From 77734ea967d620541eadc770280477cf1550892e Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Sat, 27 Jul 2019 11:59:50 +0100
Subject: Improve the performance of simple array comparisons

---
 src/types.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'src/types.cpp')

diff --git a/src/types.cpp b/src/types.cpp
index dc7ecb946..5cf86d6b6 100644
--- a/src/types.cpp
+++ b/src/types.cpp
@@ -1037,6 +1037,29 @@ Type *core_array_type(Type *t) {
 	return t;
 }
 
+// NOTE(bill): type can be easily compared using memcmp
+bool is_type_simple_compare(Type *t) {
+	t = core_type(t);
+	switch (t->kind) {
+	case Type_Array:
+		return is_type_simple_compare(t->Array.elem);
+
+	case Type_Basic:
+		if (t->Basic.flags & (BasicFlag_Integer|BasicFlag_Float|BasicFlag_Complex|BasicFlag_Rune|BasicFlag_Pointer)) {
+			return true;
+		}
+		return false;
+
+	case Type_Pointer:
+	case Type_Proc:
+	case Type_BitSet:
+	case Type_BitField:
+		return true;
+	}
+
+	return false;
+}
+
 Type *base_complex_elem_type(Type *t) {
 	t = core_type(t);
 	if (is_type_complex(t)) {
-- 
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