Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/constexpr-inline.C @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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// PR c++/53792 - [C++11] improving compiler-time constexpr evaluation // { dg-do compile { target c++11 } } // { dg-additional-options "-O1 -fdump-tree-optimized" } struct entry { char const* label; int value; }; constexpr bool same (char const *x, char const *y) { return !*x && !*y ? true : /* default */ (*x == *y && same (x + 1, y + 1)); } constexpr int keyToValue (char const *label, entry const *entries) { return !entries->label ? entries->value : same (entries->label, label) ? entries->value : /* default */ keyToValue (label, entries + 1); } constexpr entry foo[] = {{"Foo", 0}, {"Bar", 1}, {"FooBar", 2}, {0, -1}}; int bar () { int result = keyToValue ("Foo", foo); return result; } int baz () { constexpr int result = keyToValue ("Foo", foo); return result; } // Verify that the call to the keyToValue() constexpr function is inlined // regardless of whether or not it's invoked in a constexpr expression. // { dg-final { scan-tree-dump-not "keyToValue" "optimized" } }