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6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
// RUN: %clang_cc1 %s -emit-llvm -triple x86_64-apple-macosx10.13.0 -o - | FileCheck %s --check-prefixes=CHECK,NO_EXCEPTIONS
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// RUN: %clang_cc1 -fexceptions %s -emit-llvm -triple x86_64-apple-macosx10.13.0 -o - | FileCheck %s --check-prefixes=CHECK,EXCEPTIONS
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struct NonTrivial {
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~NonTrivial();
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};
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// CHECK-NOT: __cxa_atexit{{.*}}_ZN10NonTrivialD1Ev
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[[clang::no_destroy]] NonTrivial nt1;
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// CHECK-NOT: _tlv_atexit{{.*}}_ZN10NonTrivialD1Ev
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[[clang::no_destroy]] thread_local NonTrivial nt2;
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struct NonTrivial2 {
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~NonTrivial2();
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};
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// CHECK: __cxa_atexit{{.*}}_ZN11NonTrivial2D1Ev{{.*}}nt21
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NonTrivial2 nt21;
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// CHECK: _tlv_atexit{{.*}}_ZN11NonTrivial2D1Ev{{.*}}nt22
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thread_local NonTrivial2 nt22;
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// CHECK-LABEL: define{{.*}} void @_Z1fv
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void f() {
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// CHECK: __cxa_atexit{{.*}}_ZN11NonTrivial2D1Ev
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static NonTrivial2 nt21;
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// CHECK: _tlv_atexit{{.*}}_ZN11NonTrivial2D1Ev
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thread_local NonTrivial2 nt22;
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}
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// CHECK-LABEL: define{{.*}} void @_Z1gv
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void g() {
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// CHECK-NOT: __cxa_atexit
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[[clang::no_destroy]] static NonTrivial2 nt21;
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// CHECK-NOT: _tlv_atexit
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[[clang::no_destroy]] thread_local NonTrivial2 nt22;
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}
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// CHECK-LABEL: define internal void @__cxx_global_var_init
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// CHECK: __cxa_atexit{{.*}}_ZN10NonTrivialD1Ev
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[[clang::always_destroy]] NonTrivial nt3;
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// CHECK-LABEL: define internal void @__cxx_global_var_init
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// CHECK: _tlv_atexit{{.*}}_ZN10NonTrivialD1Ev
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[[clang::always_destroy]] thread_local NonTrivial nt4;
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struct NonTrivial3 {
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NonTrivial3();
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~NonTrivial3();
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};
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[[clang::no_destroy]] NonTrivial3 arr[10];
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// CHECK-LABEL: define internal void @__cxx_global_var_init
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// CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
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// EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
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// NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
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// CHECK-NOT: call i32 @__cxa_atexit
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void h() {
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[[clang::no_destroy]] static NonTrivial3 slarr[10];
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}
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// CHECK-LABEL: define{{.*}} void @_Z1hv
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// CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
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// EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
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// NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
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// CHECK-NOT: call i32 @__cxa_atexit
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void i() {
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[[clang::no_destroy]] thread_local NonTrivial3 tlarr[10];
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}
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// CHECK-LABEL: define{{.*}} void @_Z1iv
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// CHECK: {{invoke|call}} void @_ZN11NonTrivial3C1Ev
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// EXCEPTIONS: call void @_ZN11NonTrivial3D1Ev
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// NO_EXCEPTIONS-NOT: call void @_ZN11NonTrivial3D1Ev
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// CHECK-NOT: _tlv_atexit
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