clang/test/CodeGen/X86/x86-bswap.c

   1 // RUN: %clang_cc1 -x c -ffreestanding %s -triple=x86_64-apple-darwin -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
   2 // RUN: %clang_cc1 -x c++ -std=c++11 -ffreestanding %s -triple=x86_64-apple-darwin -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
   3
   4 #include <x86intrin.h>
   5
   6 int test__bswapd(int X) {
   7 // CHECK-LABEL: test__bswapd
   8 // CHECK: call i32 @llvm.bswap.i32
   9   return __bswapd(X);
  10 }
  11
  12 int test_bswap(int X) {
  13 // CHECK-LABEL: test_bswap
  14 // CHECK: call i32 @llvm.bswap.i32
  15   return _bswap(X);
  16 }
  17
  18 long test__bswapq(long long X) {
  19 // CHECK-LABEL: test__bswapq
  20 // CHECK: call i64 @llvm.bswap.i64
  21   return __bswapq(X);
  22 }
  23
  24 long test_bswap64(long long X) {
  25 // CHECK-LABEL: test_bswap64
  26 // CHECK: call i64 @llvm.bswap.i64
  27   return _bswap64(X);
  28 }
  29
  30 // Test constexpr handling.
  31 #if defined(__cplusplus) && (__cplusplus >= 201103L)
  32
  33 char bswapd_0[__bswapd(0x00000000) == 0x00000000 ? 1 : -1];
  34 char bswapd_1[__bswapd(0x01020304) == 0x04030201 ? 1 : -1];
  35
  36 char bswap_0[_bswap(0x00000000) == 0x00000000 ? 1 : -1];
  37 char bswap_1[_bswap(0x10203040) == 0x40302010 ? 1 : -1];
  38
  39 char bswapq_0[__bswapq(0x0000000000000000ULL) == 0x0000000000000000 ? 1 : -1];
  40 char bswapq_1[__bswapq(0x0102030405060708ULL) == 0x0807060504030201 ? 1 : -1];
  41
  42 char bswap64_0[_bswap64(0x0000000000000000ULL) == 0x0000000000000000 ? 1 : -1];
  43 char bswap64_1[_bswap64(0x1020304050607080ULL) == 0x8070605040302010 ? 1 : -1];
  44
  45 #endif