120 lines
3 KiB
C
120 lines
3 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-nacl -emit-llvm -o - %s| FileCheck %s
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#include <stdarg.h>
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// Test for x86-64 structure representation (instead of pnacl representation),
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// in particular for unions. Also crib a few tests from x86 Linux.
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union PP_VarValue {
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int as_int;
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double as_double;
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long long as_i64;
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};
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struct PP_Var {
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int type;
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int padding;
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union PP_VarValue value;
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};
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// CHECK: define { i64, i64 } @f0()
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struct PP_Var f0() {
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struct PP_Var result = { 0, 0, 0 };
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return result;
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}
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// CHECK-LABEL: define void @f1(i64 %p1.coerce0, i64 %p1.coerce1)
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void f1(struct PP_Var p1) { while(1) {} }
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// long doubles are 64 bits on NaCl
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// CHECK-LABEL: define double @f5()
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long double f5(void) {
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return 0;
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}
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// CHECK-LABEL: define void @f6(i8 signext %a0, i16 signext %a1, i32 %a2, i64 %a3, i8* %a4)
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void f6(char a0, short a1, int a2, long long a3, void *a4) {
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}
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// CHECK-LABEL: define i64 @f8_1()
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// CHECK-LABEL: define void @f8_2(i64 %a0.coerce)
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union u8 {
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long double a;
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int b;
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};
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union u8 f8_1() { while (1) {} }
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void f8_2(union u8 a0) {}
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// CHECK-LABEL: define i64 @f9()
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struct s9 { int a; int b; int : 0; } f9(void) { while (1) {} }
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// CHECK-LABEL: define void @f10(i64 %a0.coerce)
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struct s10 { int a; int b; int : 0; };
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void f10(struct s10 a0) {}
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// CHECK-LABEL: define double @f11()
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union { long double a; float b; } f11() { while (1) {} }
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// CHECK-LABEL: define i32 @f12_0()
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// CHECK-LABEL: define void @f12_1(i32 %a0.coerce)
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struct s12 { int a __attribute__((aligned(16))); };
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struct s12 f12_0(void) { while (1) {} }
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void f12_1(struct s12 a0) {}
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// Check that sret parameter is accounted for when checking available integer
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// registers.
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// CHECK: define void @f13(%struct.s13_0* noalias sret %agg.result, i32 %a, i32 %b, i32 %c, i32 %d, {{.*}}* byval align 8 %e, i32 %f)
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struct s13_0 { long long f0[3]; };
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struct s13_1 { long long f0[2]; };
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struct s13_0 f13(int a, int b, int c, int d,
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struct s13_1 e, int f) { while (1) {} }
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// CHECK-LABEL: define void @f20(%struct.s20* byval align 32 %x)
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struct __attribute__((aligned(32))) s20 {
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int x;
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int y;
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};
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void f20(struct s20 x) {}
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// CHECK: declare void @func(i64)
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typedef struct _str {
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union {
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long double a;
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long c;
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};
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} str;
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void func(str s);
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str ss;
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void f9122143()
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{
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func(ss);
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}
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typedef struct {
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int a;
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int b;
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} s1;
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// CHECK-LABEL: define i32 @f48(%struct.s1* byval %s)
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int __attribute__((pnaclcall)) f48(s1 s) { return s.a; }
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// CHECK-LABEL: define void @f49(%struct.s1* noalias sret %agg.result)
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s1 __attribute__((pnaclcall)) f49() { s1 s; s.a = s.b = 1; return s; }
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union simple_union {
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int a;
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char b;
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};
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// Unions should be passed as byval structs
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// CHECK-LABEL: define void @f50(%union.simple_union* byval %s)
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void __attribute__((pnaclcall)) f50(union simple_union s) {}
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typedef struct {
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int b4 : 4;
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int b3 : 3;
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int b8 : 8;
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} bitfield1;
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// Bitfields should be passed as byval structs
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// CHECK-LABEL: define void @f51(%struct.bitfield1* byval %bf1)
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void __attribute__((pnaclcall)) f51(bitfield1 bf1) {}
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