Vendor import of clang trunk r154661:

http://llvm.org/svn/llvm-project/cfe/trunk@r154661

1 files changed, 41 insertions, 1 deletions

diff --git a/test/CodeGenCXX/const-init.cpp b/test/CodeGenCXX/const-init.cpp
index 797d137..201ce8f 100644
--- a/test/CodeGenCXX/const-init.cpp
+++ b/test/CodeGenCXX/const-init.cpp
@@ -29,10 +29,50 @@ 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* bitcast ([2 x i32]* @arr to i8*), i64 8) to i32*)
+int &pastEnd = arr[2];