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 `{{.*}} `.
25 lines
827 B
C++
25 lines
827 B
C++
// RUN: %clang_cc1 -triple x86_64-windows-gnu -fdeclspec -emit-llvm -o - %s | FileCheck %s -DDSO_ATTRS="dso_local dllexport"
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// RUN: %clang_cc1 -triple x86_64-windows-itanium -fdeclspec -emit-llvm -o - %s | FileCheck %s -DDSO_ATTRS="dso_local dllexport"
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// RUN: %clang_cc1 -triple x86_64-scei-ps4 -fdeclspec -emit-llvm -o - %s | FileCheck %s -DDSO_ATTRS=dllexport
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struct __declspec(dllexport) A {
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virtual void m();
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};
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struct __declspec(dllexport) B {
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virtual void m();
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};
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struct __declspec(dllexport) C : A, B {
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virtual void m();
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};
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void C::m() {}
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// CHECK: define{{.*}} [[DSO_ATTRS]] void @_ZThn8_N1C1mEv
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struct Base {
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virtual void m();
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};
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struct __declspec(dllexport) Derived : virtual Base {
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virtual void m();
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};
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void Derived::m() {}
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// CHECK: define{{.*}} [[DSO_ATTRS]] void @_ZTv0_n24_N7Derived1mEv
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