clang/test/CodeGen/rounding-math.c

   1 // RUN: %clang_cc1 -fexperimental-strict-floating-point -emit-llvm -ffp-exception-behavior=strict -Wno-unknown-pragmas %s -o - | FileCheck %s
   2 // RUN: %clang_cc1 -fexperimental-strict-floating-point -emit-llvm -frounding-math -Wno-unknown-pragmas %s -o - | FileCheck %s
   3
   4 float PR47807 = -8.6563630030e-03;
   5
   6 // nextUp(1.F) == 0x1.000002p0F
   7
   8 struct S {
   9   float f;
  10 };
  11
  12 static struct S var_01 = {0x1.000001p0};
  13 struct S *func_01(void) {
  14   return &var_01;
  15 }
  16
  17 struct S var_02 = {0x1.000001p0};
  18
  19 struct S *func_03(void) {
  20   static struct S var_03 = {0x1.000001p0};
  21   return &var_03;
  22 }
  23
  24 // CHECK: @var_01 = {{.*}} %struct.S { float 1.000000e+00 }
  25 // CHECK: @var_02 = {{.*}} %struct.S { float 1.000000e+00 }
  26 // CHECK: @func_03.var_03 = {{.*}} %struct.S { float 1.000000e+00 }
  27
  28 #pragma STDC FENV_ROUND FE_UPWARD
  29
  30 static struct S var_04 = {0x1.000001p0};
  31 struct S *func_04(void) {
  32   return &var_04;
  33 }
  34
  35 struct S var_05 = {0x1.000001p0};
  36
  37 struct S *func_06(void) {
  38   static struct S var_06 = {0x1.000001p0};
  39   return &var_06;
  40 }
  41
  42 // CHECK: @var_04 = {{.*}} %struct.S { float 0x3FF0000020000000 }
  43 // CHECK: @var_05 = {{.*}} %struct.S { float 0x3FF0000020000000 }
  44 // CHECK: @func_06.var_06 = {{.*}} %struct.S { float 0x3FF0000020000000 }
  45