82d0173f72
Add the visibility override in setGlobalVisibility(), following the
existing OpenMP precedent. Unlike the AMDGPU post-hoc override, this
check respects explicit [[gnu::visibility("hidden")]] attributes
via isVisibilityExplicit().
51 lines
2.6 KiB
C++
51 lines
2.6 KiB
C++
// RUN: %clang_cc1 -triple spirv64-amd-amdhsa -x hip -fcuda-is-device -fapply-global-visibility-to-externs -fvisibility=default -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-DEFAULT %s
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// RUN: %clang_cc1 -triple spirv64-amd-amdhsa -x hip -fcuda-is-device -fapply-global-visibility-to-externs -fvisibility=protected -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-PROTECTED %s
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// RUN: %clang_cc1 -triple spirv64-amd-amdhsa -x hip -fcuda-is-device -fapply-global-visibility-to-externs -fvisibility=hidden -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-HIDDEN %s
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// Mirrors clang/test/CodeGenCUDA/amdgpu-visibility.cu for the SPIR-V AMDGCN
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// target. Verifies that device kernels and variables with hidden visibility get
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// upgraded to protected, matching native AMDGPU behavior.
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#define __device__ __attribute__((device))
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#define __constant__ __attribute__((constant))
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#define __global__ __attribute__((global))
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// CHECK-DEFAULT-DAG: @c ={{.*}} addrspace(1) externally_initialized constant
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// CHECK-DEFAULT-DAG: @g ={{.*}} addrspace(1) externally_initialized global
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// CHECK-DEFAULT-DAG: @e = external addrspace(1) global
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// CHECK-PROTECTED-DAG: @c = protected addrspace(1) externally_initialized constant
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// CHECK-PROTECTED-DAG: @g = protected addrspace(1) externally_initialized global
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// CHECK-PROTECTED-DAG: @e = external protected addrspace(1) global
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// CHECK-HIDDEN-DAG: @c = protected addrspace(1) externally_initialized constant
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// CHECK-HIDDEN-DAG: @g = protected addrspace(1) externally_initialized global
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// CHECK-HIDDEN-DAG: @e = external protected addrspace(1) global
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__constant__ int c;
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__device__ int g;
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extern __device__ int e;
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// Explicit [[gnu::visibility("hidden")]] must be respected (not upgraded to
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// protected), unlike the implicit -fvisibility=hidden flag.
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// CHECK-DEFAULT-DAG: @h = hidden addrspace(1) externally_initialized global
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// CHECK-PROTECTED-DAG: @h = hidden addrspace(1) externally_initialized global
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// CHECK-HIDDEN-DAG: @h = hidden addrspace(1) externally_initialized global
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__attribute__((visibility("hidden"))) __device__ int h;
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// dummy one to hold reference to `e`.
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__device__ int f() {
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return e;
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}
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// CHECK-DEFAULT: define{{.*}} spir_kernel void @_Z3foov()
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// CHECK-PROTECTED: define protected spir_kernel void @_Z3foov()
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// CHECK-HIDDEN: define protected spir_kernel void @_Z3foov()
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__global__ void foo() {
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g = c;
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}
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// CHECK-DEFAULT: define hidden spir_kernel void @_Z3barv()
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// CHECK-PROTECTED: define hidden spir_kernel void @_Z3barv()
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// CHECK-HIDDEN: define hidden spir_kernel void @_Z3barv()
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__attribute__((visibility("hidden"))) __global__ void bar() {
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h = 1;
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}
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