clang/test/CodeGen/unique-internal-linkage-names.cpp

   1 // This test checks if internal linkage symbols get unique names with
   2 // -funique-internal-linkage-names option.
   3 // RUN: %clang_cc1 -triple x86_64-linux-gnu -x c++ -emit-llvm -o - < %s | FileCheck %s --check-prefix=PLAIN
   4 // RUN: %clang_cc1 -triple x86_64-linux-gnu -x c++  -emit-llvm -funique-internal-linkage-names -o - < %s | FileCheck %s --check-prefix=UNIQUE
   5
   6 static int glob;
   7 static int foo() {
   8   return 0;
   9 }
  10
  11 int (*bar())() {
  12   return foo;
  13 }
  14
  15 int getGlob() {
  16   return glob;
  17 }
  18
  19 // Function local static variable and anonymous namespace namespace variable.
  20 namespace {
  21 int anon_m;
  22 int getM() {
  23   return anon_m;
  24 }
  25 } // namespace
  26
  27 int retAnonM() {
  28   static int fGlob;
  29   return getM() + fGlob;
  30 }
  31
  32 // Multiversioning symbols
  33 __attribute__((target("default"))) static int mver() {
  34   return 0;
  35 }
  36
  37 __attribute__((target("sse4.2"))) static int mver() {
  38   return 1;
  39 }
  40
  41 int mver_call() {
  42   return mver();
  43 }
  44
  45 namespace {
  46 class A {
  47 public:
  48   A() {}
  49   ~A() {}
  50 };
  51 }
  52
  53 void test() {
  54   A a;
  55 }
  56
  57 // PLAIN: @_ZL4glob = internal global
  58 // PLAIN: @_ZZ8retAnonMvE5fGlob = internal global
  59 // PLAIN: @_ZN12_GLOBAL__N_16anon_mE = internal global
  60 // PLAIN: define internal noundef i32 @_ZL3foov()
  61 // PLAIN: define internal noundef i32 @_ZN12_GLOBAL__N_14getMEv
  62 // PLAIN: define internal ptr @_ZL4mverv.resolver()
  63 // PLAIN: define internal void @_ZN12_GLOBAL__N_11AC1Ev
  64 // PLAIN: define internal void @_ZN12_GLOBAL__N_11AD1Ev
  65 // PLAIN: define internal noundef i32 @_ZL4mverv()
  66 // PLAIN: define internal noundef i32 @_ZL4mverv.sse4.2()
  67 // PLAIN-NOT: "sample-profile-suffix-elision-policy"
  68 // UNIQUE: @_ZL4glob = internal global
  69 // UNIQUE: @_ZZ8retAnonMvE5fGlob = internal global
  70 // UNIQUE: @_ZN12_GLOBAL__N_16anon_mE = internal global
  71 // UNIQUE: define internal noundef i32 @_ZL3foov.[[MODHASH:__uniq.[0-9]+]]() #[[#ATTR:]] {
  72 // UNIQUE: define internal noundef i32 @_ZN12_GLOBAL__N_14getMEv.[[MODHASH]]
  73 // UNIQUE: define internal ptr @_ZL4mverv.[[MODHASH]].resolver()
  74 // UNIQUE: define internal void @_ZN12_GLOBAL__N_11AC1Ev.__uniq.68358509610070717889884130747296293671
  75 // UNIQUE: define internal void @_ZN12_GLOBAL__N_11AD1Ev.__uniq.68358509610070717889884130747296293671
  76 // UNIQUE: define internal noundef i32 @_ZL4mverv.[[MODHASH]]()
  77 // UNIQUE: define internal noundef i32 @_ZL4mverv.[[MODHASH]].sse4.2
  78 // UNIQUE: attributes #[[#ATTR]] = { {{.*}}"sample-profile-suffix-elision-policy"{{.*}} }