clang/test/SemaCXX/attr-arm-sve-vector-bits.cpp

   1 // RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sve -target-feature +bf16 -ffreestanding -fsyntax-only -verify -std=c++11 -mvscale-min=4 -mvscale-max=4 -Wconversion %s
   2 // expected-no-diagnostics
   3
   4 #include <stdint.h>
   5
   6 #define N __ARM_FEATURE_SVE_BITS
   7
   8 typedef __SVInt8_t svint8_t;
   9 typedef svint8_t fixed_int8_t __attribute__((arm_sve_vector_bits(N)));
  10 typedef int8_t gnu_int8_t __attribute__((vector_size(N / 8)));
  11
  12 typedef __SVBool_t svbool_t;
  13 typedef svbool_t fixed_bool_t __attribute__((arm_sve_vector_bits(N)));
  14 typedef int8_t gnu_bool_t __attribute__((vector_size(N / 64)));
  15
  16 template<typename T> struct S { T var; };
  17
  18 S<fixed_int8_t> s;
  19
  20 // Test implicit casts between VLA and VLS vectors
  21 svint8_t to_svint8_t(fixed_int8_t x) { return x; }
  22 fixed_int8_t from_svint8_t(svint8_t x) { return x; }
  23
  24 // Test implicit casts between GNU and VLA vectors
  25 svint8_t to_svint8_t__from_gnu_int8_t(gnu_int8_t x) { return x; }
  26 gnu_int8_t from_svint8_t__to_gnu_int8_t(svint8_t x) { return x; }
  27
  28 // Test implicit casts between GNU and VLS vectors
  29 fixed_int8_t to_fixed_int8_t__from_gnu_int8_t(gnu_int8_t x) { return x; }
  30 gnu_int8_t from_fixed_int8_t__to_gnu_int8_t(fixed_int8_t x) { return x; }
  31
  32 // Test implicit casts between VLA and VLS predicates
  33 svbool_t to_svbool_t(fixed_bool_t x) { return x; }
  34 fixed_bool_t from_svbool_t(svbool_t x) { return x; }
  35
  36 // Test implicit casts between GNU and VLA predicates
  37 svbool_t to_svbool_t__from_gnu_bool_t(gnu_bool_t x) { return x; }
  38 gnu_bool_t from_svbool_t__to_gnu_bool_t(svbool_t x) { return x; }