mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-09 11:56:06 +00:00
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 `{{.*}} `.
18 lines
867 B
C++
18 lines
867 B
C++
// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck --check-prefix=LINUX %s
|
|
// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-apple-darwin12 | FileCheck --check-prefix=DARWIN %s
|
|
|
|
// Regression test for PR40327
|
|
|
|
// LINUX: @default_tls ={{.*}} thread_local global i32
|
|
// LINUX: @hidden_tls = hidden thread_local global i32
|
|
// LINUX: define weak_odr hidden i32* @_ZTW11default_tls()
|
|
// LINUX: define weak_odr hidden i32* @_ZTW10hidden_tls()
|
|
//
|
|
// DARWIN: @default_tls = internal thread_local global i32
|
|
// DARWIN: @hidden_tls = internal thread_local global i32
|
|
// DARWIN: define cxx_fast_tlscc i32* @_ZTW11default_tls()
|
|
// DARWIN: define hidden cxx_fast_tlscc i32* @_ZTW10hidden_tls()
|
|
|
|
__attribute__((visibility("default"))) thread_local int default_tls;
|
|
__attribute__((visibility("hidden"))) thread_local int hidden_tls;
|