forked from OSchip/llvm-project
134 lines
4.5 KiB
Plaintext
134 lines
4.5 KiB
Plaintext
// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple nvptx-unknown-unknown | 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 zeroinitializer
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// CHECK: @_ZZ5func1vE1a = internal addrspace(3) global float 0.000000e+00
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// CHECK: @_ZZ5func2vE1a = internal addrspace(3) global [256 x float] zeroinitializer
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// CHECK: @_ZZ5func3vE1a = internal addrspace(3) global float 0.000000e+00
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// CHECK: @_ZZ5func4vE1a = internal addrspace(3) global float 0.000000e+00
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// CHECK: @b = addrspace(3) global float undef
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// CHECK: @c = addrspace(3) global %struct.c undef
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// CHECK @d = addrspace(3) global %struct.d 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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static int li;
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(1)* @_ZZ3foovE2li to i32*)
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li++;
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__constant__ int lj;
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// CHECK: load i32, i32* addrspacecast (i32 addrspace(4)* @_ZZ3foovE2lj to i32*)
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lj++;
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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** %ap
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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]*), i32 0, i32 128), float** %ap
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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** %ap
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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** %ap
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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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struct StructWithCtor {
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__device__ StructWithCtor(): data(1) {}
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__device__ StructWithCtor(const StructWithCtor &second): data(second.data) {}
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__device__ int getData() { return data; }
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int data;
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};
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__device__ int construct_shared_struct() {
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// CHECK-LABEL: define i32 @_Z23construct_shared_structv()
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__shared__ StructWithCtor s;
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// CHECK: call void @_ZN14StructWithCtorC1Ev(%struct.StructWithCtor* addrspacecast (%struct.StructWithCtor addrspace(3)* @_ZZ23construct_shared_structvE1s to %struct.StructWithCtor*))
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__shared__ StructWithCtor t(s);
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// CHECK: call void @_ZN14StructWithCtorC1ERKS_(%struct.StructWithCtor* addrspacecast (%struct.StructWithCtor addrspace(3)* @_ZZ23construct_shared_structvE1t to %struct.StructWithCtor*), %struct.StructWithCtor* dereferenceable(4) addrspacecast (%struct.StructWithCtor addrspace(3)* @_ZZ23construct_shared_structvE1s to %struct.StructWithCtor*))
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return t.getData();
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// CHECK: call i32 @_ZN14StructWithCtor7getDataEv(%struct.StructWithCtor* addrspacecast (%struct.StructWithCtor addrspace(3)* @_ZZ23construct_shared_structvE1t to %struct.StructWithCtor*))
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}
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// Make sure we allow __shared__ structures with default or empty constructors.
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struct c {
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int i;
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};
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__shared__ struct c c;
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struct d {
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int i;
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d() {}
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};
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__shared__ struct d d;
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