61 lines · cpp
1// This test checks if C++ functions with internal linkage names are mangled2// and the module hash suffixes attached including emitting DW_AT_linkage_name.3//4// RUN: %clang_cc1 -triple x86_64-unknown-linux -debug-info-kind=limited -dwarf-version=4 -emit-llvm -o - %s | FileCheck %s --check-prefix=PLAIN5// RUN: %clang_cc1 -triple x86_64-unknown-linux -debug-info-kind=limited -dwarf-version=4 -funique-internal-linkage-names -emit-llvm -o - %s | FileCheck %s --check-prefix=UNIQUE6// RUN: %clang_cc1 -triple x86_64-unknown-linux -debug-info-kind=limited -dwarf-version=5 -emit-llvm -o - %s | FileCheck %s --check-prefix=PLAIN7// RUN: %clang_cc1 -triple x86_64-unknown-linux -debug-info-kind=limited -dwarf-version=5 -funique-internal-linkage-names -emit-llvm -o - %s | FileCheck %s --check-prefix=UNIQUE8 9static int glob_foo = 5;10static int foo(void) {11 __builtin_printf("%p", &glob_foo);12 return glob_foo;13}14 15// Anonymous namespaces generate internal linkage symbols.16namespace {17 int glob_bar;18 int bar() {19 return glob_bar;20 }21}22 23extern "C" {24 static int glob_zip;25 static int zip(void) {26 return glob_zip;27 }28}29 30void baz() {31 foo();32 bar();33 zip();34}35 36// PLAIN-DAG: @_ZL8glob_foo = internal global i3237// PLAIN-DAG: define internal noundef i32 @_ZL3foov()38// PLAIN-DAG: distinct !DIGlobalVariable(name: "glob_foo", linkageName: "_ZL8glob_foo"{{.*}})39// PLAIN-DAG: distinct !DISubprogram(name: "foo", linkageName: "_ZL3foov"{{.*}})40// PLAIN-DAG: @_ZN12_GLOBAL__N_18glob_barE = internal global i3241// PLAIN-DAG: define internal noundef i32 @_ZN12_GLOBAL__N_13barEv()42// PLAIN-DAG: distinct !DIGlobalVariable(name: "glob_bar", linkageName: "_ZN12_GLOBAL__N_18glob_barE"{{.*}})43// PLAIN-DAG: distinct !DISubprogram(name: "bar", linkageName: "_ZN12_GLOBAL__N_13barEv"{{.*}})44// PLAIN-DAG: @_ZL8glob_zip = internal global i3245// PLAIN-DAG: define internal noundef i32 @_ZL3zipv()46// PLAIN-DAG: distinct !DIGlobalVariable(name: "glob_zip", linkageName: "_ZL8glob_zip"{{.*}})47// PLAIN-DAG: distinct !DISubprogram(name: "zip", linkageName: "_ZL3zipv"{{.*}})48 49// UNIQUE-DAG: @_ZL8glob_foo = internal global i3250// UNIQUE-DAG: define internal noundef i32 @_ZL3foov.[[MODHASH:__uniq\.[0-9]+]]()51// UNIQUE-DAG: distinct !DIGlobalVariable(name: "glob_foo", linkageName: "_ZL8glob_foo"{{.*}})52// UNIQUE-DAG: distinct !DISubprogram(name: "foo", linkageName: "_ZL3foov.[[MODHASH]]"{{.*}})53// UNIQUE-DAG: @_ZN12_GLOBAL__N_18glob_barE = internal global i3254// UNIQUE-DAG: define internal noundef i32 @_ZN12_GLOBAL__N_13barEv.[[MODHASH]]()55// UNIQUE-DAG: distinct !DIGlobalVariable(name: "glob_bar", linkageName: "_ZN12_GLOBAL__N_18glob_barE"{{.*}})56// UNIQUE-DAG: distinct !DISubprogram(name: "bar", linkageName: "_ZN12_GLOBAL__N_13barEv.[[MODHASH]]"{{.*}})57// UNIQUE-DAG: @_ZL8glob_zip = internal global i3258// UNIQUE-DAG: define internal noundef i32 @_ZL3zipv.[[MODHASH]]()59// UNIQUE-DAG: distinct !DIGlobalVariable(name: "glob_zip", linkageName: "_ZL8glob_zip"{{.*}})60// UNIQUE-DAG: distinct !DISubprogram(name: "zip", linkageName: "_ZL3zipv.[[MODHASH]]"{{.*}})61