forked from OSchip/llvm-project
112 lines
4.5 KiB
Plaintext
112 lines
4.5 KiB
Plaintext
// RUN: %clang_cc1 -emit-llvm %s -fcuda-include-gpubinary %s -o - | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm %s -fcuda-include-gpubinary %s -o - -DNOGLOBALS \
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// RUN: | FileCheck %s -check-prefix=NOGLOBALS
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// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s -check-prefix=NOGPUBIN
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#include "Inputs/cuda.h"
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#ifndef NOGLOBALS
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// CHECK-DAG: @device_var = internal global i32
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__device__ int device_var;
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// CHECK-DAG: @constant_var = internal global i32
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__constant__ int constant_var;
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// CHECK-DAG: @shared_var = 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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// CHECK-DAG: @host_var = global i32
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int host_var;
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// ... and that extern vars remain external.
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// CHECK-DAG: @ext_host_var = external global i32
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extern int ext_host_var;
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// Shadows for external device-side variables are *definitions* of
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// those variables.
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// CHECK-DAG: @ext_device_var = internal global i32
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extern __device__ int ext_device_var;
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// CHECK-DAG: @ext_device_var = internal global i32
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extern __constant__ int ext_constant_var;
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void use_pointers() {
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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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}
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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 kernel name
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// CHECK: private unnamed_addr constant{{.*}}kernelfunc{{.*}}\00"
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// * constant unnamed string with GPU binary
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// CHECK: private unnamed_addr constant{{.*}}\00"
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// * constant struct that wraps GPU binary
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// CHECK: @__cuda_fatbin_wrapper = internal constant { i32, i32, i8*, i8* }
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// CHECK: { i32 1180844977, i32 1, {{.*}}, i8* null }
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// * variable to save GPU binary handle after initialization
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// CHECK: @__cuda_gpubin_handle = internal global i8** null
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// * Make sure our constructor/destructor was added to global ctor/dtor list.
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// CHECK: @llvm.global_ctors = appending global {{.*}}@__cuda_module_ctor
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// CHECK: @llvm.global_dtors = appending global {{.*}}@__cuda_module_dtor
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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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// CHECK: define{{.*}}kernelfunc
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// CHECK: call{{.*}}cudaSetupArgument
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// CHECK: call{{.*}}cudaSetupArgument
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// CHECK: call{{.*}}cudaSetupArgument
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// CHECK: call{{.*}}cudaLaunch
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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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// CHECK: define{{.*}}hostfunc
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// CHECK: call{{.*}}cudaConfigureCall
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// CHECK: 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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// CHECK: define internal void @__cuda_register_globals
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// CHECK: call{{.*}}cudaRegisterFunction(i8** %0, {{.*}}kernelfunc
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// CHECK-DAG: call{{.*}}cudaRegisterVar(i8** %0, {{.*}}device_var{{.*}}i32 0, i32 4, i32 0, i32 0
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// CHECK-DAG: call{{.*}}cudaRegisterVar(i8** %0, {{.*}}constant_var{{.*}}i32 0, i32 4, i32 1, i32 0
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// CHECK-DAG: call{{.*}}cudaRegisterVar(i8** %0, {{.*}}ext_device_var{{.*}}i32 1, i32 4, i32 0, i32 0
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// CHECK-DAG: call{{.*}}cudaRegisterVar(i8** %0, {{.*}}ext_constant_var{{.*}}i32 1, i32 4, i32 1, i32 0
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// CHECK: ret void
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// Test that we've built contructor..
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// CHECK: define internal void @__cuda_module_ctor
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// .. that calls __cudaRegisterFatBinary(&__cuda_fatbin_wrapper)
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// CHECK: call{{.*}}cudaRegisterFatBinary{{.*}}__cuda_fatbin_wrapper
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// .. stores return value in __cuda_gpubin_handle
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// CHECK-NEXT: store{{.*}}__cuda_gpubin_handle
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// .. and then calls __cuda_register_globals
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// CHECK-NEXT: call void @__cuda_register_globals
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// Test that we've created destructor.
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// CHECK: define internal void @__cuda_module_dtor
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// CHECK: load{{.*}}__cuda_gpubin_handle
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// CHECK-NEXT: call void @__cudaUnregisterFatBinary
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// There should be no __cuda_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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// NOGLOBALS: @0 = private unnamed_addr constant{{.*}}
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// NOGLOBALS-NOT: define internal void @__cuda_register_globals
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// NOGLOBALS: define internal void @__cuda_module_ctor
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// NOGLOBALS: call{{.*}}cudaRegisterFatBinary{{.*}}__cuda_fatbin_wrapper
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// NOGLOBALS-NOT: call void @__cuda_register_globals
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// NOGLOBALS: define internal void @__cuda_module_dtor
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// NOGLOBALS: call void @__cudaUnregisterFatBinary
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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 @__cuda_register_globals
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// NOGPUBIN-NOT: define internal void @__cuda_module_ctor
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// NOGPUBIN-NOT: define internal void @__cuda_module_dtor
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