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