clang/test/Sema/ext_vector_components.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 typedef __attribute__(( ext_vector_type(2) )) float float2;
   4 typedef __attribute__(( ext_vector_type(3) )) float float3;
   5 typedef __attribute__(( ext_vector_type(4) )) float float4;
   6 typedef __attribute__(( ext_vector_type(16) )) float float16;
   7
   8 static float4 vec4_0 = (float4)0.5f;
   9
  10 static void test(void) {
  11     float2 vec2, vec2_2;
  12     float3 vec3;
  13     float4 vec4, vec4_2, *vec4p;
  14     float16 vec16;
  15     float f;
  16
  17     vec2.z; // expected-error {{vector component access exceeds type 'float2'}}
  18     vec2.xyzw; // expected-error {{vector component access exceeds type 'float2'}}
  19     vec4.xyzw; // expected-warning {{expression result unused}}
  20     vec4.xyzc; // expected-error {{illegal vector component name 'c'}}
  21     vec4.s01z; // expected-error {{illegal vector component name 'z'}}
  22     vec2 = vec4.s01; // legal, shorten
  23     vec2 = vec4.S01; // legal, shorten
  24
  25     vec3 = vec4.xyz; // legal, shorten
  26     f = vec2.x; // legal, shorten
  27     f = vec4.xy.x; // legal, shorten
  28
  29     vec4_2.xyzx = vec4.xyzw; // expected-error {{vector is not assignable (contains duplicate components)}}
  30     vec4_2.xyzz = vec4.xyzw; // expected-error {{vector is not assignable (contains duplicate components)}}
  31     vec4_2.xyyw = vec4.xyzw; // expected-error {{vector is not assignable (contains duplicate components)}}
  32     vec2.x = f;
  33     vec2.xx = vec2_2.xy; // expected-error {{vector is not assignable (contains duplicate components)}}
  34     vec2.yx = vec2_2.xy;
  35     vec4 = (float4){ 1,2,3,4 };
  36     vec4.xy.w; // expected-error {{vector component access exceeds type 'float2'}}
  37     vec4.s06; // expected-error {{vector component access exceeds type 'float4'}}
  38     vec4.x = vec16.sf;
  39     vec4.x = vec16.sF;
  40
  41     vec4p->yz = vec4p->xy;
  42
  43     vec2.a; // expected-error {{vector component access exceeds type 'float2'}}
  44     vec2.rgba; // expected-error {{vector component access exceeds type 'float2'}}
  45     vec4.rgba; // expected-warning {{expression result unused}}
  46     vec4.rgbz; // expected-error {{illegal vector component name 'z'}}
  47     vec4.rgbc; // expected-error {{illegal vector component name 'c'}}
  48     vec4.xyzr; // expected-error {{illegal vector component name 'r'}}
  49     vec4.s01b; // expected-error {{vector component access exceeds type 'float4'}}
  50
  51     vec3 = vec4.rgb; // legal, shorten
  52     f = vec2.r; // legal, shorten
  53     f = vec4.rg.r; // legal, shorten
  54     vec4_2.rgba = vec4.xyzw; // legal, no intermingling
  55
  56     vec4_2.rgbr = vec4.rgba; // expected-error {{vector is not assignable (contains duplicate components)}}
  57     vec4_2.rgbb = vec4.rgba; // expected-error {{vector is not assignable (contains duplicate components)}}
  58     vec4_2.rgga = vec4.rgba; // expected-error {{vector is not assignable (contains duplicate components)}}
  59     vec2.x = f;
  60     vec2.rr = vec2_2.rg; // expected-error {{vector is not assignable (contains duplicate components)}}
  61     vec2.gr = vec2_2.rg;
  62     vec2.gr.g = vec2_2.r;
  63     vec4 = (float4){ 1,2,3,4 };
  64     vec4.rg.b; // expected-error {{vector component access exceeds type 'float2'}}
  65     vec4.r = vec16.sf;
  66     vec4.g = vec16.sF;
  67
  68     vec4p->gb = vec4p->rg;
  69 }
  70
  71 float2 lo(float3 x) { return x.lo; }
  72 float2 hi(float3 x) { return x.hi; }
  73 float2 ev(float3 x) { return x.even; }
  74 float2 od(float3 x) { return x.odd; }