clang/test/CodeGen/ms-barriers-intrinsics.c

   1 // RUN: %clang_cc1 -ffreestanding -fms-extensions -fms-compatibility -fms-compatibility-version=17.00 \
   2 // RUN:         -triple i686--windows -emit-llvm %s -o - \
   3 // RUN:         | FileCheck %s
   4 // RUN: %clang_cc1 -ffreestanding -fms-extensions -fms-compatibility -fms-compatibility-version=17.00 \
   5 // RUN:         -triple x86_64--windows -emit-llvm %s -o - \
   6 // RUN:         | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-X64
   7
   8 // intrin.h needs size_t, but -ffreestanding prevents us from getting it from
   9 // stddef.h.  Work around it with this typedef.
  10 typedef __SIZE_TYPE__ size_t;
  11
  12 #include <intrin.h>
  13
  14 void test_ReadWriteBarrier(void) { _ReadWriteBarrier(); }
  15 // CHECK-LABEL: define dso_local void @test_ReadWriteBarrier
  16 // CHECK:   fence syncscope("singlethread") seq_cst
  17 // CHECK:   ret void
  18 // CHECK: }
  19
  20 void test_ReadBarrier(void) { _ReadBarrier(); }
  21 // CHECK-LABEL: define dso_local void @test_ReadBarrier
  22 // CHECK:   fence syncscope("singlethread") seq_cst
  23 // CHECK:   ret void
  24 // CHECK: }
  25
  26 void test_WriteBarrier(void) { _WriteBarrier(); }
  27 // CHECK-LABEL: define dso_local void @test_WriteBarrier
  28 // CHECK:   fence syncscope("singlethread") seq_cst
  29 // CHECK:   ret void
  30 // CHECK: }
  31
  32 #if defined(__x86_64__)
  33 void test__faststorefence(void) { __faststorefence(); }
  34 // CHECK-X64-LABEL: define dso_local void @test__faststorefence
  35 // CHECK-X64:   fence seq_cst
  36 // CHECK-X64:   ret void
  37 // CHECK-X64: }
  38 #endif
  39