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add alignment field to pointer type

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This commit is contained in:
Andrew Kelley 2017-08-30 02:41:27 -04:00
parent 5482f9f9e8
commit 010b725bde
2 changed files with 9 additions and 0 deletions
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8
src/ir.cpp
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@ -11472,6 +11472,14 @@ static TypeTableEntry *ir_analyze_instruction_field_ptr(IrAnalyze *ira, IrInstru
create_const_type(ira->codegen, child_type->data.pointer.child_type),
ira->codegen->builtin_types.entry_type,
ConstPtrMutComptimeConst, ptr_is_const, ptr_is_volatile);
} else if (buf_eql_str(field_name, "alignment")) {
bool ptr_is_const = true;
bool ptr_is_volatile = false;
return ir_analyze_const_ptr(ira, &field_ptr_instruction->base,
create_const_unsigned_negative(ira->codegen->builtin_types.entry_num_lit_int,
child_type->data.pointer.alignment, false),
ira->codegen->builtin_types.entry_num_lit_int,
ConstPtrMutComptimeConst, ptr_is_const, ptr_is_volatile);
} else {
ir_add_error(ira, &field_ptr_instruction->base,
buf_sprintf("type '%s' has no member called '%s'",

1
test/cases/align.zig
View File

@ -3,6 +3,7 @@ const assert = @import("std").debug.assert;
var foo: u8 align 4 = 100;
test "global variable alignment" {
assert(@typeOf(&foo).alignment == 4);
assert(@typeOf(&foo) == &align 4 u8);
const slice = (&foo)[0..1];
assert(@typeOf(slice) == []align 4 u8);