Commit 78e982f7c3e8a441259d26a69690d8934dd32bf0 | zig

Closes #17996

2 files changed, 21 insertions(+), 2 deletions(-)

src/codegen/llvm.zig+2-2

...	...	@@ -8722,10 +8722,10 @@ pub const FuncGen = struct {
8722	8722	if (!result_is_ref) {
8723	8723	return self.dg.todo("implement bitcast vector to non-ref array", .{});
8724	8724	}
8725		const array_ptr = try self.buildAllocaWorkaround(inst_ty, .default);
	8725	const alignment = inst_ty.abiAlignment(mod).toLlvm();
	8726	const array_ptr = try self.buildAllocaWorkaround(inst_ty, alignment);
8726	8727	const bitcast_ok = elem_ty.bitSize(mod) == elem_ty.abiSize(mod) * 8;
8727	8728	if (bitcast_ok) {
8728		const alignment = inst_ty.abiAlignment(mod).toLlvm();
8729	8729	_ = try self.wip.store(.normal, operand, array_ptr, alignment);
8730	8730	} else {
8731	8731	// If the ABI size of the element type is not evenly divisible by size in bits;

test/behavior/vector.zig+19

...	...	@@ -1566,3 +1566,22 @@ test "@reduce on bool vector" {
1566	1566	try std.testing.expect(@reduce(.And, a));
1567	1567	try std.testing.expect(@reduce(.And, b));
1568	1568	}
	1569
	1570	test "bitcast vector to array of smaller vectors" {
	1571	if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
	1572	if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
	1573
	1574	const u8x32 = @Vector(32, u8);
	1575	const u8x64 = @Vector(64, u8);
	1576	const S = struct {
	1577	fn doTheTest(input_vec: u8x64) !void {
	1578	try compare(@bitCast(input_vec));
	1579	}
	1580	fn compare(chunks: [2]u8x32) !void {
	1581	try expectEqual(@as(u8x32, @splat(1)), chunks[0]);
	1582	try expectEqual(@as(u8x32, @splat(2)), chunks[1]);
	1583	}
	1584	};
	1585	const input: u8x64 = @bitCast([2]u8x32{ @splat(1), @splat(2) });
	1586	try S.doTheTest(input);
	1587	}