From 561913cb134ecbf6eb8ec04252e19a43e466b39f Mon Sep 17 00:00:00 2001
From: Andrew Pinski <pinskia@physics.uc.edu>
Date: Mon, 7 Jul 2003 06:49:00 +0200
Subject: [PATCH] invoke.texi (-falign-functions): Document that when n is zero
then a machine-dependent default is used.
2003-07-07 Andrew Pinski <pinskia@physics.uc.edu>
* doc/invoke.texi (-falign-functions): Document that
when n is zero then a machine-dependent default is used.
(-falign-labels): Document that when n is zero then a
machine-dependent default is used and that -falign-labels =1
is equivalent to -fno-align-labels.
(-falign-loops): Likewise.
(-falign-jumps): Likewise.
From-SVN: r69030
---
gcc/doc/invoke.texi | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 9518e0f54a5d..275c213e8678 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -4129,7 +4129,7 @@ equivalent and mean that functions will not be aligned.
Some assemblers only support this flag when @var{n} is a power of two;
in that case, it is rounded up.
-If @var{n} is not specified, use a machine-dependent default.
+If @var{n} is not specified or is zero, use a machine-dependent default.
Enabled at levels @option{-O2}, @option{-O3}.
@@ -4141,11 +4141,14 @@ Align all branch targets to a power-of-two boundary, skipping up to
make code slower, because it must insert dummy operations for when the
branch target is reached in the usual flow of the code.
+@option{-fno-align-labels} and @option{-falign-labels=1} are
+equivalent and mean that labels will not be aligned.
+
If @option{-falign-loops} or @option{-falign-jumps} are applicable and
are greater than this value, then their values are used instead.
-If @var{n} is not specified, use a machine-dependent default which is
-very likely to be @samp{1}, meaning no alignment.
+If @var{n} is not specified or is zero, use a machine-dependent default
+which is very likely to be @samp{1}, meaning no alignment.
Enabled at levels @option{-O2}, @option{-O3}.
@@ -4157,7 +4160,10 @@ like @option{-falign-functions}. The hope is that the loop will be
executed many times, which will make up for any execution of the dummy
operations.
-If @var{n} is not specified, use a machine-dependent default.
+@option{-fno-align-loops} and @option{-falign-loops=1} are
+equivalent and mean that loops will not be aligned.
+
+If @var{n} is not specified or is zero, use a machine-dependent default.
Enabled at levels @option{-O2}, @option{-O3}.
@@ -4169,7 +4175,10 @@ where the targets can only be reached by jumping, skipping up to @var{n}
bytes like @option{-falign-functions}. In this case, no dummy operations
need be executed.
-If @var{n} is not specified, use a machine-dependent default.
+@option{-fno-align-jumps} and @option{-falign-jumps=1} are
+equivalent and mean that loops will not be aligned.
+
+If @var{n} is not specified or is zero, use a machine-dependent default.
Enabled at levels @option{-O2}, @option{-O3}.
--
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