1 // RUN: %clang_cc1 -fsyntax-only %s -verify -Wvector-conversion
2 
3 typedef long long t1 __attribute__ ((vector_size (8)));
4 typedef char t2 __attribute__ ((vector_size (16)));
5 typedef float t3 __attribute__ ((vector_size (16)));
6 typedef short s2 __attribute__ ((vector_size(4)));
7 
8 typedef enum { Evalue = 0x10000 } E;
9 
f()10 void f()
11 {
12   t1 v1;
13   t2 v2;
14   t3 v3;
15   s2 v4;
16   E e;
17 
18   e = (E)v4;
19   v4 = (s2)e;
20 
21   v2 = (t2)v1; // expected-error {{invalid conversion between vector type \
22 't2' (vector of 16 'char' values) and 't1' (vector of 1 'long long' value) of different size}}
23   v1 = (t1)v2; // expected-error {{invalid conversion between vector type \
24 't1' (vector of 1 'long long' value) and 't2' (vector of 16 'char' values) of different size}}
25   v3 = (t3)v2;
26 
27   v1 = (t1)(char *)10; // expected-error {{invalid conversion between vector \
28 type 't1' (vector of 1 'long long' value) and scalar type 'char *'}}
29   v1 = (t1)(long long)10;
30   v1 = (t1)(short)10; // expected-error {{invalid conversion between vector \
31 type 't1' (vector of 1 'long long' value) and integer type 'short' of different size}}
32 
33   long long r1 = (long long)v1;
34   short r2 = (short)v1; // expected-error {{invalid conversion between vector \
35 type 't1' (vector of 1 'long long' value) and integer type 'short' of different size}}
36   char *r3 = (char *)v1; // expected-error {{invalid conversion between vector\
37  type 't1' (vector of 1 'long long' value) and scalar type 'char *'}}
38 }
39 
40 
41 void f2(t2 X); // expected-note{{passing argument to parameter 'X' here}}
42 
f3(t3 Y)43 void f3(t3 Y) {
44   f2(Y);  // expected-warning {{incompatible vector types passing 't3' (vector of 4 'float' values) to parameter of type 't2' (vector of 16 'char' values)}}
45 }
46 
47 typedef float float2 __attribute__ ((vector_size (8)));
48 typedef __attribute__((vector_size(8))) double float64x1_t;
49 typedef __attribute__((vector_size(16))) double float64x2_t;
50 float64x1_t vget_low_f64(float64x2_t __p0);
51 typedef float float16 __attribute__((__vector_size__(16)));
52 typedef signed int vSInt32 __attribute__((__vector_size__(16)));
53 typedef unsigned int vUInt32 __attribute__((__vector_size__(16)));
54 
f4()55 void f4() {
56   float2 f2;
57   double d, a, b, c;
58   float64x2_t v = {0.0, 1.0};
59   f2 += d; // expected-error {{cannot convert between scalar type 'double' and vector type 'float2' (vector of 2 'float' values) as implicit conversion would cause truncation}}
60   d += f2; // expected-error {{assigning to 'double' from incompatible type 'float2' (vector of 2 'float' values)}}
61   a = 3.0 + vget_low_f64(v);
62   b = vget_low_f64(v) + 3.0;
63   c = vget_low_f64(v);
64   c -= vget_low_f64(v);
65   // LAX conversions between scalar and vector types require same size and one element sized vectors.
66   d = f2; // expected-error {{assigning to 'double' from incompatible type 'float2'}}
67   d = d + f2; // expected-error {{assigning to 'double' from incompatible type 'float2'}}
68 }
69 
70 // rdar://15931426
71 // Don't permit a lax conversion to and from a pointer type.
72 typedef short short_sizeof_pointer __attribute__((vector_size(sizeof(void*))));
f5()73 void f5() {
74   short_sizeof_pointer v;
75   void *ptr;
76   v = ptr; // expected-error-re {{assigning to 'short_sizeof_pointer' (vector of {{[0-9]+}} 'short' values) from incompatible type 'void *'}}
77   ptr = v; // expected-error {{assigning to 'void *' from incompatible type 'short_sizeof_pointer'}}
78 }
79 
f6(vSInt32 a0)80 void f6(vSInt32 a0) {
81   vUInt32 counter = (float16){0.0f, 0.0f, 0.0f, 0.0f}; // expected-warning {{incompatible vector types initializing 'vUInt32' (vector of 4 'unsigned int' values) with an expression of type 'float16' (vector of 4 'float' values)}}
82   counter -= a0;
83 }
84