clang/test/Sema/ext_vector_casts.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-macos10.7.0 -fsyntax-only -verify -flax-vector-conversions=none -Wconversion %s
   2
   3 typedef __attribute__((ext_vector_type(8))) _Bool BoolVector;
   4
   5 typedef __attribute__(( ext_vector_type(2) )) float float2;
   6 typedef __attribute__(( ext_vector_type(3) )) float float3;
   7 typedef __attribute__(( ext_vector_type(4) )) int int4;
   8 typedef __attribute__(( ext_vector_type(8) )) short short8;
   9 typedef __attribute__(( ext_vector_type(4) )) float float4;
  10 typedef float t3 __attribute__ ((vector_size (16)));
  11 typedef __typeof__(sizeof(int)) size_t;
  12 typedef unsigned long ulong2 __attribute__ ((ext_vector_type(2)));
  13 typedef size_t stride4 __attribute__((ext_vector_type(4)));
  14
  15 static void test(void) {
  16     float2 vec2;
  17     float3 vec3;
  18     float4 vec4, vec4_2;
  19     int4 ivec4;
  20     short8 ish8;
  21     t3 vec4_3;
  22     int *ptr;
  23     int i;
  24
  25     vec3 += vec2; // expected-error {{cannot convert between vector values of different size}}
  26     vec4 += vec3; // expected-error {{cannot convert between vector values of different size}}
  27
  28     vec4 = 5.0f;
  29     vec4 = (float4)5.0f;
  30     vec4 = (float4)5;
  31     vec4 = (float4)vec4_3;
  32
  33     ivec4 = (int4)5.0f;
  34     ivec4 = (int4)5;
  35     ivec4 = (int4)vec4_3;
  36
  37     i = (int)ivec4; // expected-error {{invalid conversion between vector type 'int4' (vector of 4 'int' values) and integer type 'int' of different size}}
  38     i = ivec4; // expected-error {{assigning to 'int' from incompatible type 'int4' (vector of 4 'int' values)}}
  39
  40     ivec4 = (int4)ptr; // expected-error {{invalid conversion between vector type 'int4' (vector of 4 'int' values) and scalar type 'int *'}}
  41
  42     vec4 = (float4)vec2; // expected-error {{invalid conversion between ext-vector type 'float4' (vector of 4 'float' values) and 'float2' (vector of 2 'float' values)}}
  43
  44     ish8 += 5;
  45     ivec4 *= 5;
  46      vec4 /= 5.2f;
  47      vec4 %= 4; // expected-error {{invalid operands to binary expression ('float4' (vector of 4 'float' values) and 'int')}}
  48     ivec4 %= 4;
  49     ivec4 += vec4; // expected-error {{cannot convert between vector values of different size ('int4' (vector of 4 'int' values) and 'float4' (vector of 4 'float' values))}}
  50     ivec4 += (int4)vec4;
  51     ivec4 -= ivec4;
  52     ivec4 |= ivec4;
  53     ivec4 += ptr; // expected-error {{cannot convert between vector and non-scalar values ('int4' (vector of 4 'int' values) and 'int *')}}
  54 }
  55
  56 typedef __attribute__(( ext_vector_type(2) )) float2 vecfloat2; // expected-error{{invalid vector element type 'float2' (vector of 2 'float' values)}}
  57
  58 void inc(float2 f2) {
  59   f2++; // expected-error{{cannot increment value of type 'float2' (vector of 2 'float' values)}}
  60   __real f2; // expected-error{{invalid type 'float2' (vector of 2 'float' values) to __real operator}}
  61 }
  62
  63 typedef enum
  64 {
  65     uchar_stride = 1,
  66     uchar4_stride = 4,
  67     ushort4_stride = 8,
  68     short4_stride = 8,
  69     uint4_stride = 16,
  70     int4_stride = 16,
  71     float4_stride = 16,
  72 } PixelByteStride;
  73
  74 stride4 RDar15091442_get_stride4(int4 x, PixelByteStride pixelByteStride);
  75 stride4 RDar15091442_get_stride4(int4 x, PixelByteStride pixelByteStride)
  76 {
  77     stride4 stride;
  78     // This previously caused an assertion failure.
  79     stride.lo = ((ulong2) x) * pixelByteStride; // no-warning
  80     return stride;
  81 }
  82
  83 // rdar://16196902
  84 typedef __attribute__((ext_vector_type(4))) float float32x4_t;
  85
  86 typedef float C3DVector3 __attribute__((ext_vector_type(3)));
  87
  88 extern float32x4_t vabsq_f32(float32x4_t __a);
  89
  90 C3DVector3 Func(const C3DVector3 a) {
  91     return (C3DVector3)vabsq_f32((float32x4_t)a); // expected-error {{invalid conversion between ext-vector type 'float32x4_t' (vector of 4 'float' values) and 'C3DVector3' (vector of 3 'float' values)}}
  92 }
  93
  94 // rdar://16350802
  95 typedef double double2 __attribute__ ((ext_vector_type(2)));
  96
  97 static void splats(int i, long l, __uint128_t t, float f, double d) {
  98   short8 vs = 0;
  99   int4 vi = i;
 100   ulong2 vl = (unsigned long)l;
 101   float2 vf = f;
 102   double2 vd = d;
 103
 104   vs = 65536 + vs; // expected-warning {{implicit conversion from 'int' to 'short8' (vector of 8 'short' values) changes value from 65536 to 0}}
 105   vs = vs + i; // expected-warning {{implicit conversion loses integer precision}}
 106   vs = vs + 1;
 107   vs = vs + 1.f; // expected-error {{cannot convert between vector values of different size}}
 108
 109   vi = l + vi; // expected-warning {{implicit conversion loses integer precision}}
 110   vi = 1 + vi;
 111   vi = vi + 2.0; // expected-error {{cannot convert between vector values of different size}}
 112   vi = vi + 0xffffffff; // expected-warning {{implicit conversion changes signedness}}
 113
 114   vl = l + vl; // expected-warning {{implicit conversion changes signedness}}
 115   vl = vl + t; // expected-warning {{implicit conversion loses integer precision}}
 116
 117   vf = 1 + vf;
 118   vf = l + vf; // expected-warning {{implicit conversion from 'long' to 'float2' (vector of 2 'float' values) may lose precision}}
 119   vf = 2.0 + vf;
 120   vf = d + vf; // expected-warning {{implicit conversion loses floating-point precision}}
 121   vf = vf + 0xffffffff; // expected-warning {{implicit conversion from 'unsigned int' to 'float2' (vector of 2 'float' values) changes value from 4294967295 to 4294967296}}
 122   vf = vf + 2.1; // expected-warning {{implicit conversion loses floating-point precision}}
 123
 124   vd = l + vd; // expected-warning {{implicit conversion from 'long' to 'double2' (vector of 2 'double' values) may lose precision}}
 125   vd = vd + t; // expected-warning {{implicit conversion from '__uint128_t' (aka 'unsigned __int128') to 'double2' (vector of 2 'double' values) may lose precision}}
 126 }