1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s 2 3 struct foo { 4 void *a; 5 int b; 6 }; 7 8 // CHECK: @u = global %union.anon zeroinitializer 9 union { int i; float f; } u = { }; 10 11 // CHECK: @u2 = global { i32, [4 x i8] } { i32 0, [4 x i8] undef } 12 union { int i; double f; } u2 = { }; 13 14 // CHECK: @u3 = global %union.anon.1 zeroinitializer 15 union { double f; int i; } u3 = { }; 16 17 // CHECK: @b = global [2 x i32] [i32 0, i32 22] 18 int b[2] = { 19 [1] = 22 20 }; 21 22 // PR6955 23 24 struct ds { 25 struct { 26 struct { 27 short a; 28 }; 29 short b; 30 struct { 31 short c; 32 }; 33 }; 34 }; 35 36 // Traditional C anonymous member init 37 struct ds ds0 = { { { .a = 0 } } }; 38 // C1X lookup-based anonymous member init cases 39 struct ds ds1 = { { .a = 1 } }; 40 struct ds ds2 = { { .b = 1 } }; 41 struct ds ds3 = { .a = 0 }; 42 // CHECK: @ds4 = global %struct.ds { %struct.anon.3 { %struct.anon zeroinitializer, i16 0, %struct.anon.2 { i16 1 } } } 43 struct ds ds4 = { .c = 1 }; 44 struct ds ds5 = { { { .a = 0 } }, .b = 1 }; 45 struct ds ds6 = { { .a = 0, .b = 1 } }; 46 // CHECK: @ds7 = global %struct.ds { %struct.anon.3 { %struct.anon { i16 2 }, i16 3, %struct.anon.2 zeroinitializer } } 47 struct ds ds7 = { 48 { { 49 .a = 1 50 } }, 51 .a = 2, 52 .b = 3 53 }; 54 55 void test1(int argc, char **argv) 56 { 57 // CHECK: internal global %struct.foo { i8* null, i32 1024 } 58 static struct foo foo = { 59 .b = 1024, 60 }; 61 62 // CHECK: bitcast %union.anon.4* %u2 63 // CHECK: call void @llvm.memset 64 union { int i; float f; } u2 = { }; 65 66 // CHECK-NOT: call void @llvm.memset 67 union { int i; float f; } u3; 68 69 // CHECK: ret void 70 } 71 72 73 // PR7151 74 struct S { 75 int nkeys; 76 int *keys; 77 union { 78 void *data; 79 }; 80 }; 81 82 void test2() { 83 struct S *btkr; 84 85 *btkr = (struct S) { 86 .keys = 0, 87 { .data = 0 }, 88 }; 89 } 90
