clang/test/Frontend/fixed_point_to_bool.c

   1 // RUN: %clang_cc1 -ffixed-point -emit-llvm %s -o - | FileCheck %s
   2 // RUN: %clang_cc1 -ffixed-point -emit-llvm %s -o - -fpadding-on-unsigned-fixed-point | FileCheck %s
   3
   4 _Bool global_b = 1.0k;  // @global_b = {{*.}}global i8 1, align 1
   5 _Bool global_b2 = 0.0k; // @global_b2 = {{*.}}global i8 0, align 1
   6
   7 void func(void) {
   8   _Accum a = 0.5k;
   9   unsigned _Accum ua = 0.5uk;
  10   _Bool b;
  11
  12   // CHECK: store i8 1, ptr %b, align 1
  13   // CHECK-NEXT: store i8 0, ptr %b, align 1
  14   // CHECK: store i8 1, ptr %b, align 1
  15   // CHECK-NEXT: store i8 0, ptr %b, align 1
  16   b = 0.5k;
  17   b = 0.0k;
  18   b = 0.5uk;
  19   b = 0.0uk;
  20
  21   // CHECK-NEXT: store i8 1, ptr %b, align 1
  22   // CHECK-NEXT: store i8 0, ptr %b, align 1
  23   // CHECK-NEXT: store i8 1, ptr %b, align 1
  24   // CHECK-NEXT: store i8 0, ptr %b, align 1
  25   b = (_Bool)0.5r;
  26   b = (_Bool)0.0r;
  27   b = (_Bool)0.5ur;
  28   b = (_Bool)0.0ur;
  29
  30   // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = load i32, ptr %a, align 4
  31   // CHECK-NEXT: [[NOTZERO:%[0-9a-z]+]] = icmp ne i32 [[ACCUM]], 0
  32   // CHECK-NEXT: [[FROMBOOL:%[0-9a-z]+]] = zext i1 [[NOTZERO]] to i8
  33   // CHECK-NEXT: store i8 [[FROMBOOL]], ptr %b, align 1
  34   b = a;
  35
  36   // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = load i32, ptr %ua, align 4
  37   // CHECK-NEXT: [[NOTZERO:%[0-9a-z]+]] = icmp ne i32 [[ACCUM]], 0
  38   // CHECK-NEXT: [[FROMBOOL:%[0-9a-z]+]] = zext i1 [[NOTZERO]] to i8
  39   // CHECK-NEXT: store i8 [[FROMBOOL]], ptr %b, align 1
  40   b = ua;
  41
  42   // CHECK-NEXT: [[ACCUM:%[0-9a-z]+]] = load i32, ptr %a, align 4
  43   // CHECK-NEXT: [[NOTZERO:%[0-9a-z]+]] = icmp ne i32 [[ACCUM]], 0
  44   // CHECK-NEXT: br i1 [[NOTZERO]], label %if.then, label %if.end
  45   if (a) {
  46   }
  47
  48   // CHECK:      [[ACCUM:%[0-9a-z]+]] = load i32, ptr %ua, align 4
  49   // CHECK-NEXT: [[NOTZERO:%[0-9a-z]+]] = icmp ne i32 [[ACCUM]], 0
  50   // CHECK-NEXT: br i1 [[NOTZERO]], label %if.then{{[0-9]+}}, label %if.end{{[0-9]+}}
  51   if (ua) {
  52   }
  53 }