clang/test/CodeGenCXX/attr-target-mv-func-ptrs.cpp

   1 // RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefix=LINUX
   2 // RUN: %clang_cc1 -std=c++11 -triple x86_64-windows-pc -emit-llvm %s -o - | FileCheck %s --check-prefix=WINDOWS
   3 void temp();
   4 void temp(int);
   5 using FP = void(*)(int);
   6 void b() {
   7   FP f = temp;
   8 }
   9
  10 int __attribute__((target("sse4.2"))) foo(int) { return 0; }
  11 int __attribute__((target("arch=sandybridge"))) foo(int);
  12 int __attribute__((target("arch=ivybridge"))) foo(int) {return 1;}
  13 int __attribute__((target("default"))) foo(int) { return 2; }
  14
  15 struct S {
  16 int __attribute__((target("sse4.2"))) foo(int) { return 0; }
  17 int __attribute__((target("arch=sandybridge"))) foo(int);
  18 int __attribute__((target("arch=ivybridge"))) foo(int) {return 1;}
  19 int __attribute__((target("default"))) foo(int) { return 2; }
  20 };
  21
  22 using FuncPtr = int (*)(int);
  23 using MemFuncPtr = int (S::*)(int);
  24
  25 void f(FuncPtr, MemFuncPtr);
  26
  27 int bar() {
  28   FuncPtr Free = &foo;
  29   MemFuncPtr Member = &S::foo;
  30   S s;
  31   f(foo, &S::foo);
  32   return Free(1) + (s.*Member)(2);
  33 }
  34
  35 // LINUX: @_Z3fooi.ifunc
  36 // LINUX: @_ZN1S3fooEi.ifunc
  37
  38 // LINUX: define{{.*}} i32 @_Z3barv()
  39 // Store to Free of ifunc
  40 // LINUX: store ptr @_Z3fooi.ifunc
  41 // Store to Member of ifunc
  42 // LINUX: store { i64, i64 } { i64 ptrtoint (ptr @_ZN1S3fooEi.ifunc to i64), i64 0 }, ptr [[MEMBER:%[a-z]+]]
  43
  44 // Call to 'f' with the ifunc
  45 // LINUX: call void @_Z1fPFiiEM1SFiiE(ptr noundef @_Z3fooi.ifunc
  46
  47 // WINDOWS: define dso_local noundef i32 @"?bar@@YAHXZ"()
  48 // Store to Free
  49 // WINDOWS: store ptr @"?foo@@YAHH@Z.resolver", ptr
  50 // Store to Member
  51 // WINDOWS: store ptr @"?foo@S@@QEAAHH@Z.resolver", ptr
  52
  53 // Call to 'f'
  54 // WINDOWS: call void @"?f@@YAXP6AHH@ZP8S@@EAAHH@Z@Z"(ptr noundef @"?foo@@YAHH@Z.resolver", ptr @"?foo@S@@QEAAHH@Z.resolver")