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| author | Jason Merrill <jason@gcc.gnu.org> | 2002-02-11 10:24:37 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2002-02-11 10:24:37 -0500 |
| commit | d6b2c474747305341ffe3f4c6fdc4f1fee4a47d1 (patch) | |
| tree | 0c4250ecfa42f44e16d721ca34b9da6156e9c10d /gcc | |
| parent | 66df7a985f423ee12a75bd1ae0852ad942b925c3 (diff) | |
| download | gcc-d6b2c474747305341ffe3f4c6fdc4f1fee4a47d1.zip gcc-d6b2c474747305341ffe3f4c6fdc4f1fee4a47d1.tar.gz gcc-d6b2c474747305341ffe3f4c6fdc4f1fee4a47d1.tar.bz2 | |
mention NRVO
From-SVN: r49677
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/NEWS | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/cp/NEWS b/gcc/cp/NEWS index a55b484..869ba05 100644 --- a/gcc/cp/NEWS +++ b/gcc/cp/NEWS @@ -44,6 +44,18 @@ any cleanup for that parameter is performed in the caller, as specified by the ia64 C++ ABI, rather than the called function as before. +* G++ now supports the "named return value optimization": for code like + + A f () { + A a; + ... + return a; + } + + G++ will allocate 'a' in the return value slot, so that the return + becomes a no-op. For this to work, all return statements in the function + must return the same variable. + *** Changes in GCC 3.0: * Support for guiding declarations has been removed. |