forked from OSchip/llvm-project
214 lines
7.1 KiB
Plaintext
214 lines
7.1 KiB
Plaintext
// REQUIRES: amdgpu-registered-target
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// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device -x hip %s \
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// RUN: -std=c++17 -O3 -mllvm -amdgpu-internalize-symbols -emit-llvm -o - \
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// RUN: | FileCheck -check-prefix=DEV %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -x hip %s \
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// RUN: -std=c++17 -O3 -emit-llvm -o - | FileCheck -check-prefix=HOST %s
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// Negative tests.
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// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fcuda-is-device -x hip %s \
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// RUN: -std=c++17 -O3 -mllvm -amdgpu-internalize-symbols -emit-llvm -o - \
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// RUN: | FileCheck -check-prefix=DEV-NEG %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -x hip %s \
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// RUN: -std=c++17 -O3 -emit-llvm -o - | FileCheck -check-prefix=HOST-NEG %s
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#include "Inputs/cuda.h"
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// Check device variables used by neither host nor device functioins are not kept.
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// DEV-NEG-NOT: @v1
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__device__ int v1;
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// DEV-NEG-NOT: @v2
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__constant__ int v2;
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// DEV-NEG-NOT: @_ZL2v3
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static __device__ int v3;
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// Check device variables used by host functions are kept.
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// DEV-DAG: @u1
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__device__ int u1;
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// DEV-DAG: @u2
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__constant__ int u2;
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// Check host-used static device var is in llvm.compiler.used.
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// DEV-DAG: @_ZL2u3
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static __device__ int u3;
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// Check device-used static device var is emitted but is not in llvm.compiler.used.
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// DEV-DAG: @_ZL2u4
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static __device__ int u4;
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// Check device variables with used attribute are always kept.
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// DEV-DAG: @u5
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__device__ __attribute__((used)) int u5;
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// Test external device variable ODR-used by host code is not emitted or registered.
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// DEV-NEG-NOT: @ext_var
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extern __device__ int ext_var;
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// DEV-DAG: @inline_var = linkonce_odr addrspace(1) externally_initialized global i32 0
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__device__ inline int inline_var;
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template<typename T>
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using func_t = T (*) (T, T);
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template <typename T>
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__device__ T add_func (T x, T y)
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{
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return x + y;
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}
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// DEV-DAG: @_Z10p_add_funcIiE = linkonce_odr addrspace(1) externally_initialized global i32 (i32, i32)* @_Z8add_funcIiET_S0_S0_
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template <typename T>
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__device__ func_t<T> p_add_func = add_func<T>;
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// Check non-constant constexpr variables ODR-used by host code only is not emitted.
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// DEV-NEG-NOT: constexpr_var1a
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// DEV-NEG-NOT: constexpr_var1b
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constexpr int constexpr_var1a = 1;
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inline constexpr int constexpr_var1b = 1;
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// Check constant constexpr variables ODR-used by host code only.
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// Non-inline constexpr variable has internal linkage, therefore it is not accessible by host and not kept.
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// Inline constexpr variable has linkonce_ord linkage, therefore it can be accessed by host and kept.
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// DEV-NEG-NOT: constexpr_var2a
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// DEV-DAG: @constexpr_var2b = linkonce_odr addrspace(4) externally_initialized constant i32 2
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__constant__ constexpr int constexpr_var2a = 2;
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inline __constant__ constexpr int constexpr_var2b = 2;
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void use(func_t<int> p);
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__host__ __device__ void use(const int *p);
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// Check static device variable in host function.
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// DEV-DAG: @_ZZ4fun1vE11static_var1 = addrspace(1) externally_initialized global i32 3
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void fun1() {
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static __device__ int static_var1 = 3;
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use(&u1);
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use(&u2);
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use(&u3);
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use(&ext_var);
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use(&inline_var);
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use(p_add_func<int>);
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use(&constexpr_var1a);
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use(&constexpr_var1b);
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use(&constexpr_var2a);
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use(&constexpr_var2b);
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use(&static_var1);
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}
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// Check static variable in host device function.
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// DEV-DAG: @_ZZ4fun2vE11static_var2 = internal addrspace(1) global i32 4
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// DEV-DAG: @_ZZ4fun2vE11static_var3 = addrspace(1) global i32 4
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__host__ __device__ void fun2() {
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static int static_var2 = 4;
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static __device__ int static_var3 = 4;
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use(&static_var2);
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use(&static_var3);
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}
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__global__ void kern1(int **x) {
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*x = &u4;
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fun2();
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}
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// Check static variables of lambda functions.
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// Lambda functions are implicit host device functions.
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// Default static variables in lambda functions should be treated
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// as host variables on host side, therefore should not be forced
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// to be emitted on device.
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// DEV-DAG: @_ZZZN21TestStaticVarInLambda3funEvENKUlPcE_clES0_E4var2 = addrspace(1) externally_initialized global i32 5
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// DEV-NEG-NOT: @_ZZZN21TestStaticVarInLambda3funEvENKUlPcE_clES0_E4var1
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namespace TestStaticVarInLambda {
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class A {
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public:
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A(char *);
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};
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void fun() {
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(void) [](char *c) {
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static A var1(c);
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static __device__ int var2 = 5;
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(void) var1;
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(void) var2;
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};
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}
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}
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// Check implicit constant variable ODR-used by host code is not emitted.
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// AST contains instantiation of al<ar>, which triggers AST instantiation
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// of x::al<ar>::am, which triggers AST instatiation of x::ap<ar>,
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// which triggers AST instantiation of aw<ar>::c, which has type
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// ar. ar has base class x which has member ah. x::ah is initialized
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// with function pointer pointing to ar:as, which returns an object
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// of type ou. The constexpr aw<ar>::c is an implicit constant variable
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// which is ODR-used by host function x::ap<ar>. An incorrect implementation
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// will force aw<ar>::c to be emitted on device side, which will trigger
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// emit of x::as and further more ctor of ou and variable o.
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// The ODR-use of aw<ar>::c in x::ap<ar> should be treated as a host variable
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// instead of device variable.
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// DEV-NEG-NOT: _ZN16TestConstexprVar1oE
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namespace TestConstexprVar {
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char o;
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class ou {
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public:
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ou(char) { __builtin_strlen(&o); }
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};
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template < typename ao > struct aw { static constexpr ao c; };
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class x {
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protected:
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typedef ou (*y)(const x *);
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constexpr x(y ag) : ah(ag) {}
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template < bool * > struct ak;
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template < typename > struct al {
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static bool am;
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static ak< &am > an;
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};
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template < typename ao > static x ap() { (void)aw< ao >::c; return x(nullptr); }
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y ah;
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};
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template < typename ao > bool x::al< ao >::am(&ap< ao >);
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class ar : x {
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public:
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constexpr ar() : x(as) {}
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static ou as(const x *) { return 0; }
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al< ar > av;
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};
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}
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// Check the exact list of variables to ensure @_ZL2u4 is not among them.
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// DEV: @llvm.compiler.used = {{[^@]*}} @_Z10p_add_funcIiE
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// DEV-SAME: {{^[^@]*}} @_ZL2u3
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// DEV-SAME: {{^[^@]*}} @_ZZ4fun1vE11static_var1
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// DEV-SAME: {{^[^@]*}} @_ZZZN21TestStaticVarInLambda3funEvENKUlPcE_clES0_E4var2
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// DEV-SAME: {{^[^@]*}} @constexpr_var2b
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// DEV-SAME: {{^[^@]*}} @inline_var
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// DEV-SAME: {{^[^@]*}} @u1
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// DEV-SAME: {{^[^@]*}} @u2
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// DEV-SAME: {{^[^@]*}} @u5
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// DEV-SAME: {{^[^@]*$}}
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// HOST-DAG: hipRegisterVar{{.*}}@u1
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// HOST-DAG: hipRegisterVar{{.*}}@u2
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// HOST-DAG: hipRegisterVar{{.*}}@_ZL2u3
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// HOST-DAG: hipRegisterVar{{.*}}@constexpr_var2b
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// HOST-DAG: hipRegisterVar{{.*}}@u5
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// HOST-DAG: hipRegisterVar{{.*}}@inline_var
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// HOST-DAG: hipRegisterVar{{.*}}@_Z10p_add_funcIiE
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZZ4fun1vE11static_var1
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZZ4fun2vE11static_var2
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZZ4fun2vE11static_var3
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZZZN21TestStaticVarInLambda3funEvENKUlPcE_clES0_E4var2
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZZZN21TestStaticVarInLambda3funEvENKUlPcE_clES0_E4var1
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@ext_var
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@_ZL2u4
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@constexpr_var1a
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@constexpr_var1b
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// HOST-NEG-NOT: hipRegisterVar{{.*}}@constexpr_var2a
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