clang/test/CodeGenCXX/attr-target-clones.cpp

   1 // RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefixes=ITANIUM,LINUX
   2 // RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-macos -emit-llvm %s -o - | FileCheck %s --check-prefixes=ITANIUM,DARWIN
   3 // RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-pc -emit-llvm %s -o - | FileCheck %s --check-prefix=WINDOWS
   4
   5 // DARWIN-NOT: comdat
   6
   7 // Aliases for ifuncs
   8 // ITANIUM: @_Z10overloadedi.ifunc = weak_odr alias i32 (i32), ptr @_Z10overloadedi
   9 // ITANIUM: @_Z10overloadedPKc.ifunc = weak_odr alias i32 (ptr), ptr @_Z10overloadedPKc
  10 // ITANIUM: @_ZN1CIssE3fooEv.ifunc = weak_odr alias i32 (ptr), ptr @_ZN1CIssE3fooEv
  11 // ITANIUM: @_ZN1CIisE3fooEv.ifunc = weak_odr alias i32 (ptr), ptr @_ZN1CIisE3fooEv
  12 // ITANIUM: @_ZN1CIdfE3fooEv.ifunc = weak_odr alias i32 (ptr), ptr @_ZN1CIdfE3fooEv
  13
  14 // Overloaded ifuncs
  15 // ITANIUM: @_Z10overloadedi = weak_odr ifunc i32 (i32), ptr @_Z10overloadedi.resolver
  16 // ITANIUM: @_Z10overloadedPKc = weak_odr ifunc i32 (ptr), ptr @_Z10overloadedPKc.resolver
  17 // struct 'C' ifuncs, note the 'float, U' one doesn't get one.
  18 // ITANIUM: @_ZN1CIssE3fooEv = weak_odr ifunc i32 (ptr), ptr @_ZN1CIssE3fooEv.resolver
  19 // ITANIUM: @_ZN1CIisE3fooEv = weak_odr ifunc i32 (ptr), ptr @_ZN1CIisE3fooEv.resolver
  20 // ITANIUM: @_ZN1CIdfE3fooEv = weak_odr ifunc i32 (ptr), ptr @_ZN1CIdfE3fooEv.resolver
  21
  22 int __attribute__((target_clones("sse4.2", "default"))) overloaded(int) { return 1; }
  23 // ITANIUM: define {{.*}}i32 @_Z10overloadedi.sse4.2.0(i32{{.+}})
  24 // ITANIUM: define {{.*}}i32 @_Z10overloadedi.default.1(i32{{.+}})
  25 // ITANIUM: define weak_odr ptr @_Z10overloadedi.resolver()
  26 // LINUX-SAME: comdat
  27 // ITANIUM: ret ptr @_Z10overloadedi.sse4.2.0
  28 // ITANIUM: ret ptr @_Z10overloadedi.default.1
  29
  30 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHH@Z.sse4.2.0"(i32{{.+}})
  31 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHH@Z.default.1"(i32{{.+}})
  32 // WINDOWS: define weak_odr dso_local i32 @"?overloaded@@YAHH@Z"(i32{{.+}}) comdat
  33 // WINDOWS: call i32 @"?overloaded@@YAHH@Z.sse4.2.0"
  34 // WINDOWS: call i32 @"?overloaded@@YAHH@Z.default.1"
  35
  36 int __attribute__((target_clones("arch=ivybridge", "default"))) overloaded(const char *) { return 2; }
  37 // ITANIUM: define {{.*}}i32 @_Z10overloadedPKc.arch_ivybridge.0(ptr{{.+}})
  38 // ITANIUM: define {{.*}}i32 @_Z10overloadedPKc.default.1(ptr{{.+}})
  39 // ITANIUM: define weak_odr ptr @_Z10overloadedPKc.resolver()
  40 // LINUX-SAME: comdat
  41 // ITANIUM: ret ptr @_Z10overloadedPKc.arch_ivybridge.0
  42 // ITANIUM: ret ptr @_Z10overloadedPKc.default.1
  43
  44 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHPEBD@Z.arch_ivybridge.0"(ptr{{.+}})
  45 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHPEBD@Z.default.1"(ptr{{.+}})
  46 // WINDOWS: define weak_odr dso_local i32 @"?overloaded@@YAHPEBD@Z"(ptr{{.+}}) comdat
  47 // WINDOWS: call i32 @"?overloaded@@YAHPEBD@Z.arch_ivybridge.0"
  48 // WINDOWS: call i32 @"?overloaded@@YAHPEBD@Z.default.1"
  49
  50 void use_overloaded() {
  51   overloaded(1);
  52   // ITANIUM: call noundef i32 @_Z10overloadedi
  53   // WINDOWS: call noundef i32 @"?overloaded@@YAHH@Z"
  54   overloaded(nullptr);
  55   // ITANIUM: call noundef i32 @_Z10overloadedPKc
  56   // WINDOWS: call noundef i32 @"?overloaded@@YAHPEBD@Z"
  57 }
  58
  59 template<typename T, typename U>
  60 struct C {
  61 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 1;}
  62 };
  63 template<typename U>
  64 struct C<int, U> {
  65 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 2;}
  66 };
  67 template<typename U>
  68 struct C<float, U> {
  69 int foo(){ return 2;}
  70 };
  71 template<>
  72 struct C<double, float> {
  73 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 3;}
  74 };
  75
  76 void uses_specialized() {
  77   C<short, short> c;
  78   c.foo();
  79   // ITANIUM: call noundef i32 @_ZN1CIssE3fooEv(ptr
  80   // WINDOWS: call noundef i32 @"?foo@?$C@FF@@QEAAHXZ"(ptr
  81   C<int, short> c2;
  82   c2.foo();
  83   // ITANIUM: call noundef i32 @_ZN1CIisE3fooEv(ptr
  84   // WINDOWS: call noundef i32 @"?foo@?$C@HF@@QEAAHXZ"(ptr
  85   C<float, short> c3;
  86   c3.foo();
  87   // Note this is not an ifunc/mv
  88   // ITANIUM: call noundef i32 @_ZN1CIfsE3fooEv(ptr
  89   // WINDOWS: call noundef i32 @"?foo@?$C@MF@@QEAAHXZ"(ptr
  90   C<double, float> c4;
  91   c4.foo();
  92   // ITANIUM: call noundef i32 @_ZN1CIdfE3fooEv(ptr
  93   // WINDOWS: call noundef i32 @"?foo@?$C@NM@@QEAAHXZ"(ptr
  94 }
  95
  96 // ITANIUM: define weak_odr ptr @_ZN1CIssE3fooEv.resolver()
  97 // LINUX-SAME: comdat
  98 // ITANIUM: ret ptr @_ZN1CIssE3fooEv.sse4.2.0
  99 // ITANIUM: ret ptr @_ZN1CIssE3fooEv.default.1
 100
 101 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ"(ptr
 102 // WINDOWS: call i32 @"?foo@?$C@FF@@QEAAHXZ.sse4.2.0"
 103 // WINDOWS: call i32 @"?foo@?$C@FF@@QEAAHXZ.default.1"
 104
 105 // ITANIUM: define weak_odr ptr @_ZN1CIisE3fooEv.resolver()
 106 // LINUX-SAME: comdat
 107 // ITANIUM: ret ptr @_ZN1CIisE3fooEv.sse4.2.0
 108 // ITANIUM: ret ptr @_ZN1CIisE3fooEv.default.1
 109
 110 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ"(ptr
 111 // WINDOWS: call i32 @"?foo@?$C@HF@@QEAAHXZ.sse4.2.0"
 112 // WINDOWS: call i32 @"?foo@?$C@HF@@QEAAHXZ.default.1"
 113
 114 // ITANIUM: define weak_odr ptr @_ZN1CIdfE3fooEv.resolver()
 115 // LINUX-SAME: comdat
 116 // ITANIUM: ret ptr @_ZN1CIdfE3fooEv.sse4.2.0
 117 // ITANIUM: ret ptr @_ZN1CIdfE3fooEv.default.1
 118
 119 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ"(ptr
 120 // WINDOWS: call i32 @"?foo@?$C@NM@@QEAAHXZ.sse4.2.0"
 121 // WINDOWS: call i32 @"?foo@?$C@NM@@QEAAHXZ.default.1"
 122
 123 // ITANIUM: define {{.*}}i32 @_ZN1CIssE3fooEv.sse4.2.0(ptr
 124 // ITANIUM: define {{.*}}i32 @_ZN1CIssE3fooEv.default.1(ptr
 125 // ITANIUM: define {{.*}}i32 @_ZN1CIisE3fooEv.sse4.2.0(ptr
 126 // ITANIUM: define {{.*}}i32 @_ZN1CIisE3fooEv.default.1(ptr
 127 // ITANIUM: define {{.*}}i32 @_ZN1CIdfE3fooEv.sse4.2.0(ptr
 128 // ITANIUM: define {{.*}}i32 @_ZN1CIdfE3fooEv.default.1(ptr
 129
 130 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ.sse4.2.0"(ptr
 131 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ.default.1"(ptr
 132 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ.sse4.2.0"(ptr
 133 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ.default.1"(ptr
 134 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ.sse4.2.0"(ptr
 135 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ.default.1"(ptr