mirror of
https://github.com/c3lang/c3c.git
synced 2026-02-27 20:11:17 +00:00
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
union UnionA
|
|
{
|
|
int a;
|
|
}
|
|
|
|
union UnionB
|
|
{
|
|
struct b
|
|
{
|
|
int a;
|
|
}
|
|
int c;
|
|
double d;
|
|
}
|
|
|
|
fn void test()
|
|
{
|
|
UnionA a = {};
|
|
UnionA a2;
|
|
UnionB b = {};
|
|
UnionB b2;
|
|
UnionB b3 = { .b = {} };
|
|
UnionB b4 = { .b.a = 23, .c = 4, .d = 0.4, .b = {} };
|
|
}
|
|
|
|
// #expect: union_codegen_empty.ll
|
|
|
|
%a = alloca %UnionA, align 4
|
|
%a2 = alloca %UnionA, align 4
|
|
%b = alloca %UnionB, align 8
|
|
%b2 = alloca %UnionB, align 8
|
|
%b3 = alloca %UnionB, align 8
|
|
%b4 = alloca %UnionB, align 8
|
|
%0 = bitcast %UnionA* %a to i32*
|
|
store i32 0, i32* %0, align 4
|
|
%1 = bitcast %UnionA* %a2 to i32*
|
|
store i32 0, i32* %1, align 4
|
|
%2 = bitcast %UnionB* %b to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* align 8 %2, i8 0, i64 8, i1 false)
|
|
%3 = bitcast %UnionB* %b2 to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* align 8 %3, i8 0, i64 8, i1 false)
|
|
%4 = bitcast %UnionB* %b3 to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* align 8 %4, i8 0, i64 8, i1 false)
|
|
%5 = bitcast %UnionB* %b4 to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* align 8 %5, i8 0, i64 8, i1 false)
|
|
ret void
|