Commit 3f08073f7d2f0cd8aa086f1618a74106bf35086d | zig

author	Matthew Lugg <mlugg@mlugg.co.uk> 2025-12-20 19:01:43+00:00
committer	Matthew Lugg <mlugg@mlugg.co.uk> 2025-12-21 13:07:00+00:00
log	3f08073f7d2f0cd8aa086f1618a74106bf35086d
tree	9346e16f57883ffb87201fd1e8148d79622ec47b
parent	b27bdd5af0976d0b94819d6dda557d0dbb8f0d98
signature	Commit is signed but in an unrecognized format.

I would just fix this in Sema if it were easy to do so, but this is more
like a (minor) AIR data design issue than a straightforward Sema bug.

1 files changed, 8 insertions(+), 6 deletions(-)

src/codegen/x86_64/CodeGen.zig+8-6

...	...	@@ -171444,12 +171444,14 @@ fn genBody(cg: *CodeGen, body: []const Air.Inst.Index) InnerError!void {
171444	171444	const elem_dies = bt.feed();
171445	171445	if (tuple_type.values.get(ip)[field_index] != .none) continue;
171446	171446	const field_type = Type.fromInterned(tuple_type.types.get(ip)[field_index]);
171447		elem_disp = @intCast(field_type.abiAlignment(zcu).forward(elem_disp));
171448		var elem = try cg.tempFromOperand(elem_ref, elem_dies);
171449		try res.write(&elem, .{ .disp = elem_disp }, cg);
171450		try elem.die(cg);
171451		try cg.resetTemps(reset_index);
171452		elem_disp += @intCast(field_type.abiSize(zcu));
	171447	if (!hack_around_sema_opv_bugs or field_type.hasRuntimeBitsIgnoreComptime(zcu)) {
	171448	elem_disp = @intCast(field_type.abiAlignment(zcu).forward(elem_disp));
	171449	var elem = try cg.tempFromOperand(elem_ref, elem_dies);
	171450	try res.write(&elem, .{ .disp = elem_disp }, cg);
	171451	try elem.die(cg);
	171452	try cg.resetTemps(reset_index);
	171453	elem_disp += @intCast(field_type.abiSize(zcu));
	171454	}
171453	171455	}
171454	171456	},
171455	171457	else => return cg.fail("failed to select {s} {f}", .{