clang/test/CodeGen/flt_eval_macro.cpp

   1 // RUN: %clang_cc1 -fexperimental-strict-floating-point -DEXCEPT=1 \
   2 // RUN: -fcxx-exceptions -triple x86_64-linux-gnu -emit-llvm -o - %s \
   3 // RUN: | FileCheck -check-prefix=CHECK-SRC %s
   4
   5 // RUN: %clang_cc1 -fexperimental-strict-floating-point \
   6 // RUN: -triple x86_64-linux-gnu -emit-llvm -o - %s -ffp-eval-method=source \
   7 // RUN: | FileCheck -check-prefix=CHECK-SRC %s
   8
   9 // RUN: %clang_cc1 -fexperimental-strict-floating-point \
  10 // RUN: -triple x86_64-linux-gnu -emit-llvm -o - %s -ffp-eval-method=double \
  11 // RUN: | FileCheck -check-prefixes=CHECK-DBL %s
  12
  13 // RUN: %clang_cc1 -fexperimental-strict-floating-point \
  14 // RUN: -triple x86_64-linux-gnu -emit-llvm -o - %s -ffp-eval-method=extended \
  15 // RUN: | FileCheck -check-prefixes=CHECK-EXT-FLT %s
  16
  17 // RUN: %clang_cc1 -triple powerpc-unknown-aix -emit-llvm -o - %s \
  18 // RUN: | FileCheck %s -check-prefix=CHECK-DBL-PPC
  19
  20 // RUN: %clang_cc1 -fexperimental-strict-floating-point -triple i386-linux-gnu \
  21 // RUN: -emit-llvm -o - %s -ffp-eval-method=extended -mlong-double-80 \
  22 // RUN: | FileCheck %s -check-prefix=CHECK-EXT-FLT
  23
  24 int getFEM() {
  25   // LABEL: define {{.*}}getFEM{{.*}}
  26   return __FLT_EVAL_METHOD__;
  27   // CHECK-SRC: ret {{.*}} 0
  28   // CHECK-DBL: ret {{.*}} 1
  29   // CHECK-DBL-PPC: ret {{.*}} 1
  30   // CHECK-EXT-FLT: ret {{.*}} 2
  31 }
  32
  33 float func() {
  34   // LABEL: define {{.*}}@_Z4func{{.*}}
  35   float X = 100.0f;
  36   float Y = -45.3f;
  37   float Z = 393.78f;
  38   float temp;
  39 #if __FLT_EVAL_METHOD__ == 0
  40   temp = X + Y + Z;
  41 #elif __FLT_EVAL_METHOD__ == 1
  42   temp = X * Y * Z;
  43 #elif __FLT_EVAL_METHOD__ == 2
  44   temp = X * Y - Z;
  45 #endif
  46   // CHECK-SRC: load float, ptr
  47   // CHECK-SRC: load float, ptr
  48   // CHECK-SRC: fadd float
  49   // CHECK-SRC: load float, ptr
  50   // CHECK-SRC: fadd float
  51
  52   // CHECK-DBL: load float, ptr
  53   // CHECK-DBL: fpext float
  54   // CHECK-DBL: load float, ptr
  55   // CHECK-DBL: fpext float
  56   // CHECK-DBL: fmul double
  57   // CHECK-DBL: load float, ptr
  58   // CHECK-DBL: fpext float
  59   // CHECK-DBL: fmul double
  60   // CHECK-DBL: fptrunc double
  61
  62   // CHECK-EXT-FLT: load float, ptr
  63   // CHECK-EXT-FLT: fpext float
  64   // CHECK-EXT-FLT: load float, ptr
  65   // CHECK-EXT-FLT: fpext float
  66   // CHECK-EXT-FLT: fmul x86_fp80
  67   // CHECK-EXT-FLT: load float, ptr
  68   // CHECK-EXT-FLT: fpext float
  69   // CHECK-EXT-FLT: fsub x86_fp80
  70   // CHECK-EXT-FLT: fptrunc x86_fp80
  71
  72   // CHECK-DBL-PPC: load float, ptr
  73   // CHECK-DBL-PPC: load float, ptr
  74   // CHECK-DBL-PPC: fmul float
  75   // CHECK-DBL-PPC: load float, ptr
  76   // CHECK-DBL-PPC: fmul float
  77
  78   return temp;
  79 }