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| author | Dorit Nuzman <dorit@il.ibm.com> | 2006-02-28 07:41:47 +0000 |
|---|---|---|
| committer | Dorit Nuzman <dorit@gcc.gnu.org> | 2006-02-28 07:41:47 +0000 |
| commit | 7ffe0f0ddd214d307b1df4051cea3644012e585f (patch) | |
| tree | 5ce2f20993eef122313c960806b7bbfa6ba58aab /gcc | |
| parent | 3fa1b0e5715577539968e554f6cc164a955483a5 (diff) | |
| download | gcc-7ffe0f0ddd214d307b1df4051cea3644012e585f.zip gcc-7ffe0f0ddd214d307b1df4051cea3644012e585f.tar.gz gcc-7ffe0f0ddd214d307b1df4051cea3644012e585f.tar.bz2 | |
re PR tree-optimization/26419 (-ftree-vectorizer-verbose=n documentation is terse)
PR tree-optimization/26419
* doc/invoke.texi (ftree-vectorizer-verbose): Add information on
values of n.
From-SVN: r111516
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 25 |
2 files changed, 28 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1efd3a6..7e43a15 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2006-02-28 Dorit Nuzman <dorit@il.ibm.com> + + PR tree-optimization/26419 + * doc/invoke.texi (ftree-vectorizer-verbose): Add information on + values of n. + 2006-02-27 Zack Weinberg <zackw@panix.com> * doc/md.texi: Fix typo in previous change. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 60aaaf7..1c4f909 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -4203,9 +4203,28 @@ Enable all the available tree dumps with the flags provided in this option. @item -ftree-vectorizer-verbose=@var{n} @opindex ftree-vectorizer-verbose This option controls the amount of debugging output the vectorizer prints. -This information is written to standard error, unless @option{-fdump-tree-all} -or @option{-fdump-tree-vect} is specified, in which case it is output to the -usual dump listing file, @file{.vect}. +This information is written to standard error, unless +@option{-fdump-tree-all} or @option{-fdump-tree-vect} is specified, +in which case it is output to the usual dump listing file, @file{.vect}. +For @var{n}=0 no diagnostic information is reported. +If @var{n}=1 the vectorizer reports each loop that got vectorized, +and the total number of loops that got vectorized. +If @var{n}=2 the vectorizer also reports non-vectorized loops that passed +the first analysis phase (vect_analyze_loop_form) - i.e. countable, +inner-most, single-bb, single-entry/exit loops. This is the same verbosity +level that @option{-fdump-tree-vect-stats} uses. +Higher verbosity levels mean either more information dumped for each +reported loop, or same amount of information reported for more loops: +If @var{n}=3, alignment related information is added to the reports. +If @var{n}=4, data-references related information (e.g. memory dependences, +memory access-patterns) is added to the reports. +If @var{n}=5, the vectorizer reports also non-vectorized inner-most loops +that did not pass the first analysis phase (i.e. may not be countable, or +may have complicated control-flow). +If @var{n}=6, the vectorizer reports also non-vectorized nested loops. +For @var{n}=7, all the information the vectorizer generates during its +analysis and transformation is reported. This is the same verbosity level +that @option{-fdump-tree-vect-details} uses. @item -frandom-seed=@var{string} @opindex frandom-string |