clang/test/CodeGenOpenCL/half.cl

   1 // RUN: %clang_cc1 %s -emit-llvm -o - -triple spir-unknown-unknown | FileCheck %s
   2 // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-pc-win32 | FileCheck %s
   3
   4 #pragma OPENCL EXTENSION cl_khr_fp16 : enable
   5
   6
   7 half test()
   8 {
   9    half x = 0.1f;
  10    x+=2.0f;
  11    x-=2.0f;
  12    half y = x + x;
  13    half z = y * 1.0f;
  14    return z;
  15 // CHECK: half 0xH3260
  16 }
  17
  18 // CHECK-LABEL: @test_inc(half noundef %x)
  19 // CHECK: [[INC:%.*]] = fadd half %x, 0xH3C00
  20 // CHECK: ret half [[INC]]
  21 half test_inc(half x)
  22 {
  23   return ++x;
  24 }
  25
  26 __attribute__((overloadable)) int min(int, int);
  27 __attribute__((overloadable)) half min(half, half);
  28 __attribute__((overloadable)) float min(float, float);
  29
  30 __kernel void foo( __global half* buf, __global float* buf2 )
  31 {
  32     buf[0] = min( buf[0], 1.5h );
  33 // CHECK: half noundef 0xH3E00
  34     buf[0] = min( buf2[0], 1.5f );
  35 // CHECK: float noundef 1.500000e+00
  36
  37     const half one = 1.6666;
  38     buf[1] = min( buf[1], one );
  39 // CHECK: half noundef 0xH3EAB
  40 }
  41