C backend: TypedefMap is now ArrayHashMap

The C backend depends on insertion order into this map so that type
definitions will be declared before they are used.

1 files changed, 12 insertions, 1 deletions

diff --git a/src/type.zig b/src/type.zig
index 8ded2ee906..52a82c0b93 100644
--- a/src/type.zig
+++ b/src/type.zig
@@ -602,7 +602,7 @@ pub const Type = extern union {
         return hasher.final();
     }
 
-    pub const HashContext = struct {
+    pub const HashContext64 = struct {
         pub fn hash(self: @This(), t: Type) u64 {
             _ = self;
             return t.hash();
@@ -613,6 +613,17 @@ pub const Type = extern union {
         }
     };
 
+    pub const HashContext32 = struct {
+        pub fn hash(self: @This(), t: Type) u32 {
+            _ = self;
+            return @truncate(u32, t.hash());
+        }
+        pub fn eql(self: @This(), a: Type, b: Type) bool {
+            _ = self;
+            return a.eql(b);
+        }
+    };
+
     pub fn copy(self: Type, allocator: *Allocator) error{OutOfMemory}!Type {
         if (self.tag_if_small_enough < Tag.no_payload_count) {
             return Type{ .tag_if_small_enough = self.tag_if_small_enough };