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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 `{{.*}} `.
40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
// RUN: %clang_cc1 -std=c++11 -fcxx-exceptions -fexceptions -fcuda-is-device \
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// RUN: -triple nvptx-nvidia-cuda -emit-llvm -disable-llvm-passes -o - %s | \
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// RUN: FileCheck -check-prefix DEVICE %s
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// RUN: %clang_cc1 -std=c++11 -fcxx-exceptions -fexceptions \
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// RUN: -triple x86_64-unknown-linux-gnu -emit-llvm -disable-llvm-passes -o - %s | \
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// RUN: FileCheck -check-prefix HOST %s
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#include "Inputs/cuda.h"
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__host__ __device__ void f();
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// HOST: define{{.*}} void @_Z7host_fnv() [[HOST_ATTR:#[0-9]+]]
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void host_fn() { f(); }
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// DEVICE: define{{.*}} void @_Z3foov() [[DEVICE_ATTR:#[0-9]+]]
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__device__ void foo() {
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// DEVICE: call void @_Z1fv
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f();
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}
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// DEVICE: define{{.*}} void @_Z12foo_noexceptv() [[DEVICE_ATTR:#[0-9]+]]
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__device__ void foo_noexcept() noexcept {
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// DEVICE: call void @_Z1fv
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f();
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}
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// This is nounwind only on the device side.
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// CHECK: define{{.*}} void @_Z3foov() [[DEVICE_ATTR:#[0-9]+]]
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__host__ __device__ void bar() { f(); }
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// DEVICE: define{{.*}} void @_Z3bazv() [[DEVICE_ATTR:#[0-9]+]]
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__global__ void baz() { f(); }
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// DEVICE: attributes [[DEVICE_ATTR]] = {
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// DEVICE-SAME: nounwind
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// HOST: attributes [[HOST_ATTR]] = {
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// HOST-NOT: nounwind
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// HOST-SAME: }
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