| // PR c++/53792 - [C++11] improving compiler-time constexpr evaluation |
| // Test case from comment #8. |
| // { dg-do compile { target c++14 } } |
| // { dg-additional-options "-O1 -fdump-tree-optimized" } |
| |
| template <class T> |
| void sink (T); |
| |
| constexpr unsigned foo () |
| { |
| unsigned i = 1; |
| while ((i << 1) > i) |
| i = i << 1; |
| |
| return i; |
| } |
| |
| template <unsigned N> |
| struct S { }; |
| |
| void bar () |
| { |
| sink (foo ()); |
| sink (S<foo ()>()); |
| } |
| |
| // Verify that the call to the foo() constexpr function is inlined |
| // regardless of whether or not it's invoked in a constant expression. |
| // { dg-final { scan-tree-dump-not "= *foo *\\\(" "optimized" } } |
