clang/test/CodeGenCXX/copy-assign-volatile-synthesis.cpp

   1 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
   2
   3 typedef unsigned long word_t;
   4 typedef unsigned long u64_t;
   5 typedef unsigned int u32_t;
   6
   7 class ioapic_redir_t {
   8 public:
   9  union {
  10   struct {
  11    word_t vector : 8;
  12
  13    word_t delivery_mode : 3;
  14    word_t dest_mode : 1;
  15
  16    word_t delivery_status : 1;
  17    word_t polarity : 1;
  18    word_t irr : 1;
  19    word_t trigger_mode : 1;
  20
  21    word_t mask : 1;
  22    word_t _pad0 : 15;
  23
  24    word_t dest : 8;
  25   };
  26   volatile u32_t raw[2];
  27   volatile u64_t raw64;
  28  };
  29 };
  30
  31 struct ioapic_shadow_struct
  32 {
  33  ioapic_redir_t redirs[24];
  34 } ioapic_shadow[16];
  35
  36 void init_ioapic(unsigned long ioapic_id)
  37 {
  38      ioapic_redir_t entry;
  39      ioapic_shadow[ioapic_id].redirs[3] = entry;
  40 }
  41
  42 // CHECK: call void @llvm.memcpy