derek.holloway
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96 lines
2.9 KiB
Plaintext
96 lines
2.9 KiB
Plaintext
// 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 constant
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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, ptr addrspacecast (ptr addrspace(1) @i to ptr)
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i++;
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// CHECK: load i32, ptr addrspacecast (ptr addrspace(4) @j to ptr)
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j++;
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// CHECK: load i32, ptr addrspacecast (ptr addrspace(3) @k to ptr)
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k++;
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__shared__ int lk;
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// CHECK: load i32, ptr addrspacecast (ptr addrspace(3) @_ZZ3foovE2lk to ptr)
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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 ptr addrspacecast (ptr addrspace(3) @_ZZ5func0vE1a to ptr), ptr %{{.*}}
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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(ptr noundef addrspacecast (ptr addrspace(3) @_ZZ5func1vE1a to ptr))
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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 ptr getelementptr inbounds nuw (i8, ptr addrspacecast (ptr addrspace(3) @_ZZ5func2vE1a to ptr), i{{32|64}} 512), ptr %{{.*}}
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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 ptr addrspacecast (ptr addrspace(3) @_ZZ5func3vE1a to ptr), ptr %{{.*}}
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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 ptr addrspacecast (ptr addrspace(3) @_ZZ5func4vE1a to ptr), ptr %{{.*}}
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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{{.*}} ptr @_Z5func5v()
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// CHECK: ret ptr addrspacecast (ptr addrspace(3) @b to ptr)
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