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