: -target-sdk-version=9.2 -fgpu-rdc -fcuda-include-gpubinary %t -o - \
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// RUN: | FileCheck %s -allow-deprecated-dag-overlap \
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// RUN: --check-prefixes=ALL,LNX,RDC,CUDA,CUDARDC,CUDA-NEW,LNX_17,RDC17
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -target-sdk-version=9.2 -o - \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s -check-prefix=NOGPUBIN
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -fcuda-include-gpubinary %t -o - -x hip\
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s --check-prefixes=ALL,LNX,NORDC,HIP,HIPEF
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -fcuda-include-gpubinary %t -o - -DNOGLOBALS -x hip \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s -check-prefixes=NOGLOBALS,HIPNOGLOBALS
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s \
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// RUN: -fgpu-rdc -fcuda-include-gpubinary %t -o - -x hip \
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s --check-prefixes=ALL,LNX,RDC,HIP,HIPEF
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm %s -o - -x hip\
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s -check-prefixes=ALL,LNX,NORDC,HIP,HIPNEF
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// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -aux-triple amdgcn -emit-llvm %s \
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// RUN: -fcuda-include-gpubinary %t -o - -x hip\
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// RUN: | FileCheck -allow-deprecated-dag-overlap %s --check-prefixes=ALL,WIN
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#include "Inputs/cuda.h"
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#ifndef NOGLOBALS
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// NORDC-DAG: @device_var = internal global i32
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// RDC-DAG: @device_var = dso_local global i32
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// WIN-DAG: @"?device_var@@3HA" = internal global i32
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__device__ int device_var;
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// NORDC-DAG: @constant_var = internal global i32
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// RDC-DAG: @constant_var = dso_local global i32
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// WIN-DAG: @"?constant_var@@3HA" = internal global i32
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__constant__ int constant_var;
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// NORDC-DAG: @shared_var = internal global i32
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// RDC-DAG: @shared_var = dso_local global i32
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// WIN-DAG: @"?shared_var@@3HA" = internal global i32
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__shared__ int shared_var;
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// Make sure host globals don't get internalized...
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// LNX-DAG: @host_var ={{.*}} global i32
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// WIN-DAG: @"?host_var@@3HA" = dso_local global i32
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int host_var;
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// ... and that extern vars remain external.
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// LNX-DAG: @ext_host_var = external global i32
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// WIN-DAG: @"?ext_host_var@@3HA" = external dso_local global i32
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extern int ext_host_var;
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// external device-side variables -> extern references to their shadows.
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// LNX-DAG: @ext_device_var = external global i32
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// WIN-DAG: @"?ext_device_var@@3HA" = external dso_local global i32
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extern __device__ int ext_device_var;
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// LNX-DAG: @ext_device_var = external global i32
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// WIN-DAG: @"?ext_constant_var@@3HA" = external dso_local global i32
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extern __constant__ int ext_constant_var;
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// external device-side variables with definitions should generate
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// definitions for the shadows.
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// NORDC-DAG: @ext_device_var_def = internal global i32 undef,
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// RDC-DAG: @ext_device_var_def = dso_local global i32 undef,
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// WIN-DAG: @"?ext_device_var_def@@3HA" = internal global i32 undef
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extern __device__ int ext_device_var_def;
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__device__ int ext_device_var_def = 1;
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// NORDC-DAG: @ext_device_var_def = internal global i32 undef,
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// RDC-DAG: @ext_device_var_def = dso_local global i32 undef,
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// WIN-DAG: @"?ext_constant_var_def@@3HA" = internal global i32 undef
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__constant__ int ext_constant_var_def = 2;
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#if __cplusplus > 201402L
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// NORDC17: @inline_var = internal global i32 undef, comdat, align 4{{$}}
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// RDC17: @inline_var = linkonce_odr global i32 undef, comdat, align 4{{$}}
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// NORDC17: @_ZN1C17member_inline_varE = internal constant i32 undef, comdat, align 4{{$}}
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// RDC17: @_ZN1C17member_inline_varE = linkonce_odr constant i32 undef, comdat, align 4{{$}}
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__device__ inline int inline_var = 3;
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struct C {
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__device__ static constexpr int member_inline_var = 4;
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};
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#endif
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void use_pointers() {
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const int *p;
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p = &device_var;
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p = &constant_var;
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p = &shared_var;
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p = &host_var;
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p = &ext_device_var;
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p = &ext_constant_var;
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p = &ext_host_var;
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#if __cplusplus > 201402L
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p = &inline_var;
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p = &C::member_inline_var;
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#endif
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}
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// Make sure that all parts of GPU code init/cleanup are there:
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// * constant unnamed string with the device-side kernel name to be passed to
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// __hipRegisterFunction/__cudaRegisterFunction.
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// ALL: @0 = private unnamed_addr constant [18 x i8] c"_Z10kernelfunciii\00"
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// * constant unnamed string with the device-side kernel name to be passed to
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// __hipRegisterVar/__cudaRegisterVar.
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// ALL: @1 = private unnamed_addr constant [11 x i8] c"device_var\00"
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// ALL: @2 = private unnamed_addr constant [13 x i8] c"constant_var\00"
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// ALL: @3 = private unnamed_addr constant [19 x i8] c"ext_device_var_def\00"
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// ALL: @4 = private unnamed_addr constant [21 x i8] c"ext_constant_var_def\00"
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// * constant unnamed string with GPU binary
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// CUDA: @[[FATBIN:.*]] = private constant{{.*GPU binary would be here.*}}\00",
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// HIPEF: @[[FATBIN:.*]] = private constant{{.*GPU binary would be here.*}}\00",{{.*}}align 4096
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// HIPNEF: @[[FATBIN:__hip_fatbin]] = external constant i8, section ".hip_fatbin"
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// CUDANORDC-SAME: section ".nv_fatbin", align 8
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// CUDARDC-SAME: section "__nv_relfatbin", align 8
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// * constant struct that wraps GPU binary
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// ALL: @__[[PREFIX:cuda|hip]]_fatbin_wrapper = internal constant
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// LNX-SAME: { i32, i32, i8*, i8* }
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// CUDA-SAME: { i32 1180844977, i32 1,
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// HIP-SAME: { i32 1212764230, i32 1,
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// CUDA-SAME: i8* getelementptr inbounds ({{.*}}@[[FATBIN]], i64 0, i64 0),
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// HIPEF-SAME: i8* getelementptr inbounds ({{.*}}@[[FATBIN]], i64 0, i64 0),
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// HIPNEF-SAME: i8* @[[FATBIN]],
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// LNX-SAME: i8* null }
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// CUDA-SAME: section ".nvFatBinSegment"
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// HIP-SAME: section ".hipFatBinSegment"
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// * variable to save GPU binary handle after initialization
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// CUDANORDC: @__[[PREFIX]]_gpubin_handle = internal global i8** null
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// HIPNEF: @__[[PREFIX]]_gpubin_handle = linkonce hidden global i8** null
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// * constant unnamed string with NVModuleID
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// CUDARDC: [[MODULE_ID_GLOBAL:@.*]] = private constant
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// CUDARDC-SAME: c"[[MODULE_ID:.+]]\00", section "__nv_module_id", align 32
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// * Make sure our constructor was added to global ctor list.
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// LNX: @llvm.global_ctors = appending global {{.*}}@__[[PREFIX]]_module_ctor
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// * Alias to global symbol containing the NVModuleID.
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// CUDARDC: @__fatbinwrap[[MODULE_ID]] ={{.*}} alias { i32, i32, i8*, i8* }
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// CUDARDC-SAME: { i32, i32, i8*, i8* }* @__[[PREFIX]]_fatbin_wrapper
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// Test that we build the correct number of calls to cudaSetupArgument followed
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// by a call to cudaLaunch.
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// LNX: define{{.*}}kernelfunc
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// New launch sequence stores arguments into local buffer and passes array of
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// pointers to them directly to cudaLaunchKernel
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// CUDA-NEW: alloca
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// CUDA-NEW: store
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// CUDA-NEW: store
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// CUDA-NEW: store
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// CUDA-NEW: call{{.*}}__cudaPopCallConfiguration
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// CUDA-NEW: call{{.*}}cudaLaunchKernel
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// Legacy style launch sequence sets up arguments by passing them to
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// [cuda|hip]SetupArgument.
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// CUDA-OLD: call{{.*}}[[PREFIX]]SetupArgument
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// CUDA-OLD: call{{.*}}[[PREFIX]]SetupArgument
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// CUDA-OLD: call{{.*}}[[PREFIX]]SetupArgument
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// CUDA-OLD: call{{.*}}[[PREFIX]]Launch
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// HIP: call{{.*}}[[PREFIX]]SetupArgument
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// HIP: call{{.*}}[[PREFIX]]SetupArgument
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// HIP: call{{.*}}[[PREFIX]]SetupArgument
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// HIP: call{{.*}}[[PREFIX]]Launch
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__global__ void kernelfunc(int i, int j, int k) {}
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// Test that we've built correct kernel launch sequence.
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// LNX: define{{.*}}hostfunc
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// CUDA-OLD: call{{.*}}[[PREFIX]]ConfigureCall
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// CUDA-NEW: call{{.*}}__cudaPushCallConfiguration
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// HIP: call{{.*}}[[PREFIX]]ConfigureCall
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// LNX: call{{.*}}kernelfunc
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void hostfunc(void) { kernelfunc<<<1, 1>>>(1, 1, 1); }
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#endif
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// Test that we've built a function to register kernels and global vars.
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// ALL: define internal void @__[[PREFIX]]_register_globals
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// ALL: call{{.*}}[[PREFIX]]RegisterFunction(i8** %0, {{.*}}kernelfunc{{[^,]*}}, {{[^@]*}}@0
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// ALL-DAG: call void {{.*}}[[PREFIX]]RegisterVar(i8** %0, {{.*}}device_var{{[^,]*}}, {{[^@]*}}@1, {{.*}}i32 0, {{i32|i64}} 4, i32 0, i32 0
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// ALL-DAG: call void {{.*}}[[PREFIX]]RegisterVar(i8** %0, {{.*}}constant_var{{[^,]*}}, {{[^@]*}}@2, {{.*}}i32 0, {{i32|i64}} 4, i32 1, i32 0
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// ALL-DAG: call void {{.*}}[[PREFIX]]RegisterVar(i8** %0, {{.*}}ext_device_var_def{{[^,]*}}, {{[^@]*}}@3, {{.*}}i32 0, {{i32|i64}} 4, i32 0, i32 0
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// ALL-DAG: call void {{.*}}[[PREFIX]]RegisterVar(i8** %0, {{.*}}ext_constant_var_def{{[^,]*}}, {{[^@]*}}@4, {{.*}}i32 0, {{i32|i64}} 4, i32 1, i32 0
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// LNX_17-NOT: [[PREFIX]]RegisterVar(i8** %0, {{.*}}inline_var
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// ALL: ret void
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// Test that we've built a constructor.
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// LNX: define internal void @__[[PREFIX]]_module_ctor
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// In separate mode it calls __[[PREFIX]]RegisterFatBinary(&__[[PREFIX]]_fatbin_wrapper)
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// HIP only register fat binary once.
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// HIP: load i8**, i8*** @__hip_gpubin_handle
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// HIP-NEXT: icmp eq i8** {{.*}}, null
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// HIP-NEXT: br i1 {{.*}}, label %if, label %exit
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// HIP: if:
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// CUDANORDC: call{{.*}}[[PREFIX]]RegisterFatBinary{{.*}}__[[PREFIX]]_fatbin_wrapper
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// .. stores return value in __[[PREFIX]]_gpubin_handle
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// CUDANORDC-NEXT: store{{.*}}__[[PREFIX]]_gpubin_handle
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// .. and then calls __[[PREFIX]]_register_globals
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// HIP: call{{.*}}[[PREFIX]]RegisterFatBinary{{.*}}__[[PREFIX]]_fatbin_wrapper
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// .. stores return value in __[[PREFIX]]_gpubin_handle
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// HIP-NEXT: store{{.*}}__[[PREFIX]]_gpubin_handle
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// .. and then calls __[[PREFIX]]_register_globals
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// HIP-NEXT: br label %exit
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// HIP: exit:
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// HIP-NEXT: load i8**, i8*** @__hip_gpubin_handle
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// CUDANORDC-NEXT: call void @__[[PREFIX]]_register_globals
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// HIP-NEXT: call void @__[[PREFIX]]_register_globals
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// * In separate mode we also register a destructor.
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// CUDANORDC-NEXT: call i32 @atexit(void (i8*)* @__[[PREFIX]]_module_dtor)
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// HIP-NEXT: call i32 @atexit(void (i8*)* @__[[PREFIX]]_module_dtor)
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// With relocatable device code we call __[[PREFIX]]RegisterLinkedBinary%NVModuleID%
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// CUDARDC: call{{.*}}__[[PREFIX]]RegisterLinkedBinary[[MODULE_ID]](
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// CUDARDC-SAME: __[[PREFIX]]_register_globals, {{.*}}__[[PREFIX]]_fatbin_wrapper
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// CUDARDC-SAME: [[MODULE_ID_GLOBAL]]
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// Test that we've created destructor.
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// CUDANORDC: define internal void @__[[PREFIX]]_module_dtor
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// HIP: define internal void @__[[PREFIX]]_module_dtor
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// CUDANORDC: load{{.*}}__[[PREFIX]]_gpubin_handle
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// HIP: load{{.*}}__[[PREFIX]]_gpubin_handle
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// CUDANORDC-NEXT: call void @__[[PREFIX]]UnregisterFatBinary
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// HIP-NEXT: icmp ne i8** {{.*}}, null
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// HIP-NEXT: br i1 {{.*}}, label %if, label %exit
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// HIP: if:
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// HIP-NEXT: call void @__[[PREFIX]]UnregisterFatBinary
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// HIP-NEXT: store i8** null, i8*** @__hip_gpubin_handle
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// HIP-NEXT: br label %exit
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// HIP: exit:
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// There should be no __[[PREFIX]]_register_globals if we have no
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// device-side globals, but we still need to register GPU binary.
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// Skip GPU binary string first.
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// CUDANOGLOBALS-NOT: @{{.*}} = private constant{{.*}}
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// HIPNOGLOBALS-NOT: @{{.*}} = internal constant{{.*}}
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// NOGLOBALS-NOT: define internal void @__{{.*}}_register_globals
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// NOGLOBALS-NOT: define internal void @__[[PREFIX:cuda|hip]]_module_ctor
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// NOGLOBALS-NOT: call{{.*}}[[PREFIX]]RegisterFatBinary{{.*}}__[[PREFIX]]_fatbin_wrapper
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// NOGLOBALS-NOT: call void @__[[PREFIX]]_register_globals
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// NOGLOBALS-NOT: define internal void @__[[PREFIX]]_module_dtor
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// NOGLOBALS-NOT: call void @__[[PREFIX]]UnregisterFatBinary
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// There should be no constructors/destructors if we have no GPU binary.
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// NOGPUBIN-NOT: define internal void @__[[PREFIX]]_register_globals
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// NOGPUBIN-NOT: define internal void @__[[PREFIX]]_module_ctor
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// NOGPUBIN-NOT: define internal void @__[[PREFIX]]_module_dtor
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