diff options
| author | Daniel Berlin <dberlin@dberlin.org> | 2005-04-06 20:03:15 +0000 |
|---|---|---|
| committer | Daniel Berlin <dberlin@gcc.gnu.org> | 2005-04-06 20:03:15 +0000 |
| commit | 31617ef157295022ea07d3874d0ba457f14bc4bd (patch) | |
| tree | 6a06c9e86888c19907695323e00a5fc66d7d3ed5 /gcc/doc/invoke.texi | |
| parent | 4e9944320fd51bb3b61bff832f01614156f75cb8 (diff) | |
| download | gcc-31617ef157295022ea07d3874d0ba457f14bc4bd.zip gcc-31617ef157295022ea07d3874d0ba457f14bc4bd.tar.gz gcc-31617ef157295022ea07d3874d0ba457f14bc4bd.tar.bz2 | |
params.def (PARAM_SALIAS_MAX_IMPLICIT_FIELDS): New
2005-04-06 Daniel Berlin <dberlin@dberlin.org>
* params.def (PARAM_SALIAS_MAX_IMPLICIT_FIELDS): New
* params.h (SALIAS_MAX_IMPLICIT_FIELDS): New
* doc/invoke.texi: Documnet salias-max-implicit-fields.
* tree-ssa-alias.c (struct used_part): Add implicit_uses and
explicit_uses members.
(get_or_create_used_part_for): Initialize new fields.
(fieldoff_compare): New function.
(create_overlap_variables_for): Count number of fields, use
heuristic to determine whether to create subvars for vars with
only implicit uses.
Sort the field list by offset and avoid creating duplicate SFT's.
From-SVN: r97746
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index b018b27..e36aa3a 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -5445,6 +5445,11 @@ In each case, the @var{value} is an integer. The allowable choices for @var{name} are given in the following table: @table @gcctabopt +@item salias-max-implicit-fields +The maximum number of fields in a variable without direct +structure accesses for which structure aliasing will consider trying +to track each field. The default is 5 + @item sra-max-structure-size The maximum structure size, in bytes, at which the scalar replacement of aggregates (SRA) optimization will perform block copies. The |