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| author | Martin Liska <mliska@suse.cz> | 2020-01-07 10:18:46 +0100 |
|---|---|---|
| committer | Martin Liska <marxin@gcc.gnu.org> | 2020-01-07 09:18:46 +0000 |
| commit | fa13d9ebdc17e3ffb8f22fb55b19562f68a20fff (patch) | |
| tree | a56d367cf8d82c293219f0c6f4d8c5aec6d96f63 /gcc | |
| parent | a924bffba921d568fbd65210857e1b5031776bb8 (diff) | |
| download | gcc-fa13d9ebdc17e3ffb8f22fb55b19562f68a20fff.zip gcc-fa13d9ebdc17e3ffb8f22fb55b19562f68a20fff.tar.gz gcc-fa13d9ebdc17e3ffb8f22fb55b19562f68a20fff.tar.bz2 | |
Document cloning for the target_clone attribute.
2020-01-07 Martin Liska <mliska@suse.cz>
PR ipa/83411
* doc/extend.texi: Explain cloning for target_clone
attribute.
From-SVN: r279948
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/doc/extend.texi | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d4c3731..fa5101d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2020-01-07 Martin Liska <mliska@suse.cz> + PR ipa/83411 + * doc/extend.texi: Explain cloning for target_clone + attribute. + +2020-01-07 Martin Liska <mliska@suse.cz> + PR tree-optimization/92860 * common.opt: Make in Optimization option as it is affected by -O0, which is an Optimization diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 05ec62c..ec99c38 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -3768,6 +3768,12 @@ the @code{ifunc} attribute above) that dynamically selects a clone suitable for current architecture. The resolver is created only if there is a usage of a function with @code{target_clones} attribute. +Note that any subsequent call of a function without @code{target_clone} +from a @code{target_clone} caller will not lead to copying +(target clone) of the called function. +If you want to enforce such behaviour, +we recommend declaring the calling function with the @code{flatten} attribute? + @item unused @cindex @code{unused} function attribute This attribute, attached to a function, means that the function is meant |