clang/test/CodeGen/attr-mode-enums.c

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
   2
   3 // Test checks that 'mode' attribute is handled correctly with enums, i. e. code
   4 //   1. "typedef enum { A } __attribute__((mode(HI))) T;" is accepted,
   5 //   2. "enum X __attribute__((mode(QI))) var;" forms a complete integer type.
   6
   7 int main(void) {
   8   // CHECK: [[X1:%.+]] = alloca i8
   9   enum { A1, B1 } __attribute__((mode(QI))) x1 = A1;
  10
  11   // CHECK: [[X2:%.+]] = alloca i16
  12   enum { A2, B2 } x2 __attribute__((mode(HI))) = B2;
  13
  14   // CHECK: [[X3:%.+]] = alloca i32
  15   typedef enum { A3, B3 } __attribute__((mode(SI))) T3;
  16   T3 x3 = A3;
  17
  18   // CHECK: [[X4:%.+]] = alloca i64
  19   typedef enum { A4, B4 } T4 __attribute__((mode(DI)));
  20   T4 x4 = B4;
  21
  22   // CHECK: [[X5:%.+]] = alloca i8
  23   typedef enum __attribute__((mode(QI))) { A5, B5 } T5;
  24   T5 x5 = A5;
  25
  26   // CHECK: [[X6:%.+]] = alloca i8
  27   typedef enum X __attribute__((mode(QI))) T6;
  28   T6 x6;
  29
  30   // CHECK: [[X7:%.+]] = alloca i128
  31   enum { A7, B7 } __attribute__((mode(TI))) x7 = A7;
  32
  33   // CHECK: [[X8:%.+]] = alloca i8
  34   enum __attribute__((mode(QI))) { A8, B8 } x8 = B8;
  35
  36   // CHECK: store i8 0, ptr [[X1]]
  37   // CHECK: store i16 1, ptr [[X2]]
  38   // CHECK: store i32 0, ptr [[X3]]
  39   // CHECK: store i64 1, ptr [[X4]]
  40   // CHECK: store i8 0, ptr [[X5]]
  41   // CHECK: store i128 0, ptr [[X7]]
  42   // CHECK: store i8 1, ptr [[X8]]
  43
  44   return x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8;
  45 }