text: // RUN: %clang_cc1 -w -fblocks -triple i386-apple-darwin9 -target-cpu yonah -emit-llvm -o - %s | FileCheck %s
  
  // CHECK-LABEL: define{{.*}} signext i8 @f0()
  char f0(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} signext i16 @f1()
  short f1(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} i32 @f2()
  int f2(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} float @f3()
  float f3(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} double @f4()
  double f4(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} x86_fp80 @f5()
  long double f5(void) {
    return 0;
  }
  
  // CHECK-LABEL: define{{.*}} void @f6(i8 noundef signext %a0, i16 noundef signext %a1, i32 noundef %a2, i64 noundef %a3, i8* noundef %a4)
  void f6(char a0, short a1, int a2, long long a3, void *a4) {}
  
  // CHECK-LABEL: define{{.*}} void @f7(i32 noundef %a0)
  typedef enum { A, B, C } e7;
  void f7(e7 a0) {}
  
  // CHECK-LABEL: define{{.*}} i64 @f8_1()
  // CHECK-LABEL: define{{.*}} void @f8_2(i32 %a0.0, i32 %a0.1)
  struct s8 {
    int a;
    int b;
  };
  struct s8 f8_1(void) { while (1) {} }
  void f8_2(struct s8 a0) {}
  
  // This should be passed just as s8.
  
  // CHECK-LABEL: define{{.*}} i64 @f9_1()
  
  // FIXME: llvm-gcc expands this, this may have some value for the
  // backend in terms of optimization but doesn't change the ABI.
  // CHECK-LABEL: define{{.*}} void @f9_2(%struct.s9* noundef byval(%struct.s9) align 4 %a0)
  struct s9 {
    int a : 17;
    int b;
  };
  struct s9 f9_1(void) { while (1) {} }
  void f9_2(struct s9 a0) {}
  
  // Return of small structures and unions
  
  // CHECK: float @f10()
  struct s10 {
    union { };
    float f;
  } f10(void) { while (1) {} }
  
  // Small vectors and 1 x {i64,double} are returned in registers
  
  // CHECK: i32 @f11()
  // CHECK: void @f12(<2 x i32>* noalias sret(<2 x i32>) align 8 %agg.result)
  // CHECK: i64 @f13()
  // CHECK: i64 @f14()
  // CHECK: <2 x i64> @f15()
  // CHECK: <2 x i64> @f16()
  typedef short T11 __attribute__ ((vector_size (4)));
  T11 f11(void) { while (1) {} }
  typedef int T12 __attribute__ ((vector_size (8)));
  T12 f12(void) { while (1) {} }
  typedef long long T13 __attribute__ ((vector_size (8)));
  T13 f13(void) { while (1) {} }
  typedef double T14 __attribute__ ((vector_size (8)));
  T14 f14(void) { while (1) {} }
  typedef long long T15 __attribute__ ((vector_size (16)));
  T15 f15(void) { while (1) {} }
  typedef double T16 __attribute__ ((vector_size (16)));
  T16 f16(void) { while (1) {} }
  
  // And when the single element in a struct (but not for 64 and
  // 128-bits).
  
  // CHECK: i32 @f17()
  // CHECK: void @f18(%{{.*}}* noalias sret(%struct.anon.{{[0-9]+}}) align 8 %agg.result)
  // CHECK: void @f19(%{{.*}}* noalias sret(%struct.anon.{{[0-9]+}}) align 8 %agg.result)
  // CHECK: void @f20(%{{.*}}* noalias sret(%struct.anon.{{[0-9]+}}) align 8 %agg.result)
  // CHECK: void @f21(%{{.*}}* noalias sret(%struct.anon.{{[0-9]+}}) align 16 %agg.result)
  // CHECK: void @f22(%{{.*}}* noalias sret(%struct.anon.{{[0-9]+}}) align 16 %agg.result)
  struct { T11 a; } f17(void) { while (1) {} }
  struct { T12 a; } f18(void) { while (1) {} }
  struct { T13 a; } f19(void) { while (1) {} }
  struct { T14 a; } f20(void) { while (1) {} }
  struct { T15 a; } f21(void) { while (1) {} }
  struct { T16 a; } f22(void) { while (1) {} }
  
  // Single element structures are handled specially
  
  // CHECK: float @f23()
  // CHECK: float @f24()
  // CHECK: float @f25()
  struct { float a; } f23(void) { while (1) {} }
  struct { float a[1]; } f24(void) { while (1) {} }
  struct { struct {} a; struct { float a[1]; } b; } f25(void) { while (1) {} }
  
  // Small structures are handled recursively
  // CHECK: i32 @f26()
  // CHECK: void @f27(%struct.s27* noalias sret(%struct.s27) align 1 %agg.result)
  struct s26 { struct { char a, b; } a; struct { char a, b; } b; } f26(void) { while (1) {} }
  struct s27 { struct { char a, b, c; } a; struct { char a; } b; } f27(void) { while (1) {} }
  
  // CHECK: void @f28(%struct.s28* noalias sret(%struct.s28) align 4 %agg.result)
  struct s28 { int a; int b[]; } f28(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} i16 @f29()
  struct s29 { struct { } a[1]; char b; char c; } f29(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} i16 @f30()
  struct s30 { char a; char b : 4; } f30(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} float @f31()
  struct s31 { char : 0; float b; char : 0; } f31(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} i32 @f32()
  struct s32 { char a; unsigned : 0; } f32(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} float @f33()
  struct s33 { float a; long long : 0; } f33(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} float @f34()
  struct s34 { struct { int : 0; } a; float b; } f34(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} i16 @f35()
  struct s35 { struct { int : 0; } a; char b; char c; } f35(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} i16 @f36()
  struct s36 { struct { int : 0; } a[2][10]; char b; char c; } f36(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} float @f37()
  struct s37 { float c[1][1]; } f37(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} void @f38(%struct.s38* noalias sret(%struct.s38) align 2 %agg.result)
  struct s38 { char a[3]; short b; } f38(void) { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} void @f39(%struct.s39* noundef byval(%struct.s39) align 16 %x)
  typedef int v39 __attribute((vector_size(16)));
  struct s39 { v39 x; };
  void f39(struct s39 x) {}
  
  // <rdar://problem/7247671>
  // CHECK-LABEL: define{{.*}} i32 @f40()
  enum e40 { ec0 = 0 };
  enum e40 f40(void) { }
  
  // CHECK-LABEL: define{{.*}} void ()* @f41()
  typedef void (^vvbp)(void);
  vvbp f41(void) { }
  
  // CHECK-LABEL: define{{.*}} i32 @f42()
  struct s42 { enum e40 f0; } f42(void) {  }
  
  // CHECK-LABEL: define{{.*}} i64 @f43()
  struct s43 { enum e40 f0; int f1; } f43(void) {  }
  
  // CHECK-LABEL: define{{.*}} void ()* @f44()
  struct s44 { vvbp f0; } f44(void) {  }
  
  // CHECK-LABEL: define{{.*}} i64 @f45()
  struct s45 { vvbp f0; int f1; } f45(void) {  }
  
  // CHECK-LABEL: define{{.*}} void @f46(i32 noundef %a0)
  void f46(enum e40 a0) { }
  
  // CHECK-LABEL: define{{.*}} void @f47(void ()* noundef %a1)
  void f47(vvbp a1) { }
  
  // CHECK-LABEL: define{{.*}} void @f48(i32 %a0.0)
  struct s48 { enum e40 f0; };
  void f48(struct s48 a0) { }
  
  // CHECK-LABEL: define{{.*}} void @f49(i32 %a0.0, i32 %a0.1)
  struct s49 { enum e40 f0; int f1; };
  void f49(struct s49 a0) { }
  
  // CHECK-LABEL: define{{.*}} void @f50(void ()* %a0.0)
  struct s50 { vvbp f0; };
  void f50(struct s50 a0) { }
  
  // CHECK-LABEL: define{{.*}} void @f51(void ()* %a0.0, i32 %a0.1)
  struct s51 { vvbp f0; int f1; };
  void f51(struct s51 a0) { }
  
  // CHECK-LABEL: define{{.*}} void @f52(%struct.s52* noundef byval(%struct.s52) align 4 %0)
  struct s52 {
    long double a;
  };
  void f52(struct s52 x) {}
  
  // CHECK-LABEL: define{{.*}} void @f53(%struct.s53* noundef byval(%struct.s53) align 4 %0)
  struct __attribute__((aligned(32))) s53 {
    int x;
    int y;
  };
  void f53(struct s53 x) {}
  
  typedef unsigned short v2i16 __attribute__((__vector_size__(4)));
  
  // CHECK-LABEL: define{{.*}} i32 @f54(i32 noundef %arg.coerce)
  // rdar://8359483
  v2i16 f54(v2i16 arg) { return arg+arg; }
  
  
  typedef int v4i32 __attribute__((__vector_size__(16)));
  
  // CHECK-LABEL: define{{.*}} <2 x i64> @f55(<4 x i32> noundef %arg)
  // PR8029
  v4i32 f55(v4i32 arg) { return arg+arg; }
  
  // CHECK-LABEL: define{{.*}} void @f56(
  // CHECK: i8 noundef signext %a0, %struct.s56_0* noundef byval(%struct.s56_0) align 4 %a1,
  // CHECK: i64 noundef %a2.coerce, %struct.s56_1* noundef byval(%struct.s56_1) align 4 %0,
  // CHECK: i64 noundef %a4.coerce, %struct.s56_2* noundef byval(%struct.s56_2) align 4 %1,
  // CHECK: <4 x i32> noundef %a6, %struct.s56_3* noundef byval(%struct.s56_3) align 16 %a7,
  // CHECK: <2 x double> noundef %a8, %struct.s56_4* noundef byval(%struct.s56_4) align 16 %a9,
  // CHECK: <8 x i32> noundef %a10, %struct.s56_5* noundef byval(%struct.s56_5) align 4 %2,
  // CHECK: <4 x double> noundef %a12, %struct.s56_6* noundef byval(%struct.s56_6) align 4 %3)
  
  // CHECK:   call void (i32, ...) @f56_0(i32 noundef 1,
  // CHECK: i32 noundef %{{[^ ]*}}, %struct.s56_0* noundef byval(%struct.s56_0) align 4 %{{[^ ]*}},
  // CHECK: i64 noundef %{{[^ ]*}}, %struct.s56_1* noundef byval(%struct.s56_1) align 4 %{{[^ ]*}},
  // CHECK: i64 noundef %{{[^ ]*}}, %struct.s56_2* noundef byval(%struct.s56_2) align 4 %{{[^ ]*}},
  // CHECK: <4 x i32> noundef %{{[^ ]*}}, %struct.s56_3* noundef byval(%struct.s56_3) align 16 %{{[^ ]*}},
  // CHECK: <2 x double> noundef %{{[^ ]*}}, %struct.s56_4* noundef byval(%struct.s56_4) align 16 %{{[^ ]*}},
  // CHECK: <8 x i32> noundef {{[^ ]*}}, %struct.s56_5* noundef byval(%struct.s56_5) align 4 %{{[^ ]*}},
  // CHECK: <4 x double> noundef {{[^ ]*}}, %struct.s56_6* noundef byval(%struct.s56_6) align 4 %{{[^ ]*}})
  // CHECK: }
  //
  // <rdar://problem/7964854> [i386] clang misaligns long double in structures
  // when passed byval
  // <rdar://problem/8431367> clang misaligns parameters on stack
  typedef int __attribute__((vector_size (8))) t56_v2i;
  typedef double __attribute__((vector_size (8))) t56_v1d;
  typedef int __attribute__((vector_size (16))) t56_v4i;
  typedef double __attribute__((vector_size (16))) t56_v2d;
  typedef int __attribute__((vector_size (32))) t56_v8i;
  typedef double __attribute__((vector_size (32))) t56_v4d;
  
  struct s56_0 { char a; };
  struct s56_1 { t56_v2i a; };
  struct s56_2 { t56_v1d a; };
  struct s56_3 { t56_v4i a; };
  struct s56_4 { t56_v2d a; };
  struct s56_5 { t56_v8i a; };
  struct s56_6 { t56_v4d a; };
  
  void f56(char a0, struct s56_0 a1,
           t56_v2i a2, struct s56_1 a3,
           t56_v1d a4, struct s56_2 a5,
           t56_v4i a6, struct s56_3 a7,
           t56_v2d a8, struct s56_4 a9,
           t56_v8i a10, struct s56_5 a11,
           t56_v4d a12, struct s56_6 a13) {
    extern void f56_0(int x, ...);
    f56_0(1, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9,
          a10, a11, a12, a13);
  }
  
  // CHECK-LABEL: define{{.*}} void @f57(i32 %x.0, i32 %x.1)
  // CHECK: call void @f57(
  struct s57 { _Complex int x; };
  void f57(struct s57 x) {} void f57a(void) { f57((struct s57){1}); }
  
  // CHECK-LABEL: define{{.*}} void @f58()
  union u58 {};
  void f58(union u58 x) {}
  
  // CHECK-LABEL: define{{.*}} i64 @f59()
  struct s59 { float x __attribute((aligned(8))); };
  struct s59 f59() { while (1) {} }
  
  // CHECK-LABEL: define{{.*}} void @f60(%struct.s60* noundef byval(%struct.s60) align 4 %0, i32 noundef %y)
  struct s60 { int x __attribute((aligned(8))); };
  void f60(struct s60 x, int y) {}
  
  // CHECK-LABEL: define{{.*}} void @f61(i32 noundef %x, %struct.s61* noundef byval(%struct.s61) align 16 %y)
  typedef int T61 __attribute((vector_size(16)));
  struct s61 { T61 x; int y; };
  void f61(int x, struct s61 y) {}
  
  // CHECK-LABEL: define{{.*}} void @f62(i32 noundef %x, %struct.s62* noundef byval(%struct.s62) align 4 %0)
  typedef int T62 __attribute((vector_size(16)));
  struct s62 { T62 x; int y; } __attribute((packed, aligned(8)));
  void f62(int x, struct s62 y) {}
  
  // CHECK-LABEL: define{{.*}} i32 @f63
  // CHECK: ptrtoint
  // CHECK: and {{.*}}, -16
  // CHECK: inttoptr
  typedef int T63 __attribute((vector_size(16)));
  struct s63 { T63 x; int y; };
  int f63(int i, ...) {
    __builtin_va_list ap;
    __builtin_va_start(ap, i);
    struct s63 s = __builtin_va_arg(ap, struct s63);
    __builtin_va_end(ap);
    return s.y;
  }
  
  // CHECK-LABEL: define{{.*}} void @f64(%struct.s64* noundef byval(%struct.s64) align 4 %x)
  struct s64 { signed char a[0]; signed char b[]; };
  void f64(struct s64 x) {}
  
  // CHECK-LABEL: define{{.*}} float @f65()
  struct s65 { signed char a[0]; float b; };
  struct s65 f65() { return (struct s65){{},2}; }
  
  // CHECK-LABEL: define{{.*}} <2 x i64> @f66
  // CHECK: ptrtoint
  // CHECK: and {{.*}}, -16
  // CHECK: inttoptr
  typedef int T66 __attribute((vector_size(16)));
  T66 f66(int i, ...) {
    __builtin_va_list ap;
    __builtin_va_start(ap, i);
    T66 v = __builtin_va_arg(ap, T66);
    __builtin_va_end(ap);
    return v;
  }
  
  // PR14453
  struct s67 { _Complex unsigned short int a; };
  void f67(struct s67 x) {}
  // CHECK-LABEL: define{{.*}} void @f67(%struct.s67* noundef byval(%struct.s67) align 4 %x)
  