| // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s |
| |
| // CHECK: @a = global i32 10 |
| int a = 10; |
| // CHECK: @ar = constant i32* @a |
| int &ar = a; |
| |
| void f(); |
| // CHECK: @fr = constant void ()* @_Z1fv |
| void (&fr)() = f; |
| |
| struct S { int& a; }; |
| // CHECK: @s = global %struct.S { i32* @a } |
| S s = { a }; |
| |
| // PR5581 |
| namespace PR5581 { |
| class C { |
| public: |
| enum { e0, e1 }; |
| unsigned f; |
| }; |
| |
| // CHECK: @_ZN6PR55812g0E = global %"class.PR5581::C" { i32 1 } |
| C g0 = { C::e1 }; |
| } |
| |
| namespace test2 { |
| struct A { |
| static const double d = 1.0; |
| static const float f = d / 2; |
| static int g(); |
| } a; |
| |
| // CHECK: @_ZN5test22t0E = global double {{1\.0+e\+0+}}, align 8 |
| // CHECK: @_ZN5test22t1E = global [2 x double] [double {{1\.0+e\+0+}}, double {{5\.0+e-0*}}1], align 16 |
| // CHECK: @_ZN5test22t2E = global double* @_ZN5test21A1d |
| // CHECK: @_ZN5test22t3E = global {{.*}} @_ZN5test21A1g |
| double t0 = A::d; |
| double t1[] = { A::d, A::f }; |
| const double *t2 = &a.d; |
| int (*t3)() = &a.g; |
| } |
| |
| // We don't expect to fold this in the frontend, but make sure it doesn't crash. |
| // CHECK: @PR9558 = global float 0.000000e+0 |
| float PR9558 = reinterpret_cast<const float&>("asd"); |
| |
| // An initialized const automatic variable cannot be promoted to a constant |
| // global if it has a mutable member. |
| struct MutableMember { |
| mutable int n; |
| }; |
| int writeToMutable() { |
| // CHECK-NOT: {{.*}}MM{{.*}} = {{.*}}constant |
| const MutableMember MM = { 0 }; |
| return ++MM.n; |
| } |
| |
| // Make sure we don't try to fold this in the frontend; the backend can't |
| // handle it. |
| // CHECK: @PR11705 = global i128 0 |
| __int128_t PR11705 = (__int128_t)&PR11705; |
| |
| // Make sure we don't try to fold this either. |
| // CHECK: @_ZZ23UnfoldableAddrLabelDiffvE1x = internal global i128 0 |
| void UnfoldableAddrLabelDiff() { static __int128_t x = (long)&&a-(long)&&b; a:b:return;} |
| |
| // But make sure we do fold this. |
| // CHECK: @_ZZ21FoldableAddrLabelDiffvE1x = internal global i64 sub (i64 ptrtoint (i8* blockaddress(@_Z21FoldableAddrLabelDiffv |
| void FoldableAddrLabelDiff() { static long x = (long)&&a-(long)&&b; a:b:return;} |
| |
| // CHECK: @i = constant i32* bitcast (float* @PR9558 to i32*) |
| int &i = reinterpret_cast<int&>(PR9558); |
| |
| int arr[2]; |
| // CHECK: @pastEnd = constant i32* bitcast (i8* getelementptr (i8, i8* bitcast ([2 x i32]* @arr to i8*), i64 8) to i32*) |
| int &pastEnd = arr[2]; |
| |
| struct X { |
| long n : 8; |
| }; |
| long k; |
| X x = {(long)&k}; |
| // CHECK: store i8 ptrtoint (i64* @k to i8), i8* getelementptr inbounds (%struct.X, %struct.X* @x, i32 0, i32 0) |