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

   1 // RUN: %clang_cc1 -no-opaque-pointers -std=c++11 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix=LINUX
   2 // RUN: %clang_cc1 -no-opaque-pointers -std=c++11 -triple x86_64-windows-pc -emit-llvm %s -o - | FileCheck %s --check-prefix=WINDOWS
   3
   4 // Overloaded ifuncs
   5 // LINUX: @_Z10overloadedi.ifunc = weak_odr ifunc i32 (i32), i32 (i32)* ()* @_Z10overloadedi.resolver
   6 // LINUX: @_Z10overloadedPKc.ifunc = weak_odr ifunc i32 (i8*), i32 (i8*)* ()* @_Z10overloadedPKc.resolver
   7 // struct 'C' ifuncs, note the 'float, U' one doesn't get one.
   8 // LINUX: @_ZN1CIssE3fooEv.ifunc = weak_odr ifunc i32 (%struct.C*), i32 (%struct.C*)* ()* @_ZN1CIssE3fooEv.resolver
   9 // LINUX: @_ZN1CIisE3fooEv.ifunc = weak_odr ifunc i32 (%struct.C.0*), i32 (%struct.C.0*)* ()* @_ZN1CIisE3fooEv.resolver
  10 // LINUX: @_ZN1CIdfE3fooEv.ifunc = weak_odr ifunc i32 (%struct.C.2*), i32 (%struct.C.2*)* ()* @_ZN1CIdfE3fooEv.resolver
  11
  12 int __attribute__((target_clones("sse4.2", "default"))) overloaded(int) { return 1; }
  13 // LINUX: define {{.*}}i32 @_Z10overloadedi.sse4.2.0(i32{{.+}})
  14 // LINUX: define {{.*}}i32 @_Z10overloadedi.default.1(i32{{.+}})
  15 // LINUX: define weak_odr i32 (i32)* @_Z10overloadedi.resolver() comdat
  16 // LINUX: ret i32 (i32)* @_Z10overloadedi.sse4.2.0
  17 // LINUX: ret i32 (i32)* @_Z10overloadedi.default.1
  18
  19 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHH@Z.sse4.2.0"(i32{{.+}})
  20 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHH@Z.default.1"(i32{{.+}})
  21 // WINDOWS: define weak_odr dso_local i32 @"?overloaded@@YAHH@Z"(i32{{.+}}) comdat
  22 // WINDOWS: call i32 @"?overloaded@@YAHH@Z.sse4.2.0"
  23 // WINDOWS: call i32 @"?overloaded@@YAHH@Z.default.1"
  24
  25 int __attribute__((target_clones("arch=ivybridge", "default"))) overloaded(const char *) { return 2; }
  26 // LINUX: define {{.*}}i32 @_Z10overloadedPKc.arch_ivybridge.0(i8*{{.+}})
  27 // LINUX: define {{.*}}i32 @_Z10overloadedPKc.default.1(i8*{{.+}})
  28 // LINUX: define weak_odr i32 (i8*)* @_Z10overloadedPKc.resolver() comdat
  29 // LINUX: ret i32 (i8*)* @_Z10overloadedPKc.arch_ivybridge.0
  30 // LINUX: ret i32 (i8*)* @_Z10overloadedPKc.default.1
  31
  32 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHPEBD@Z.arch_ivybridge.0"(i8*{{.+}})
  33 // WINDOWS: define dso_local noundef i32 @"?overloaded@@YAHPEBD@Z.default.1"(i8*{{.+}})
  34 // WINDOWS: define weak_odr dso_local i32 @"?overloaded@@YAHPEBD@Z"(i8*{{.+}}) comdat
  35 // WINDOWS: call i32 @"?overloaded@@YAHPEBD@Z.arch_ivybridge.0"
  36 // WINDOWS: call i32 @"?overloaded@@YAHPEBD@Z.default.1"
  37
  38 void use_overloaded() {
  39   overloaded(1);
  40   // LINUX: call noundef i32 @_Z10overloadedi.ifunc
  41   // WINDOWS: call noundef i32 @"?overloaded@@YAHH@Z"
  42   overloaded(nullptr);
  43   // LINUX: call noundef i32 @_Z10overloadedPKc.ifunc
  44   // WINDOWS: call noundef i32 @"?overloaded@@YAHPEBD@Z"
  45 }
  46
  47 template<typename T, typename U>
  48 struct C {
  49 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 1;}
  50 };
  51 template<typename U>
  52 struct C<int, U> {
  53 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 2;}
  54 };
  55 template<typename U>
  56 struct C<float, U> {
  57 int foo(){ return 2;}
  58 };
  59 template<>
  60 struct C<double, float> {
  61 int __attribute__((target_clones("sse4.2", "default"))) foo(){ return 3;}
  62 };
  63
  64 void uses_specialized() {
  65   C<short, short> c;
  66   c.foo();
  67   // LINUX: call noundef i32 @_ZN1CIssE3fooEv.ifunc(%struct.C
  68   // WINDOWS: call noundef i32 @"?foo@?$C@FF@@QEAAHXZ"(%struct.C
  69   C<int, short> c2;
  70   c2.foo();
  71   // LINUX: call noundef i32 @_ZN1CIisE3fooEv.ifunc(%struct.C
  72   // WINDOWS: call noundef i32 @"?foo@?$C@HF@@QEAAHXZ"(%struct.C
  73   C<float, short> c3;
  74   c3.foo();
  75   // Note this is not an ifunc/mv
  76   // LINUX: call noundef i32 @_ZN1CIfsE3fooEv(%struct.C
  77   // WINDOWS: call noundef i32 @"?foo@?$C@MF@@QEAAHXZ"(%struct.C
  78   C<double, float> c4;
  79   c4.foo();
  80   // LINUX: call noundef i32 @_ZN1CIdfE3fooEv.ifunc(%struct.C
  81   // WINDOWS: call noundef i32 @"?foo@?$C@NM@@QEAAHXZ"(%struct.C
  82 }
  83
  84 // LINUX: define weak_odr i32 (%struct.C*)* @_ZN1CIssE3fooEv.resolver() comdat
  85 // LINUX: ret i32 (%struct.C*)* @_ZN1CIssE3fooEv.sse4.2.0
  86 // LINUX: ret i32 (%struct.C*)* @_ZN1CIssE3fooEv.default.1
  87
  88 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ"(%struct.C{{.+}})
  89 // WINDOWS: call i32 @"?foo@?$C@FF@@QEAAHXZ.sse4.2.0"
  90 // WINDOWS: call i32 @"?foo@?$C@FF@@QEAAHXZ.default.1"
  91
  92 // LINUX: define weak_odr i32 (%struct.C{{.+}})* @_ZN1CIisE3fooEv.resolver() comdat
  93 // LINUX: ret i32 (%struct.C{{.+}})* @_ZN1CIisE3fooEv.sse4.2.0
  94 // LINUX: ret i32 (%struct.C{{.+}})* @_ZN1CIisE3fooEv.default.1
  95
  96 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ"(%struct.C{{.+}})
  97 // WINDOWS: call i32 @"?foo@?$C@HF@@QEAAHXZ.sse4.2.0"
  98 // WINDOWS: call i32 @"?foo@?$C@HF@@QEAAHXZ.default.1"
  99
 100 // LINUX: define weak_odr i32 (%struct.C{{.+}})* @_ZN1CIdfE3fooEv.resolver() comdat
 101 // LINUX: ret i32 (%struct.C{{.+}})* @_ZN1CIdfE3fooEv.sse4.2.0
 102 // LINUX: ret i32 (%struct.C{{.+}})* @_ZN1CIdfE3fooEv.default.1
 103
 104 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ"(%struct.C{{.+}})
 105 // WINDOWS: call i32 @"?foo@?$C@NM@@QEAAHXZ.sse4.2.0"
 106 // WINDOWS: call i32 @"?foo@?$C@NM@@QEAAHXZ.default.1"
 107
 108 // LINUX: define {{.*}}i32 @_ZN1CIssE3fooEv.sse4.2.0(%struct.C{{.+}})
 109 // LINUX: define {{.*}}i32 @_ZN1CIssE3fooEv.default.1(%struct.C{{.+}})
 110 // LINUX: define {{.*}}i32 @_ZN1CIisE3fooEv.sse4.2.0(%struct.C{{.+}})
 111 // LINUX: define {{.*}}i32 @_ZN1CIisE3fooEv.default.1(%struct.C{{.+}})
 112 // LINUX: define {{.*}}i32 @_ZN1CIdfE3fooEv.sse4.2.0(%struct.C{{.+}})
 113 // LINUX: define {{.*}}i32 @_ZN1CIdfE3fooEv.default.1(%struct.C{{.+}})
 114
 115 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ.sse4.2.0"(%struct.C{{.+}})
 116 // WINDOWS: define {{.*}}i32 @"?foo@?$C@FF@@QEAAHXZ.default.1"(%struct.C{{.+}})
 117 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ.sse4.2.0"(%struct.C{{.+}})
 118 // WINDOWS: define {{.*}}i32 @"?foo@?$C@HF@@QEAAHXZ.default.1"(%struct.C{{.+}})
 119 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ.sse4.2.0"(%struct.C{{.+}})
 120 // WINDOWS: define {{.*}}i32 @"?foo@?$C@NM@@QEAAHXZ.default.1"(%struct.C{{.+}})