- Add float[<3>] x = { .xy = 1.2, .z = 3.3 } swizzle initialization for vectors. #2599

test/test_suite/vector/vector_init_swizzle.c3

@@ -0,0 +1,8 @@
+fn int test()
+{
+	int[<2>] v = { .xyz = 2 }; // #error: The 'z' component is not present in a vector of length 2, did you assume a longer vector?
+	int[<2>] v2 = { .z = 2 }; // #error: The 'z' component is not present in a vector of length 2, did you assume a longer vector?
+	int[<2>] v3 = { .yx = 2 }; // #error: Designated initializers using swizzling must be a contiguous range, like '.xyz = 123'
+	int[<3>] v4 = { .xyz = 2 };
+	int[<3>] v5 = { .xz = 2 }; // #error: Designated initializers using swizzling must be a contiguous range, like '.xyz = 123'
+}

test/test_suite/vector/vector_init_swizzle_ok.c3t

@@ -0,0 +1,22 @@
+// #target: macos-x64
+module test;
+import std;
+fn int main()
+{
+	int[<2>] v = { .xy = 2 };
+	int[<2>] v2 = { .x = 2, .y = 3 };
+	int[<3>] v3 = { .z = 4, .xy = 1 };
+	return 0;
+}
+
+/* #expect: test.ll
+
+entry:
+  %v = alloca <2 x i32>, align 8
+  %v2 = alloca <2 x i32>, align 8
+  %v3 = alloca <3 x i32>, align 16
+  store <2 x i32>
+  store <2 x i32> <i32 2, i32 3>, ptr %v2, align 8
+  store <4 x i32> <i32 1, i32 1, i32 4, i32 undef>, ptr %v3, align 16
+  ret i32 0
+}