test/CodeGen/functions.c

   1 // RUN: %clang_cc1 %s -emit-llvm -o - -verify | FileCheck %s
   2
   3 int g();
   4
   5 int foo(int i) {
   6   return g(i);
   7 }
   8
   9 int g(int i) {
  10   return g(i);
  11 }
  12
  13 // rdar://6110827
  14 typedef void T(void);
  15 void test3(T f) {
  16   f();
  17 }
  18
  19 int a(int);
  20 int a() {return 1;}
  21
  22 void f0() {}
  23 // CHECK: define void @f0()
  24
  25 void f1();
  26 void f2(void) {
  27 // CHECK: call void @f1()
  28   f1(1, 2, 3);
  29 }
  30 // CHECK: define void @f1()
  31 void f1() {}
  32
  33 // CHECK: define {{.*}} @f3{{\(\)|\(.*sret.*\)}}
  34 struct foo { int X, Y, Z; } f3() {
  35   while (1) {}
  36 }
  37
  38 // PR4423 - This shouldn't crash in codegen
  39 void f4() {}
  40 void f5() { f4(42); } //expected-warning {{too many arguments}}
  41
  42 // Qualifiers on parameter types shouldn't make a difference.
  43 static void f6(const float f, const float g) {
  44 }
  45 void f7(float f, float g) {
  46   f6(f, g);
  47 // CHECK: define void @f7(float{{.*}}, float{{.*}})
  48 // CHECK: call void @f6(float{{.*}}, float{{.*}})
  49 }
  50
  51 // PR6911 - incomplete function types
  52 struct Incomplete;
  53 void f8_callback(struct Incomplete);
  54 void f8_user(void (*callback)(struct Incomplete));
  55 void f8_test() {
  56   f8_user(&f8_callback);
  57 // CHECK: define void @f8_test()
  58 // CHECK: call void @f8_user({{.*}}* bitcast (void ()* @f8_callback to {{.*}}*))
  59 // CHECK: declare void @f8_user({{.*}}*)
  60 // CHECK: declare void @f8_callback()
  61 }