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96 lines
3.0 KiB
96 lines
3.0 KiB
// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple nvptx-unknown-unknown | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple amdgcn | FileCheck %s
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// Verifies Clang emits correct address spaces and addrspacecast instructions
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// for CUDA code.
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#include "Inputs/cuda.h"
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// CHECK: @i = addrspace(1) externally_initialized global
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__device__ int i;
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// CHECK: @j = addrspace(4) externally_initialized global
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__constant__ int j;
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// CHECK: @k = addrspace(3) global
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__shared__ int k;
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struct MyStruct {
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int data1;
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int data2;
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};
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// CHECK: @_ZZ5func0vE1a = internal addrspace(3) global %struct.MyStruct undef
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// CHECK: @_ZZ5func1vE1a = internal addrspace(3) global float undef
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// CHECK: @_ZZ5func2vE1a = internal addrspace(3) global [256 x float] undef
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// CHECK: @_ZZ5func3vE1a = internal addrspace(3) global float undef
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// CHECK: @_ZZ5func4vE1a = internal addrspace(3) global float undef
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// CHECK: @b = addrspace(3) global float undef
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__device__ void foo() {
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(1)* @i to i32*)
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i++;
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(4)* @j to i32*)
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j++;
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(3)* @k to i32*)
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k++;
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__shared__ int lk;
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(3)* @_ZZ3foovE2lk to i32*)
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lk++;
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}
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__device__ void func0() {
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__shared__ MyStruct a;
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MyStruct *ap = &a; // composite type
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ap->data1 = 1;
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ap->data2 = 2;
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}
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// CHECK: define void @_Z5func0v()
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// CHECK: store %struct.MyStruct* addrspacecast (%struct.MyStruct addrspace(3)* @_ZZ5func0vE1a to %struct.MyStruct*), %struct.MyStruct** %{{.*}}
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__device__ void callee(float *ap) {
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*ap = 1.0f;
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}
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__device__ void func1() {
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__shared__ float a;
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callee(&a); // implicit cast from parameters
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}
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// CHECK: define void @_Z5func1v()
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// CHECK: call void @_Z6calleePf(float* addrspacecast (float addrspace(3)* @_ZZ5func1vE1a to float*))
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__device__ void func2() {
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__shared__ float a[256];
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float *ap = &a[128]; // implicit cast from a decayed array
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*ap = 1.0f;
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}
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// CHECK: define void @_Z5func2v()
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// CHECK: store float* getelementptr inbounds ([256 x float], [256 x float]* addrspacecast ([256 x float] addrspace(3)* @_ZZ5func2vE1a to [256 x float]*), i{{32|64}} 0, i{{32|64}} 128), float** %{{.*}}
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__device__ void func3() {
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__shared__ float a;
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float *ap = reinterpret_cast<float *>(&a); // explicit cast
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*ap = 1.0f;
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}
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// CHECK: define void @_Z5func3v()
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// CHECK: store float* addrspacecast (float addrspace(3)* @_ZZ5func3vE1a to float*), float** %{{.*}}
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__device__ void func4() {
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__shared__ float a;
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float *ap = (float *)&a; // explicit c-style cast
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*ap = 1.0f;
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}
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// CHECK: define void @_Z5func4v()
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// CHECK: store float* addrspacecast (float addrspace(3)* @_ZZ5func4vE1a to float*), float** %{{.*}}
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__shared__ float b;
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__device__ float *func5() {
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return &b; // implicit cast from a return value
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}
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// CHECK: define float* @_Z5func5v()
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// CHECK: ret float* addrspacecast (float addrspace(3)* @b to float*)
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