clang/test/CodeGenCXX/attr-loader-uninitialized.cpp

   1 // RUN: %clang_cc1 -triple=x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
   2
   3 // CHECK: @defn ={{.*}} global i32 undef
   4 int defn  [[clang::loader_uninitialized]];
   5
   6 // CHECK: @_ZL11defn_static = internal global i32 undef
   7 static int defn_static [[clang::loader_uninitialized]] __attribute__((used));
   8
   9 // CHECK: @_ZZ4funcvE4data = internal global i32 undef
  10 int* func(void)
  11 {
  12   static int data [[clang::loader_uninitialized]];
  13   return &data;
  14 }
  15
  16 class trivial
  17 {
  18   float x;
  19 };
  20
  21 // CHECK: @ut ={{.*}} global %class.trivial undef
  22 trivial ut [[clang::loader_uninitialized]];
  23
  24 // CHECK: @arr ={{.*}} global [32 x double] undef
  25 double arr[32] __attribute__((loader_uninitialized));
  26
  27 // Defining as arr2[] [[clang..]] raises the error: attribute cannot be applied to types
  28 // CHECK: @arr2 ={{.*}} global [4 x double] undef
  29 double arr2 [[clang::loader_uninitialized]] [4];
  30
  31 template<typename T> struct templ{T * t;};
  32
  33 // CHECK: @templ_int ={{.*}} global %struct.templ undef
  34 templ<int> templ_int [[clang::loader_uninitialized]];
  35
  36 // CHECK: @templ_trivial ={{.*}} global %struct.templ.0 undef
  37 templ<trivial> templ_trivial [[clang::loader_uninitialized]];
  38
  39 // CHECK: @templ_incomplete ={{.*}} global %struct.templ.1 undef
  40 struct incomplete;
  41 templ<incomplete> templ_incomplete [[clang::loader_uninitialized]];