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Diffstat (limited to 'gcc/testsuite/g++.dg/opt/nrv5.C')
-rw-r--r-- | gcc/testsuite/g++.dg/opt/nrv5.C | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/nrv5.C b/gcc/testsuite/g++.dg/opt/nrv5.C new file mode 100644 index 000000000..7c3c0591f --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/nrv5.C @@ -0,0 +1,57 @@ +// PR c++/7279 +// Test for the named return value optimization with inlining. +// Contributed by Jakub Jelinek <jakub@redhat.com>. +// { dg-do run } +// { dg-options -O2 } + +enum E { E0, E1, E2, E3 }; + +struct S +{ + E s0 : 2; + bool s1 : 1, s2 : 1, s3 : 1, s4 : 1, s5 : 1, s6 : 1; + S (); + void foo (E x); +}; + +S::S() : s1 (true), s2 (false), s0 (E1), s3 (true), s4 (false), + s5 (true), s6 (false) {} +void S::foo (E x) { this->s0 = x; } + +inline S foo () +{ + S s; + s.foo (E0); + return s; +} + +inline S bar () +{ + S s; + s.foo (E2); + return s; +} + +void check (S &s, bool isfoo); + +void test (bool isfoo) +{ + S a = isfoo ? foo () : bar (); + check (a, isfoo); +} + +extern "C" void abort (); + +void check (S &s, bool isfoo) +{ + if (! s.s1 || s.s2 || ! s.s3 || s.s4 || ! s.s5 || s.s6) + abort (); + if (s.s0 != (isfoo ? E0 : E2)) + abort (); +} + +int main () +{ + test (true); + test (false); +} |