fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
32 lines
1.5 KiB
Plaintext
32 lines
1.5 KiB
Plaintext
// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -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 amdgcn-amd-amdhsa -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 amdgcn-amd-amdhsa -fcuda-is-device -fapply-global-visibility-to-externs -fvisibility hidden -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-HIDDEN %s
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#include "Inputs/cuda.h"
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// CHECK-DEFAULT: @c ={{.*}} addrspace(4) externally_initialized global
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// CHECK-DEFAULT: @g ={{.*}} addrspace(1) externally_initialized global
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// CHECK-PROTECTED: @c = protected addrspace(4) externally_initialized global
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// CHECK-PROTECTED: @g = protected addrspace(1) externally_initialized global
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// CHECK-HIDDEN: @c = protected addrspace(4) externally_initialized global
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// CHECK-HIDDEN: @g = protected addrspace(1) externally_initialized global
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__constant__ int c;
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__device__ int g;
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// CHECK-DEFAULT: @e = external addrspace(1) global
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// CHECK-PROTECTED: @e = external protected addrspace(1) global
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// CHECK-HIDDEN: @e = external protected addrspace(1) global
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extern __device__ int e;
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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{{.*}} amdgpu_kernel void @_Z3foov()
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// CHECK-PROTECTED: define protected amdgpu_kernel void @_Z3foov()
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// CHECK-HIDDEN: define protected amdgpu_kernel void @_Z3foov()
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__global__ void foo() {
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g = c;
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}
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