clang/test/Sema/vector-gcc-compat.c

   1 // RUN: %clang_cc1 %s -verify -fsyntax-only -Weverything -Wno-unused-but-set-variable -triple x86_64-apple-darwin10
   2
   3 // Test the compatibility of clang's vector extensions with gcc's vector
   4 // extensions for C. Notably &&, ||, ?: and ! are not available.
   5 typedef long long v2i64 __attribute__((vector_size(16)));
   6 typedef int v2i32 __attribute__((vector_size(8)));
   7 typedef short v2i16 __attribute__((vector_size(4)));
   8 typedef char v2i8 __attribute__((vector_size(2)));
   9
  10 typedef unsigned long long v2u64 __attribute__((vector_size(16)));
  11 typedef unsigned int v2u32 __attribute__((vector_size(8)));
  12 typedef unsigned short v2u16 __attribute__((vector_size(4)));
  13 typedef unsigned char v2u8 __attribute__((vector_size(2)));
  14
  15 typedef float v4f32 __attribute__((vector_size(16)));
  16 typedef double v2f64 __attribute__((vector_size(16)));
  17 typedef double v4f64 __attribute__((vector_size(32)));
  18 typedef int v4i32 __attribute((vector_size(16)));
  19
  20 void arithmeticTest(void);
  21 void logicTest(void);
  22 void comparisonTest(void);
  23 void floatTestSignedType(char a, short b, int c, long long d);
  24 void floatTestUnsignedType(unsigned char a, unsigned short b, unsigned int c,
  25                            unsigned long long d);
  26 void floatTestConstant(void);
  27 void intTestType(char a, short b, int c, long long d);
  28 void intTestTypeUnsigned(unsigned char a, unsigned short b, unsigned int c,
  29                          unsigned long long d);
  30 void uintTestType(char a, short b, int c, long long d);
  31 void uintTestTypeUnsigned(unsigned char a, unsigned short b, unsigned int c,
  32                           unsigned long long d);
  33 void uintTestConstant(v2u64 v2u64_a, v2u32 v2u32_a, v2u16 v2u16_a, v2u8 v2u8_a);
  34 void intTestConstant(v2i64 v2i64_a, v2i32 v2i32_a, v2i16 v2i16_a, v2i8 v2i8_a);
  35
  36 void arithmeticTest(void) {
  37   v2i64 v2i64_a = (v2i64){0, 1};
  38   v2i64 v2i64_r;
  39
  40   v2i64_r = v2i64_a + 1;
  41   v2i64_r = v2i64_a - 1;
  42   v2i64_r = v2i64_a * 1;
  43   v2i64_r = v2i64_a / 1;
  44   v2i64_r = v2i64_a % 1;
  45
  46   v2i64_r = 1 + v2i64_a;
  47   v2i64_r = 1 - v2i64_a;
  48   v2i64_r = 1 * v2i64_a;
  49   v2i64_r = 1 / v2i64_a;
  50   v2i64_r = 1 % v2i64_a;
  51
  52   v2i64_a += 1;
  53   v2i64_a -= 1;
  54   v2i64_a *= 1;
  55   v2i64_a /= 1;
  56   v2i64_a %= 1;
  57 }
  58
  59 void comparisonTest(void) {
  60   v2i64 v2i64_a = (v2i64){0, 1};
  61   v2i64 v2i64_r;
  62
  63   v2i64_r = v2i64_a == 1;
  64   v2i64_r = v2i64_a != 1;
  65   v2i64_r = v2i64_a < 1;
  66   v2i64_r = v2i64_a > 1;
  67   v2i64_r = v2i64_a <= 1;
  68   v2i64_r = v2i64_a >= 1;
  69
  70   v2i64_r = 1 == v2i64_a;
  71   v2i64_r = 1 != v2i64_a;
  72   v2i64_r = 1 < v2i64_a;
  73   v2i64_r = 1 > v2i64_a;
  74   v2i64_r = 1 <= v2i64_a;
  75   v2i64_r = 1 >= v2i64_a;
  76 }
  77
  78 void logicTest(void) {
  79   v2i64 v2i64_a = (v2i64){0, 1};
  80   v2i64 v2i64_b = (v2i64){2, 1};
  81   v2i64 v2i64_c = (v2i64){3, 1};
  82   v2i64 v2i64_r;
  83
  84   v2i64_r = !v2i64_a; // expected-error {{invalid argument type 'v2i64' (vector of 2 'long long' values) to unary expression}}
  85   v2i64_r = ~v2i64_a;
  86
  87   v2i64_r = v2i64_a ? v2i64_b : v2i64_c; // expected-error {{used type 'v2i64' (vector of 2 'long long' values) where arithmetic or pointer type is required}}
  88
  89   v2i64_r = v2i64_a & 1;
  90   v2i64_r = v2i64_a | 1;
  91   v2i64_r = v2i64_a ^ 1;
  92
  93   v2i64_r = 1 & v2i64_a;
  94   v2i64_r = 1 | v2i64_a;
  95   v2i64_r = 1 ^ v2i64_a;
  96
  97   v2i64_a &= 1;
  98   v2i64_a |= 1;
  99   v2i64_a ^= 1;
 100
 101   v2i64_r = v2i64_a && 1; // expected-error {{logical expression with vector type 'v2i64' (vector of 2 'long long' values) and non-vector type 'int' is only supported in C++}}
 102   v2i64_r = v2i64_a || 1; // expected-error {{logical expression with vector type 'v2i64' (vector of 2 'long long' values) and non-vector type 'int' is only supported in C++}}
 103
 104   v2i64_r = v2i64_a && v2i64_a; // expected-error {{logical expression with vector types 'v2i64' (vector of 2 'long long' values) and 'v2i64' is only supported in C++}}
 105   v2i64_r = v2i64_a || v2i64_a; // expected-error {{logical expression with vector types 'v2i64' (vector of 2 'long long' values) and 'v2i64' is only supported in C++}}
 106
 107   v2i64_r = v2i64_a << 1;
 108   v2i64_r = v2i64_a >> 1;
 109
 110   v2i64_r = 1 << v2i64_a;
 111   v2i64_r = 1 >> v2i64_a;
 112
 113   v2i64_a <<= 1;
 114   v2i64_a >>= 1;
 115 }
 116
 117 // For operations with floating point types, we check that integer constants
 118 // can be respresented, or failing that checking based on the integer types.
 119 void floatTestConstant(void) {
 120   // Test that constants added to floats must be expressible as floating point
 121   // numbers.
 122   v4f32 v4f32_a = {0.4f, 0.4f, 0.4f, 0.4f};
 123   v4f32_a = v4f32_a + 1;
 124   v4f32_a = v4f32_a + 0xFFFFFF;
 125   v4f32_a = v4f32_a + (-1567563LL);
 126   v4f32_a = v4f32_a + (16777208);
 127   v4f32_a = v4f32_a + (16777219); // expected-error {{cannot convert between scalar type 'int' and vector type 'v4f32' (vector of 4 'float' values) as implicit conversion would cause truncation}}
 128 }
 129
 130 void floatTestConstantComparison(void);
 131 void doubleTestConstantComparison(void);
 132
 133 void floatTestConstantComparison(void) {
 134   v4f32 v4f32_a = {0.4f, 0.4f, 0.4f, 0.4f};
 135   v4i32 v4i32_r;
 136   v4i32_r = v4f32_a > 0.4f;
 137   v4i32_r = v4f32_a >= 0.4f;
 138   v4i32_r = v4f32_a < 0.4f;
 139   v4i32_r = v4f32_a <= 0.4f;
 140   v4i32_r = v4f32_a == 0.4f; // expected-warning {{comparing floating point with == or != is unsafe}}
 141   v4i32_r = v4f32_a != 0.4f; // expected-warning {{comparing floating point with == or != is unsafe}}
 142 }
 143
 144 void doubleTestConstantComparison(void) {
 145   v2f64 v2f64_a = {0.4, 0.4};
 146   v2i64 v2i64_r;
 147   v2i64_r = v2f64_a > 0.4;
 148   v2i64_r = v2f64_a >= 0.4;
 149   v2i64_r = v2f64_a < 0.4;
 150   v2i64_r = v2f64_a <= 0.4;
 151   v2i64_r = v2f64_a == 0.4; // expected-warning {{comparing floating point with == or != is unsafe}}
 152   v2i64_r = v2f64_a != 0.4; // expected-warning {{comparing floating point with == or != is unsafe}}
 153 }
 154
 155 void floatTestUnsignedType(unsigned char a, unsigned short b, unsigned int c,
 156                            unsigned long long d) {
 157   v4f32 v4f32_a = {0.4f, 0.4f, 0.4f, 0.4f};
 158   v4f64 v4f64_b = {0.4, 0.4, 0.4, 0.4};
 159
 160   v4f32_a = v4f32_a + a;
 161   v4f32_a = v4f32_a + b;
 162   v4f32_a = v4f32_a + c; // expected-error {{cannot convert between scalar type 'unsigned int' and vector type 'v4f32' (vector of 4 'float' values) as implicit conversion would cause truncation}}
 163   v4f32_a = v4f32_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v4f32' (vector of 4 'float' values) as implicit conversion would cause truncation}}
 164
 165   v4f64_b = v4f64_b + a;
 166   v4f64_b = v4f64_b + b;
 167   v4f64_b = v4f64_b + c;
 168   v4f64_b = v4f64_b + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v4f64' (vector of 4 'double' values) as implicit conversion would cause truncation}}
 169 }
 170
 171 void floatTestSignedType(char a, short b, int c, long long d) {
 172   v4f32 v4f32_a = {0.4f, 0.4f, 0.4f, 0.4f};
 173   v4f64 v4f64_b = {0.4, 0.4, 0.4, 0.4};
 174
 175   v4f32_a = v4f32_a + a;
 176   v4f32_a = v4f32_a + b;
 177   v4f32_a = v4f32_a + c; // expected-error {{cannot convert between scalar type 'int' and vector type 'v4f32' (vector of 4 'float' values) as implicit conversion would cause truncation}}
 178   v4f32_a = v4f32_a + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v4f32' (vector of 4 'float' values) as implicit conversion would cause truncation}}
 179
 180   v4f64_b = v4f64_b + a;
 181   v4f64_b = v4f64_b + b;
 182   v4f64_b = v4f64_b + c;
 183   v4f64_b = v4f64_b + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v4f64' (vector of 4 'double' values) as implicit conversion would cause truncation}}
 184 }
 185
 186 void intTestType(char a, short b, int c, long long d) {
 187   v2i64 v2i64_a = {1, 2};
 188   v2i32 v2i32_a = {1, 2};
 189   v2i16 v2i16_a = {1, 2};
 190   v2i8 v2i8_a = {1, 2};
 191
 192   v2i64_a = v2i64_a + d;
 193   v2i64_a = v2i64_a + c;
 194   v2i64_a = v2i64_a + b;
 195   v2i64_a = v2i64_a + a;
 196
 197   v2i32_a = v2i32_a + d; // expected-warning {{implicit conversion loses integer precision: 'long long' to 'v2i32' (vector of 2 'int' values)}}
 198   v2i32_a = v2i32_a + c;
 199   v2i32_a = v2i32_a + b;
 200   v2i32_a = v2i32_a + a;
 201
 202   v2i16_a = v2i16_a + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v2i16' (vector of 2 'short' values) as implicit conversion would cause truncation}}
 203   v2i16_a = v2i16_a + c; // expected-warning {{implicit conversion loses integer precision: 'int' to 'v2i16' (vector of 2 'short' values)}}
 204   v2i16_a = v2i16_a + b;
 205   v2i16_a = v2i16_a + a;
 206
 207   v2i8_a = v2i8_a + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 208   v2i8_a = v2i8_a + c; // expected-error {{cannot convert between scalar type 'int' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 209   v2i8_a = v2i8_a + b; // expected-warning {{implicit conversion loses integer precision: 'short' to 'v2i8' (vector of 2 'char' values)}}
 210   v2i8_a = v2i8_a + a;
 211 }
 212
 213 void intTestTypeUnsigned(unsigned char a, unsigned short b, unsigned int c,
 214                          unsigned long long d) {
 215   v2i64 v2i64_a = {1, 2};
 216   v2i32 v2i32_a = {1, 2};
 217   v2i16 v2i16_a = {1, 2};
 218   v2i8 v2i8_a = {1, 2};
 219
 220   v2i64_a = v2i64_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v2i64' (vector of 2 'long long' values) as implicit conversion would cause truncation}}
 221
 222   v2i64_a = v2i64_a + c;
 223   v2i64_a = v2i64_a + b;
 224   v2i64_a = v2i64_a + a;
 225
 226   v2i32_a = v2i32_a + d; // expected-warning {{implicit conversion loses integer precision: 'unsigned long long' to 'v2i32' (vector of 2 'int' values)}}
 227   v2i32_a = v2i32_a + c; // expected-error {{cannot convert between scalar type 'unsigned int' and vector type 'v2i32' (vector of 2 'int' values) as implicit conversion would cause truncation}}
 228   v2i32_a = v2i32_a + b;
 229   v2i32_a = v2i32_a + a;
 230
 231   v2i16_a = v2i16_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v2i16' (vector of 2 'short' values) as implicit conversion would cause truncation}}
 232   v2i16_a = v2i16_a + c; // expected-warning {{implicit conversion loses integer precision: 'unsigned int' to 'v2i16' (vector of 2 'short' values)}}
 233   v2i16_a = v2i16_a + b; // expected-error {{cannot convert between scalar type 'unsigned short' and vector type 'v2i16' (vector of 2 'short' values) as implicit conversion would cause truncation}}
 234   v2i16_a = v2i16_a + a;
 235
 236   v2i8_a = v2i8_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 237   v2i8_a = v2i8_a + c; // expected-error {{cannot convert between scalar type 'unsigned int' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 238   v2i8_a = v2i8_a + b; // expected-warning {{implicit conversion loses integer precision: 'unsigned short' to 'v2i8' (vector of 2 'char' values)}}
 239   v2i8_a = v2i8_a + a; // expected-error {{cannot convert between scalar type 'unsigned char' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 240 }
 241
 242 void uintTestType(char a, short b, int c, long long d) {
 243   v2u64 v2u64_a = {1, 2};
 244   v2u32 v2u32_a = {1, 2};
 245   v2u16 v2u16_a = {1, 2};
 246   v2u8 v2u8_a = {1, 2};
 247
 248   v2u64_a = v2u64_a + d; // expected-warning {{implicit conversion changes signedness: 'long long' to 'v2u64' (vector of 2 'unsigned long long' values)}}
 249   v2u64_a = v2u64_a + c; // expected-warning {{implicit conversion changes signedness: 'int' to 'v2u64' (vector of 2 'unsigned long long' values)}}
 250   v2u64_a = v2u64_a + b; // expected-warning {{implicit conversion changes signedness: 'short' to 'v2u64' (vector of 2 'unsigned long long' values)}}
 251   v2u64_a = v2u64_a + a; // expected-warning {{implicit conversion changes signedness: 'char' to 'v2u64' (vector of 2 'unsigned long long' values)}}
 252
 253   v2u32_a = v2u32_a + d; // expected-warning {{implicit conversion loses integer precision: 'long long' to 'v2u32' (vector of 2 'unsigned int' values)}}
 254   v2u32_a = v2u32_a + c; // expected-warning {{implicit conversion changes signedness: 'int' to 'v2u32' (vector of 2 'unsigned int' values)}}
 255   v2u32_a = v2u32_a + b; // expected-warning {{implicit conversion changes signedness: 'short' to 'v2u32' (vector of 2 'unsigned int' values)}}
 256   v2u32_a = v2u32_a + a; // expected-warning {{implicit conversion changes signedness: 'char' to 'v2u32' (vector of 2 'unsigned int' values)}}
 257
 258   v2u16_a = v2u16_a + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v2u16' (vector of 2 'unsigned short' values) as implicit conversion would cause truncation}}
 259   v2u16_a = v2u16_a + c; // expected-warning {{implicit conversion loses integer precision: 'int' to 'v2u16' (vector of 2 'unsigned short' values)}}
 260   v2u16_a = v2u16_a + b; // expected-warning {{implicit conversion changes signedness: 'short' to 'v2u16' (vector of 2 'unsigned short' values)}}
 261   v2u16_a = v2u16_a + a; // expected-warning {{implicit conversion changes signedness: 'char' to 'v2u16' (vector of 2 'unsigned short' values)}}
 262
 263   v2u8_a = v2u8_a + d; // expected-error {{cannot convert between scalar type 'long long' and vector type 'v2u8' (vector of 2 'unsigned char' values) as implicit conversion would cause truncation}}
 264   v2u8_a = v2u8_a + c; // expected-error {{cannot convert between scalar type 'int' and vector type 'v2u8' (vector of 2 'unsigned char' values) as implicit conversion would cause truncation}}
 265   v2u8_a = v2u8_a + b; // expected-warning {{implicit conversion loses integer precision: 'short' to 'v2u8' (vector of 2 'unsigned char' values)}}
 266   v2u8_a = v2u8_a + a; // expected-warning {{implicit conversion changes signedness: 'char' to 'v2u8' (vector of 2 'unsigned char' values)}}
 267 }
 268
 269 void uintTestTypeUnsigned(unsigned char a, unsigned short b, unsigned int c,
 270                           unsigned long long d) {
 271   v2u64 v2u64_a = {1, 2};
 272   v2u32 v2u32_a = {1, 2};
 273   v2u16 v2u16_a = {1, 2};
 274   v2u8 v2u8_a = {1, 2};
 275
 276   v2u64_a = v2u64_a + d;
 277   v2u64_a = v2u64_a + c;
 278   v2u64_a = v2u64_a + b;
 279   v2u64_a = v2u64_a + a;
 280
 281   v2u32_a = v2u32_a + d; // expected-warning {{implicit conversion loses integer precision: 'unsigned long long' to 'v2u32' (vector of 2 'unsigned int' values)}}
 282   v2u32_a = v2u32_a + c;
 283   v2u32_a = v2u32_a + b;
 284   v2u32_a = v2u32_a + a;
 285
 286   v2u16_a = v2u16_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v2u16' (vector of 2 'unsigned short' values) as implicit conversion would cause truncation}}
 287   v2u16_a = v2u16_a + c; // expected-warning {{implicit conversion loses integer precision: 'unsigned int' to 'v2u16' (vector of 2 'unsigned short' values)}}
 288   v2u16_a = v2u16_a + b;
 289   v2u16_a = v2u16_a + a;
 290
 291   v2u8_a = v2u8_a + d; // expected-error {{cannot convert between scalar type 'unsigned long long' and vector type 'v2u8' (vector of 2 'unsigned char' values) as implicit conversion would cause truncation}}
 292   v2u8_a = v2u8_a + c; // expected-error {{cannot convert between scalar type 'unsigned int' and vector type 'v2u8' (vector of 2 'unsigned char' values) as implicit conversion would cause truncation}}
 293   v2u8_a = v2u8_a + b; // expected-warning {{implicit conversion loses integer precision: 'unsigned short' to 'v2u8' (vector of 2 'unsigned char' values)}}
 294   v2u8_a = v2u8_a + a;
 295 }
 296
 297 void uintTestConstant(v2u64 v2u64_a, v2u32 v2u32_a, v2u16 v2u16_a,
 298                       v2u8 v2u8_a) {
 299   v2u64_a = v2u64_a + 0xFFFFFFFFFFFFFFFF;
 300   v2u32_a = v2u32_a + 0xFFFFFFFF;
 301   v2u16_a = v2u16_a + 0xFFFF;
 302   v2u8_a = v2u8_a + 0xFF;
 303
 304   v2u32_a = v2u32_a + 0x1FFFFFFFF; // expected-warning {{implicit conversion from 'long' to 'v2u32' (vector of 2 'unsigned int' values) changes value from 8589934591 to 4294967295}}
 305   v2u16_a = v2u16_a + 0x1FFFF;     // expected-warning {{implicit conversion from 'int' to 'v2u16' (vector of 2 'unsigned short' values) changes value from 131071 to 65535}}
 306   v2u8_a = v2u8_a + 0x1FF;         // expected-error {{cannot convert between scalar type 'int' and vector type 'v2u8' (vector of 2 'unsigned char' values) as implicit conversion would cause truncation}}
 307 }
 308
 309 void intTestConstant(v2i64 v2i64_a, v2i32 v2i32_a, v2i16 v2i16_a, v2i8 v2i8_a) {
 310   // Legal upper bounds.
 311   v2i64_a = v2i64_a + (long long)0x7FFFFFFFFFFFFFFF;
 312   v2i32_a = v2i32_a + (int)0x7FFFFFFF;
 313   v2i16_a = v2i16_a + (short)0x7FFF;
 314   v2i8_a = v2i8_a + (char)0x7F;
 315
 316   // Legal lower bounds.
 317   v2i64_a = v2i64_a + (-9223372036854775807);
 318   v2i32_a = v2i32_a + (-2147483648);
 319   v2i16_a = v2i16_a + (-32768);
 320   v2i8_a = v2i8_a + (-128);
 321
 322   // One increment/decrement more than the type can hold
 323   v2i32_a = v2i32_a + 2147483648; // expected-warning {{implicit conversion from 'long' to 'v2i32' (vector of 2 'int' values) changes value from 2147483648 to -2147483648}}
 324   v2i16_a = v2i16_a + 32768;      // expected-warning {{implicit conversion from 'int' to 'v2i16' (vector of 2 'short' values) changes value from 32768 to -32768}}
 325   v2i8_a = v2i8_a + 128;          // expected-warning {{implicit conversion from 'int' to 'v2i8' (vector of 2 'char' values) changes value from 128 to -128}}
 326
 327   v2i32_a = v2i32_a + (-2147483649); // expected-warning {{implicit conversion from 'long' to 'v2i32' (vector of 2 'int' values) changes value from -2147483649 to 2147483647}}
 328   v2i16_a = v2i16_a + (-32769);      // expected-warning {{implicit conversion from 'int' to 'v2i16' (vector of 2 'short' values) changes value from -32769 to 32767}}
 329   v2i8_a = v2i8_a + (-129);          // expected-error {{cannot convert between scalar type 'int' and vector type 'v2i8' (vector of 2 'char' values) as implicit conversion would cause truncation}}
 330 }