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re PR target/85321 (Missing documentation and option misc for ppc64le)

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2018-04-10  Aaron Sawdey  <acsawdey@linux.ibm.com>

	PR target/85321
	* doc/invoke.texi (RS/6000 and PowerPC Options): Document options
	-mblock-compare-inline-limit, -mblock-compare-inline-loop-limit,
	and -mstring-compare-inline-limit.

From-SVN: r259302
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Aaron Sawdey 2018-04-10 22:05:41 +00:00 committed by Aaron Sawdey
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gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-04-10 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/85321
* doc/invoke.texi (RS/6000 and PowerPC Options): Document options
-mblock-compare-inline-limit, -mblock-compare-inline-loop-limit,
and -mstring-compare-inline-limit.
2018-04-10 Segher Boessenkool <segher@kernel.crashing.org>
PR target/85287

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gcc/doc/invoke.texi
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@ -1080,6 +1080,9 @@ See RS/6000 and PowerPC Options.
-maix-struct-return -msvr4-struct-return @gol
-mabi=@var{abi-type} -msecure-plt -mbss-plt @gol
-mblock-move-inline-limit=@var{num} @gol
-mblock-compare-inline-limit=@var{num} @gol
-mblock-compare-inline-loop-limit=@var{num} @gol
-mstring-compare-inline-limit=@var{num} @gol
-misel -mno-isel @gol
-misel=yes -misel=no @gol
-mpaired @gol
@ -24142,6 +24145,31 @@ copies) less than or equal to @var{num} bytes. The minimum value for
@var{num} is 32 bytes on 32-bit targets and 64 bytes on 64-bit
targets. The default value is target-specific.
@item -mblock-compare-inline-limit=@var{num}
@opindex mblock-compare-inline-limit
Generate non-looping inline code for all block compares (such as calls
to @code{memcmp} or structure compares) less than or equal to @var{num}
bytes. If @var{num} is 0, all inline expansion (non-loop and loop) of
block compare is disabled. The default value is target-specific.
@item -mblock-compare-inline-loop-limit=@var{num}
@opindex mblock-compare-inline-loop-limit
Generate an inline expansion using loop code for all block compares that
are less than or equal to @var{num} bytes, but greater than the limit
for non-loop inline block compare expansion. If the block length is not
constant, at most @var{num} bytes will be compared before @code{memcmp}
is called to compare the remainder of the block. The default value is
target-specific.
@item -mstring-compare-inline-limit=@var{num}
@opindex mstring-compare-inline-limit
Generate at most @var{num} pairs of load instructions to compare the
string inline. If the difference or end of string is not found at the
end of the inline compare a call to @code{strcmp} or @code{strncmp} will
take care of the rest of the comparison. The default is 8 pairs of
loads, which will compare 64 bytes on a 64-bit target and 32 bytes on a
32-bit target.
@item -G @var{num}
@opindex G
@cindex smaller data references (PowerPC)