Change -falign-functions=N to
Align the start of functions to the next power-of-two greater than
or equal to N.
Add
If '-falign-labels' is greater than this value, then its value is
used instead.
to -falign-loops=N and -falign-jumps=N.
OK for master?
H.J.
--
PR driver/94381
* doc/invoke.texi: Update -falign-functions, -falign-loops and
-falign-jumps documentation.
---
gcc/doc/invoke.texi | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index c2053a3804f..412750c1fc9 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -10939,9 +10939,9 @@ The @option{-fstrict-aliasing} option is enabled at
levels
@itemx -falign-functions=@var{n}:@var{m}:@var{n2}
@itemx -falign-functions=@var{n}:@var{m}:@var{n2}:@var{m2}
@opindex falign-functions
-Align the start of functions to the next power-of-two greater than
-@var{n}, skipping up to @var{m}-1 bytes. This ensures that at least
-the first @var{m} bytes of the function can be fetched by the CPU
+Align the start of functions to the next power-of-two greater than or
+equal to @var{n}, skipping up to @var{m}-1 bytes. This ensures that at
+least the first @var{m} bytes of the function can be fetched by the CPU
without crossing an @var{n}-byte alignment boundary.
If @var{m} is not specified, it defaults to @var{n}.
@@ -11007,6 +11007,9 @@ Align loops to a power-of-two boundary. If the loops
are executed
many times, this makes up for any execution of the dummy padding
instructions.
+If @option{-falign-labels} is greater than this value, then its value
+is used instead.
+
Parameters of this option are analogous to the @option{-falign-functions}
option.
@option{-fno-align-loops} and @option{-falign-loops=1} are
equivalent and mean that loops are not aligned.
@@ -11026,6 +11029,9 @@ Align branch targets to a power-of-two boundary, for
branch targets
where the targets can only be reached by jumping. In this case,
no dummy operations need be executed.
+If @option{-falign-labels} is greater than this value, then its value
+is used instead.
+
Parameters of this option are analogous to the @option{-falign-functions}
option.
@option{-fno-align-jumps} and @option{-falign-jumps=1} are
equivalent and mean that loops are not aligned.
--
2.25.1
