clang/test/Frontend/fixed_point_sub_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 -fpadding-on-unsigned-fixed-point -emit-llvm %s -o - | FileCheck %s --check-prefixes=CHECK,UNSIGNED
   3
   4 // Subtraction between different fixed point types
   5 short _Accum sa_const = 1.0hk - 2.0hk;
   6 // CHECK-DAG: @sa_const  = {{.*}}global i16 -128, align 2
   7 _Accum a_const = 1.0hk - 2.0k;
   8 // CHECK-DAG: @a_const   = {{.*}}global i32 -32768, align 4
   9 long _Accum la_const = 1.0hk - 2.0lk;
  10 // CHECK-DAG: @la_const  = {{.*}}global i64 -2147483648, align 8
  11 short _Accum sa_const2 = 0.5hr - 2.0hk;
  12 // CHECK-DAG: @sa_const2  = {{.*}}global i16 -192, align 2
  13 short _Accum sa_const3 = 0.5r - 2.0hk;
  14 // CHECK-DAG: @sa_const3  = {{.*}}global i16 -192, align 2
  15 short _Accum sa_const4 = 0.5lr - 2.0hk;
  16 // CHECK-DAG: @sa_const4  = {{.*}}global i16 -192, align 2
  17 short _Accum sa_const5 = 2.0hk - 0.5lr;
  18 // CHECK-DAG: @sa_const5  = {{.*}}global i16 192, align 2
  19
  20 // Unsigned subtraction
  21 unsigned short _Accum usa_const = 3.0uhk - 2.0uhk;
  22 // SIGNED-DAG:   @usa_const = {{.*}}global i16 256, align 2
  23 // UNSIGNED-DAG: @usa_const = {{.*}}global i16 128, align 2
  24
  25 // Unsigned - signed
  26 short _Accum sa_const6 = 1.0uhk - 2.0hk;
  27 // CHECK-DAG: @sa_const6 = {{.*}}global i16 -128, align 2
  28
  29 // Subtraction with negative number
  30 short _Accum sa_const7 = 0.5hr - (-2.0hk);
  31 // CHECK-DAG: @sa_const7 = {{.*}}global i16 320, align 2
  32
  33 // Int subtraction
  34 unsigned short _Accum usa_const2 = 2 - 0.5uhk;
  35 // SIGNED-DAG:   @usa_const2 = {{.*}}global i16 384, align 2
  36 // UNSIGNED-DAG: @usa_const2 = {{.*}}global i16 192, align 2
  37 short _Accum sa_const8 = 2 - (-0.5hk);
  38 // CHECK-DAG: @sa_const8 = {{.*}}global i16 320, align 2
  39 short _Accum sa_const9 = 257 - 2.0hk;
  40 // CHECK-DAG: @sa_const9 = {{.*}}global i16 32640, align 2
  41 long _Fract lf_const = 0.5lr - 1;
  42 // CHECK-DAG: @lf_const  = {{.*}}global i32 -1073741824, align 4
  43
  44 // Saturated subtraction
  45 _Sat short _Accum sat_sa_const = (_Sat short _Accum)128.0hk - (-128.0hk);
  46 // CHECK-DAG: @sat_sa_const = {{.*}}global i16 32767, align 2
  47 _Sat unsigned short _Accum sat_usa_const = (_Sat unsigned short _Accum)128.0uhk - (-128.0uhk);
  48 // CHECK-DAG: @sat_usa_const = {{.*}}global i16 0, align 2
  49 _Sat short _Accum sat_sa_const2 = (_Sat short _Accum)128.0hk - (-128);
  50 // CHECK-DAG: @sat_sa_const2 = {{.*}}global i16 32767, align 2
  51 _Sat unsigned short _Accum sat_usa_const2 = (_Sat unsigned short _Accum)128.0uhk - (-128);
  52 // SIGNED-DAG:   @sat_usa_const2 = {{.*}}global i16 -1, align 2
  53 // UNSIGNED-DAG: @sat_usa_const2 = {{.*}}global i16 32767, align 2
  54 _Sat unsigned short _Accum sat_usa_const3 = (_Sat unsigned short _Accum)0.5uhk - 2;
  55 // CHECK-DAG:   @sat_usa_const3 = {{.*}}global i16 0, align 2
  56 _Sat short _Accum sat_sa_const3 = (_Sat short _Accum)-128.0hk - 128;
  57 // CHECK-DAG: @sat_sa_const3 = {{.*}}global i16 -32768, align 2
  58 _Sat short _Accum sat_sa_const4 = (_Sat short _Accum)-150.0hk - 130.0lk;
  59 // CHECK-DAG: @sat_sa_const4 = {{.*}}global i16 -32768, align 2