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| author | marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-01-19 15:20:16 +0000 |
|---|---|---|
| committer | marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-01-19 15:20:16 +0000 |
| commit | 85fbea9709061ce97395dec59cddefcc62e787a9 (patch) | |
| tree | 606d4253fc1a5473eb60955880ac752e49f992bb /gcc/doc/extend.texi | |
| parent | c16b7ed55398d2ea55d9ab35519f20cc053b9d0a (diff) | |
| download | gcc-85fbea9709061ce97395dec59cddefcc62e787a9.tar.gz | |
IPA ICF: add no_icf attribute.
* c-common.c (handle_noicf_attribute): New function.
* doc/extend.texi (no_icf): Add new attribute description.
* ipa-icf.c (sem_item_optimizer::merge_classes): Handle cases
where the pass attempts to merge a function with no_icf attribute.
* gcc.dg/ipa/ipa-icf-33.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@219848 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index bf6d7102147..ba921e914bd 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -2195,6 +2195,7 @@ attribute specification inside double parentheses. The following attributes are currently defined for functions on all targets: @code{aligned}, @code{alloc_size}, @code{alloc_align}, @code{assume_aligned}, @code{noreturn}, @code{returns_twice}, @code{noinline}, @code{noclone}, +@code{no_icf}, @code{always_inline}, @code{flatten}, @code{pure}, @code{const}, @code{nothrow}, @code{sentinel}, @code{format}, @code{format_arg}, @code{no_instrument_function}, @code{no_split_stack}, @@ -3475,6 +3476,11 @@ cloning---a mechanism that produces specialized copies of functions and which is (currently) performed by interprocedural constant propagation. +@item no_icf +@cindex @code{no_icf} function attribute +This function attribute prevents a functions from being merged with another +semantically equivalent function. + @item nonnull (@var{arg-index}, @dots{}) @cindex @code{nonnull} function attribute The @code{nonnull} attribute specifies that some function parameters should |