result loc semantics for array initialization

```zig
export fn entry() void {
    var x = [3]Bar{ bar(), bar(), Bar{ .y = 12 } };
}
```

```llvm
define void @entry() #2 !dbg !35 {
Entry:
  %x = alloca [3 x %Bar], align 4
  %0 = getelementptr inbounds [3 x %Bar], [3 x %Bar]* %x, i64 0, i64 0, !dbg !48
  call fastcc void @bar(%Bar* sret %0), !dbg !48
  %1 = getelementptr inbounds [3 x %Bar], [3 x %Bar]* %x, i64 0, i64 1, !dbg !49
  call fastcc void @bar(%Bar* sret %1), !dbg !49
  %2 = getelementptr inbounds [3 x %Bar], [3 x %Bar]* %x, i64 0, i64 2, !dbg !50
  %3 = bitcast %Bar* %2 to i8*, !dbg !50
  call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %3, i8* align 4 bitcast (%Bar* @0 to i8*), i64 4, i1 false), !dbg !50
  call void @llvm.dbg.declare(metadata [3 x %Bar]* %x, metadata !39, metadata !DIExpression()), !dbg !51
  ret void, !dbg !52
}
```
59fe13772fAndrew Kelley committed on 6/9/2019, 4:03:15 PMparent3ec766a
2 files changedLine totals unavailable