Sema: introduce Type.ptrAlignmentAdvanced

I'm not sure why the other commits in this branch caused this fix to be
necessary. Also, there seems to be more fixes necessary before tests
will pass.

1 files changed, 18 insertions, 7 deletions

diff --git a/src/type.zig b/src/type.zig
index ec7e155d4e..c72cf2be84 100644
--- a/src/type.zig
+++ b/src/type.zig
@@ -2715,8 +2715,12 @@ pub const Type = extern union {
     }
 
     /// Returns 0 if the pointer is naturally aligned and the element type is 0-bit.
-    pub fn ptrAlignment(self: Type, target: Target) u32 {
-        switch (self.tag()) {
+    pub fn ptrAlignment(ty: Type, target: Target) u32 {
+        return ptrAlignmentAdvanced(ty, target, null) catch unreachable;
+    }
+
+    pub fn ptrAlignmentAdvanced(ty: Type, target: Target, sema_kit: ?Module.WipAnalysis) !u32 {
+        switch (ty.tag()) {
             .single_const_pointer,
             .single_mut_pointer,
             .many_const_pointer,
@@ -2728,8 +2732,12 @@ pub const Type = extern union {
             .optional_single_const_pointer,
             .optional_single_mut_pointer,
             => {
-                const child_type = self.cast(Payload.ElemType).?.data;
-                return child_type.abiAlignment(target);
+                const child_type = ty.cast(Payload.ElemType).?.data;
+                if (sema_kit) |sk| {
+                    const res = try child_type.abiAlignmentAdvanced(target, .{ .sema_kit = sk });
+                    return res.scalar;
+                }
+                return (child_type.abiAlignmentAdvanced(target, .eager) catch unreachable).scalar;
             },
 
             .manyptr_u8,
@@ -2740,14 +2748,17 @@ pub const Type = extern union {
             => return 1,
 
             .pointer => {
-                const ptr_info = self.castTag(.pointer).?.data;
+                const ptr_info = ty.castTag(.pointer).?.data;
                 if (ptr_info.@"align" != 0) {
                     return ptr_info.@"align";
+                } else if (sema_kit) |sk| {
+                    const res = try ptr_info.pointee_type.abiAlignmentAdvanced(target, .{ .sema_kit = sk });
+                    return res.scalar;
                 } else {
-                    return ptr_info.pointee_type.abiAlignment(target);
+                    return (ptr_info.pointee_type.abiAlignmentAdvanced(target, .eager) catch unreachable).scalar;
                 }
             },
-            .optional => return self.castTag(.optional).?.data.ptrAlignment(target),
+            .optional => return ty.castTag(.optional).?.data.ptrAlignmentAdvanced(target, sema_kit),
 
             else => unreachable,
         }