100 lines · cpp
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s2// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -std=c++98 -o - %s | FileCheck %s3// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -std=c++11 -o - %s | FileCheck %s4 5// CHECK: @a = global i32 106int a = 10;7// CHECK: @ar = constant ptr @a8int &ar = a;9 10void f();11// CHECK: @fr = constant ptr @_Z1fv12void (&fr)() = f;13 14struct S { int& a; };15// CHECK: @s = global %struct.S { ptr @a }16S s = { a };17 18// PR558119namespace PR5581 {20class C {21public:22 enum { e0, e1 };23 unsigned f;24};25 26// CHECK: @_ZN6PR55812g0E = global %"class.PR5581::C" { i32 1 }27C g0 = { C::e1 };28}29 30namespace test2 {31 struct A {32#if __cplusplus <= 199711L33 static const double d = 1.0;34 static const float f = d / 2;35#else36 static constexpr double d = 1.0;37 static constexpr float f = d / 2;38#endif39 static int g();40 } a;41 42 // CHECK: @_ZN5test22t0E = global double {{1\.0+e\+0+}}, align 843 // CHECK: @_ZN5test22t1E = global [2 x double] [double {{1\.0+e\+0+}}, double {{5\.0+e-0*}}1], align 1644 // CHECK: @_ZN5test22t2E = global ptr @_ZN5test21A1d45 // CHECK: @_ZN5test22t3E = global {{.*}} @_ZN5test21A1g46 double t0 = A::d;47 double t1[] = { A::d, A::f };48 const double *t2 = &a.d;49 int (*t3)() = &a.g;50}51 52// We don't expect to fold this in the frontend, but make sure it doesn't crash.53// CHECK: @PR9558 = global float 0.000000e+054float PR9558 = reinterpret_cast<const float&>("asd");55 56// An initialized const automatic variable cannot be promoted to a constant57// global if it has a mutable member.58struct MutableMember {59 mutable int n;60};61int writeToMutable() {62 // CHECK-NOT: {{.*}}MM{{.*}} = {{.*}}constant63 const MutableMember MM = { 0 };64 return ++MM.n;65}66 67// Make sure we don't try to fold this in the frontend; the backend can't68// handle it.69// CHECK: @PR11705 = global i128 070__int128_t PR11705 = (__int128_t)&PR11705;71 72// Make sure we don't try to fold this either.73// CHECK: @_ZZ23UnfoldableAddrLabelDiffvE1x = internal global i128 074void UnfoldableAddrLabelDiff() { static __int128_t x = (long)&&a-(long)&&b; a:b:return;}75 76// But make sure we do fold this.77// CHECK: @_ZZ21FoldableAddrLabelDiffvE1x = internal global i64 sub (i64 ptrtoint (ptr blockaddress(@_Z21FoldableAddrLabelDiffv78void FoldableAddrLabelDiff() { static long x = (long)&&a-(long)&&b; a:b:return;}79 80// CHECK: @i = constant ptr @PR955881int &i = reinterpret_cast<int&>(PR9558);82 83int arr[2];84// CHECK: @pastEnd = constant ptr getelementptr (i8, ptr @arr, i64 8)85int &pastEnd = arr[2];86 87// CHECK: @[[WCHAR_STR:.*]] = internal global [2 x i32] [i32 112, i32 0],88// CHECK: @PR51105_a = global ptr @[[WCHAR_STR]],89wchar_t *PR51105_a = (wchar_t[2]){ (L"p") };90// CHECK: @[[CHAR_STR:.*]] = internal global [5 x i8] c"p\00\00\00\00",91// CHECK: @PR51105_b = global ptr @[[CHAR_STR]],92char *PR51105_b = (char [5]){ ("p") };93 94struct X {95 long n : 8;96};97long k;98X x = {(long)&k};99// CHECK: store i8 ptrtoint (ptr @k to i8), ptr @x100