clang/test/Frontend/fixed_point_conversions_const.c

   1 // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,SIGNED
   2 // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - -fpadding-on-unsigned-fixed-point | FileCheck %s --check-prefixes=CHECK,UNSIGNED
   3
   4 // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - -fexperimental-new-constant-interpreter | FileCheck %s --check-prefixes=CHECK,SIGNED
   5 // RUN: %clang_cc1 -ffixed-point -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - -fpadding-on-unsigned-fixed-point -fexperimental-new-constant-interpreter | FileCheck %s --check-prefixes=CHECK,UNSIGNED
   6
   7 // Between different fixed point types
   8 short _Accum sa_const = 2.5hk;
   9 // CHECK-DAG: @sa_const  = {{.*}}global i16 320, align 2
  10 _Accum a_const = 2.5hk;
  11 // CHECK-DAG: @a_const   = {{.*}}global i32 81920, align 4
  12 short _Accum sa_const2 = 2.5k;
  13 // CHECK-DAG: @sa_const2 = {{.*}}global i16 320, align 2
  14
  15 short _Accum sa_from_f_const = 0.5r;
  16 // CHECK-DAG: sa_from_f_const = {{.*}}global i16 64, align 2
  17 _Fract f_from_sa_const = 0.5hk;
  18 // CHECK-DAG: f_from_sa_const = {{.*}}global i16 16384, align 2
  19
  20 unsigned short _Accum usa_const = 2.5uk;
  21 unsigned _Accum ua_const = 2.5uhk;
  22 // SIGNED-DAG: @usa_const  = {{.*}}global i16 640, align 2
  23 // SIGNED-DAG: @ua_const   = {{.*}}global i32 163840, align 4
  24 // UNSIGNED-DAG:    @usa_const  = {{.*}}global i16 320, align 2
  25 // UNSIGNED-DAG:    @ua_const   = {{.*}}global i32 81920, align 4
  26
  27 // FixedPoint to integer
  28 int i_const = -128.0hk;
  29 // CHECK-DAG: @i_const  = {{.*}}global i32 -128, align 4
  30 int i_const2 = 128.0hk;
  31 // CHECK-DAG: @i_const2 = {{.*}}global i32 128, align 4
  32 int i_const3 = -128.0k;
  33 // CHECK-DAG: @i_const3 = {{.*}}global i32 -128, align 4
  34 int i_const4 = 128.0k;
  35 // CHECK-DAG: @i_const4 = {{.*}}global i32 128, align 4
  36 short s_const = -128.0k;
  37 // CHECK-DAG: @s_const  = {{.*}}global i16 -128, align 2
  38 short s_const2 = 128.0k;
  39 // CHECK-DAG: @s_const2 = {{.*}}global i16 128, align 2
  40
  41 // Integer to fixed point
  42 short _Accum sa_const5 = 2;
  43 // CHECK-DAG: @sa_const5 = {{.*}}global i16 256, align 2
  44 short _Accum sa_const6 = -2;
  45 // CHECK-DAG: @sa_const6 = {{.*}}global i16 -256, align 2
  46 short _Accum sa_const7 = -256;
  47 // CHECK-DAG: @sa_const7 = {{.*}}global i16 -32768, align 2
  48
  49 // Fixed point to floating point
  50 float fl_const = 1.0hk;
  51 // CHECK-DAG: @fl_const = {{.*}}global float 1.000000e+00, align 4
  52 float fl_const2 = -128.0k;
  53 // CHECK-DAG: @fl_const2 = {{.*}}global float -1.280000e+02, align 4
  54 float fl_const3 = 0.0872802734375k;
  55 // CHECK-DAG: @fl_const3 = {{.*}}global float 0x3FB6580000000000, align 4
  56 float fl_const4 = 192.5k;
  57 // CHECK-DAG: @fl_const4 = {{.*}}global float 1.925000e+02, align 4
  58 float fl_const5 = -192.5k;
  59 // CHECK-DAG: @fl_const5 = {{.*}}global float -1.925000e+02, align 4
  60
  61 // Floating point to fixed point
  62 _Accum a_fl_const = 1.0f;
  63 // CHECK-DAG: @a_fl_const = {{.*}}global i32 32768, align 4
  64 _Accum a_fl_const2 = -128.0f;
  65 // CHECK-DAG: @a_fl_const2 = {{.*}}global i32 -4194304, align 4
  66 _Accum a_fl_const3 = 0.0872802734375f;
  67 // CHECK-DAG: @a_fl_const3 = {{.*}}global i32 2860, align 4
  68 _Accum a_fl_const4 = 0.0872802734375;
  69 // CHECK-DAG: @a_fl_const4 = {{.*}}global i32 2860, align 4
  70 _Accum a_fl_const5 = -0.0872802734375f;
  71 // CHECK-DAG: @a_fl_const5 = {{.*}}global i32 -2860, align 4
  72 _Fract f_fl_const = 0.5f;
  73 // CHECK-DAG: @f_fl_const = {{.*}}global i16 16384, align 2
  74 _Fract f_fl_const2 = -0.75;
  75 // CHECK-DAG: @f_fl_const2 = {{.*}}global i16 -24576, align 2
  76 unsigned short _Accum usa_fl_const = 48.75f;
  77 // SIGNED-DAG: @usa_fl_const = {{.*}}global i16 12480, align 2
  78 // UNSIGNED-DAG: @usa_fl_const = {{.*}}global i16 6240, align 2
  79
  80 // Signedness
  81 unsigned short _Accum usa_const2 = 2.5hk;
  82 // SIGNED-DAG: @usa_const2  = {{.*}}global i16 640, align 2
  83 // UNSIGNED-DAG:    @usa_const2  = {{.*}}global i16 320, align 2
  84 short _Accum sa_const3 = 2.5hk;
  85 // CHECK-DAG: @sa_const3 = {{.*}}global i16 320, align 2
  86
  87 int i_const5 = 128.0uhk;
  88 unsigned int ui_const = 128.0hk;
  89 // CHECK-DAG: @i_const5  = {{.*}}global i32 128, align 4
  90 // CHECK-DAG: @ui_const  = {{.*}}global i32 128, align 4
  91
  92 short _Accum sa_const9 = 2u;
  93 // CHECK-DAG: @sa_const9 = {{.*}}global i16 256, align 2
  94 unsigned short _Accum usa_const3 = 2;
  95 // SIGNED-DAG: @usa_const3 = {{.*}}global i16 512, align 2
  96 // UNSIGNED-DAG:    @usa_const3 = {{.*}}global i16 256, align 2
  97
  98 // Overflow (this is undefined but allowed)
  99 short _Accum sa_const4 = 256.0k;
 100 unsigned int ui_const2 = -2.5hk;
 101 short _Accum sa_const8 = 256;
 102 unsigned short _Accum usa_const4 = -2;
 103
 104 // Saturation
 105 _Sat short _Accum sat_sa_const = 2.5hk;
 106 // CHECK-DAG: @sat_sa_const  = {{.*}}global i16 320, align 2
 107 _Sat short _Accum sat_sa_const2 = 256.0k;
 108 // CHECK-DAG: @sat_sa_const2 = {{.*}}global i16 32767, align 2
 109 _Sat unsigned short _Accum sat_usa_const = -1.0hk;
 110 // CHECK-DAG: @sat_usa_const = {{.*}}global i16 0, align 2
 111 _Sat unsigned short _Accum sat_usa_const2 = 256.0k;
 112 // SIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 -1, align 2
 113 // UNSIGNED-DAG:    @sat_usa_const2 = {{.*}}global i16 32767, align 2
 114
 115 _Sat short _Accum sat_sa_const3 = 256;
 116 // CHECK-DAG: @sat_sa_const3 = {{.*}}global i16 32767, align 2
 117 _Sat short _Accum sat_sa_const4 = -257;
 118 // CHECK-DAG: @sat_sa_const4 = {{.*}}global i16 -32768, align 2
 119 _Sat unsigned short _Accum sat_usa_const3 = -1;
 120 // CHECK-DAG: @sat_usa_const3 = {{.*}}global i16 0, align 2
 121 _Sat unsigned short _Accum sat_usa_const4 = 256;
 122 // SIGNED-DAG: @sat_usa_const4 = {{.*}}global i16 -1, align 2
 123 // UNSIGNED-DAG:    @sat_usa_const4 = {{.*}}global i16 32767, align 2