mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-09 18:36:05 +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 `{{.*}} `.
30 lines
751 B
C++
30 lines
751 B
C++
// RUN: %clang_cc1 -std=c++11 %s -emit-llvm -o - -triple i686-linux-gnu | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ITANIUM
|
|
// RUN: %clang_cc1 -std=c++11 %s -emit-llvm -o - -triple i686-windows | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-MS
|
|
|
|
extern "C" {
|
|
int f();
|
|
int g();
|
|
}
|
|
|
|
struct A {
|
|
A(int, int);
|
|
};
|
|
|
|
|
|
void foo() {
|
|
A a{f(), g()};
|
|
}
|
|
// CHECK-ITANIUM-LABEL: define{{.*}} void @_Z3foov
|
|
// CHECK-MS-LABEL: define dso_local void @"?foo@@YAXXZ"
|
|
// CHECK: call i32 @f()
|
|
// CHECK: call i32 @g()
|
|
|
|
struct B : A {
|
|
B();
|
|
};
|
|
B::B() : A{f(), g()} {}
|
|
// CHECK-ITANIUM-LABEL: define{{.*}} void @_ZN1BC2Ev
|
|
// CHECK-MS-LABEL: define dso_local x86_thiscallcc %struct.B* @"??0B@@QAE@XZ"
|
|
// CHECK: call i32 @f()
|
|
// CHECK: call i32 @g()
|