ms-intrinsics.c revision 176edba5311f6eff0cad2631449885ddf4fbc9ea 
1// RUN: %clang_cc1 -triple i686--windows -fms-compatibility -Oz -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK -check-prefix CHECK-I386
2// RUN: %clang_cc1 -triple thumbv7--windows -fms-compatibility -Oz -emit-llvm %s -o - | FileCheck %s
3
4void *test_InterlockedExchangePointer(void * volatile *Target, void *Value) {
5  return _InterlockedExchangePointer(Target, Value);
6}
7
8// CHECK: define{{.*}}i8* @test_InterlockedExchangePointer(i8** %Target, i8* %Value){{.*}}{
9// CHECK:   %[[TARGET:[0-9]+]] = bitcast i8** %Target to i32*
10// CHECK:   %[[VALUE:[0-9]+]] = ptrtoint i8* %Value to i32
11// CHECK:   %[[EXCHANGE:[0-9]+]] = atomicrmw xchg i32* %[[TARGET]], i32 %[[VALUE]] seq_cst
12// CHECK:   %[[RESULT:[0-9]+]] = inttoptr i32 %[[EXCHANGE]] to i8*
13// CHECK:   ret i8* %[[RESULT]]
14// CHECK: }
15
16void *test_InterlockedCompareExchangePointer(void * volatile *Destination,
17                                             void *Exchange, void *Comparand) {
18  return _InterlockedCompareExchangePointer(Destination, Exchange, Comparand);
19}
20
21// CHECK: define{{.*}}i8* @test_InterlockedCompareExchangePointer(i8** %Destination, i8* %Exchange, i8* %Comparand){{.*}}{
22// CHECK:   %[[DEST:[0-9]+]] = bitcast i8** %Destination to i32*
23// CHECK:   %[[EXCHANGE:[0-9]+]] = ptrtoint i8* %Exchange to i32
24// CHECK:   %[[COMPARAND:[0-9]+]] = ptrtoint i8* %Comparand to i32
25// CHECK:   %[[XCHG:[0-9]+]] = cmpxchg volatile i32* %[[DEST:[0-9]+]], i32 %[[COMPARAND:[0-9]+]], i32 %[[EXCHANGE:[0-9]+]] seq_cst seq_cst
26// CHECK:   %[[EXTRACT:[0-9]+]] = extractvalue { i32, i1 } %[[XCHG]], 0
27// CHECK:   %[[RESULT:[0-9]+]] = inttoptr i32 %[[EXTRACT]] to i8*
28// CHECK:   ret i8* %[[RESULT:[0-9]+]]
29// CHECK: }
30
31long test_InterlockedExchange(long *Target, long Value) {
32  return _InterlockedExchange(Target, Value);
33}
34
35// CHECK: define{{.*}}i32 @test_InterlockedExchange(i32* %Target, i32 %Value){{.*}}{
36// CHECK:   %[[EXCHANGE:[0-9]+]] = atomicrmw xchg i32* %Target, i32 %Value seq_cst
37// CHECK:   ret i32 %[[EXCHANGE:[0-9]+]]
38// CHECK: }
39
40#if defined(__i386__)
41long test__readfsdword(unsigned long Offset) {
42  return __readfsdword(Offset);
43}
44
45// CHECK-I386: define i32 @test__readfsdword(i32 %Offset){{.*}}{
46// CHECK-I386:   [[PTR:%[0-9]+]] = inttoptr i32 %Offset to i32 addrspace(257)*
47// CHECK-I386:   [[VALUE:%[0-9]+]] = load volatile i32 addrspace(257)* [[PTR]], align 4
48// CHECK-I386:   ret i32 [[VALUE:%[0-9]+]]
49// CHECK-I386: }
50#endif
51
52