diff options
| author | Jan Hubicka <jh@suse.cz> | 2021-12-13 17:29:26 +0100 |
|---|---|---|
| committer | Jan Hubicka <jh@suse.cz> | 2021-12-13 17:30:13 +0100 |
| commit | 16c848090f237c2398930b8c0ef75acebf4fa44d (patch) | |
| tree | a4f3291b1af698d22a2ad009f2b08ffab81d3950 /gcc/doc | |
| parent | 5954b4d415f6424f1232c6b22a772ce184773f54 (diff) | |
| download | gcc-16c848090f237c2398930b8c0ef75acebf4fa44d.zip gcc-16c848090f237c2398930b8c0ef75acebf4fa44d.tar.gz gcc-16c848090f237c2398930b8c0ef75acebf4fa44d.tar.bz2 | |
Add -fipa-strict-aliasing
gcc/ChangeLog:
2021-12-13 Jan Hubicka <hubicka@ucw.cz>
* common.opt: Add -fipa-strict-aliasing.
* doc/invoke.texi: Document -fipa-strict-aliasing.
* ipa-modref.c (modref_access_analysis::record_access): Honor
-fipa-strict-aliasing.
(modref_access_analysis::record_access_lto): Likewise.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 221c7c3..80c36b9 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -570,7 +570,7 @@ Objective-C and Objective-C++ Dialects}. -fsingle-precision-constant -fsplit-ivs-in-unroller -fsplit-loops@gol -fsplit-paths @gol -fsplit-wide-types -fsplit-wide-types-early -fssa-backprop -fssa-phiopt @gol --fstdarg-opt -fstore-merging -fstrict-aliasing @gol +-fstdarg-opt -fstore-merging -fstrict-aliasing -fipa-strict-aliasing @gol -fthread-jumps -ftracer -ftree-bit-ccp @gol -ftree-builtin-call-dce -ftree-ccp -ftree-ch @gol -ftree-coalesce-vars -ftree-copy-prop -ftree-dce -ftree-dominator-opts @gol @@ -12423,6 +12423,16 @@ int f() @{ The @option{-fstrict-aliasing} option is enabled at levels @option{-O2}, @option{-O3}, @option{-Os}. +@item -fipa-strict-aliasing +@opindex fipa-strict-aliasing +Constrols whether rules of @option{-fstrict-aliasing} are applied across +function boundaries. Note that if multiple functions gets inlined into a +signle function the memory accesses are no longer considred to be crossing a +function bounday. + +The @option{-fipa-strict-aliasing} option is enabled by default and is +effective only in combination with @option{-fstrict-aliasing}. + @item -falign-functions @itemx -falign-functions=@var{n} @itemx -falign-functions=@var{n}:@var{m} |