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| author | Sandra Loosemore <sandra@codesourcery.com> | 2009-12-17 10:43:23 -0500 |
|---|---|---|
| committer | Sandra Loosemore <sandra@gcc.gnu.org> | 2009-12-17 10:43:23 -0500 |
| commit | a0274eae644ea499d83f4090a915bc8bf2f77c77 (patch) | |
| tree | e7b2e3a57eb0960e93d76050cab84c182a65b484 /gcc/doc/rtl.texi | |
| parent | 0c23e1be874aec1658ae7f95499d289d95530ad6 (diff) | |
| download | gcc-a0274eae644ea499d83f4090a915bc8bf2f77c77.tar.gz | |
rtl.texi (Vector Operations): Clarify vec_select result mode.
2009-12-17 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* doc/rtl.texi (Vector Operations): Clarify vec_select result mode.
From-SVN: r155320
Diffstat (limited to 'gcc/doc/rtl.texi')
| -rw-r--r-- | gcc/doc/rtl.texi | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 4888eb3f1e1..eda42c79eae 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -2614,9 +2614,12 @@ a set bit indicates it is taken from @var{vec1}. @findex vec_select @item (vec_select:@var{m} @var{vec1} @var{selection}) This describes an operation that selects parts of a vector. @var{vec1} is -the source vector, @var{selection} is a @code{parallel} that contains a +the source vector, and @var{selection} is a @code{parallel} that contains a @code{const_int} for each of the subparts of the result vector, giving the -number of the source subpart that should be stored into it. +number of the source subpart that should be stored into it. +The result mode @var{m} is either the submode for a single element of +@var{vec1} (if only one subpart is selected), or another vector mode +with that element submode (if multiple subparts are selected). @findex vec_concat @item (vec_concat:@var{m} @var{vec1} @var{vec2}) |