Commit 8f2aa72af7695dc8fba9946b60129a4f615d6727 | zig

author	Jacob Young <jacobly@ziglang.org> 2023-11-08 07:20:18-05:00
committer	Jacob Young <jacobly@ziglang.org> 2023-11-08 07:24:48-05:00
log	8f2aa72af7695dc8fba9946b60129a4f615d6727
tree	4909a6c69e51cda14dec7af74992206acf2177ac
parent	a70d8d29d5895a8b44a86e8f065ee3ee59c9bfe8

1 files changed, 8 insertions(+), 5 deletions(-)

src/arch/x86_64/CodeGen.zig+8-5

 @@ -4877,11 +4877,14 @@ fn airWrapOptional(self: *Self, inst: Air.Inst.Index) !void {
             switch (opt_mcv) {
                 else => unreachable,
-                .register => |opt_reg| try self.asmRegisterImmediate(
+                .register => |opt_reg| {
-                    .{ ._s, .bt },
+                    try self.truncateRegister(pl_ty, opt_reg);
-                    opt_reg,
+                    try self.asmRegisterImmediate(
-                    Immediate.u(@as(u6, @intCast(pl_abi_size * 8))),
+                        .{ ._s, .bt },
-                ),
+                        opt_reg,
+                        Immediate.u(@as(u6, @intCast(pl_abi_size * 8))),
+                    );
+                },
                 .load_frame => |frame_addr| try self.asmMemoryImmediate(
                     .{ ._, .mov },