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stage2 ARM: airStructFieldVal for more MCValues

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joachimschmidt557 2022-02-08 13:21:54 +01:00
parent 6b0c950cb8
commit 8fe9d2f986
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GPG Key ID: E0B575BE2884ACC5
2 changed files with 10 additions and 5 deletions
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11
src/arch/arm/CodeGen.zig
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@ -1703,9 +1703,18 @@ fn airStructFieldVal(self: *Self, inst: Air.Inst.Index) !void {
const struct_field_offset = @intCast(u32, struct_ty.structFieldOffset(index, self.target.*));
const struct_field_ty = struct_ty.structFieldType(index);
const struct_field_size = @intCast(u32, struct_field_ty.abiSize(self.target.*));
const adjusted_field_offset = struct_size - struct_field_offset - struct_field_size;
switch (mcv) {
.dead, .unreach => unreachable,
.stack_argument_offset => |off| {
break :result MCValue{ .stack_argument_offset = off + adjusted_field_offset };
},
.stack_offset => |off| {
break :result MCValue{ .stack_offset = off + struct_size - struct_field_offset - struct_field_size };
break :result MCValue{ .stack_offset = off + adjusted_field_offset };
},
.memory => |addr| {
break :result MCValue{ .memory = addr + adjusted_field_offset };
},
else => return self.fail("TODO implement codegen struct_field_val for {}", .{mcv}),
}

4
test/behavior/struct.zig
View File

@ -174,16 +174,12 @@ const MemberFnTestFoo = struct {
};
test "call member function directly" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
const instance = MemberFnTestFoo{ .x = 1234 };
const result = MemberFnTestFoo.member(instance);
try expect(result == 1234);
}
test "store member function in variable" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
const instance = MemberFnTestFoo{ .x = 1234 };
const memberFn = MemberFnTestFoo.member;
const result = memberFn(instance);