clang/test/CodeGen/cleanup-stack.c

   1 // RUN: %clang_cc1 -triple i386-unknown-unknown -O3 -emit-llvm %s -o - | FileCheck %s
   2 // CHECK: ret i32 9
   3
   4 struct s0 {
   5   int *var;
   6   int addend;
   7 };
   8
   9 static void f0(struct s0 *p) {
  10   *p->var += p->addend;
  11 }
  12
  13 int f1(void) {
  14   int var = 0;
  15
  16   {
  17     struct s0 x __attribute__((cleanup(f0))) = { &var, 2 };
  18     struct s0 y __attribute__((cleanup(f0))) = { &var, 3 };
  19     {
  20       struct s0 y __attribute__((cleanup(f0))) = { &var, 4 };
  21     }
  22   }
  23
  24   return var;
  25 }