[PATCH 09/25] Elide repeated RTL elements.

[Jeff Law]

On 9/20/18 4:52 AM, Andrew Stubbs wrote:
> On 19/09/18 17:38, Andrew Stubbs wrote:
>> Here's an updated patch incorporating the RTL front-end changes. I had
>> to change from "repeated 2x" to "repeated x2" because the former is
>> not a valid C token, and apparently that's important.
> 
> Here's a patch with self tests added, for both reading and writing.
> 
> It also fixes a bug when the repeat was the last item in a list.
> 
> OK?
> 
> Andrew
> 
> 180920-elide-repeated-RTL-elements.patch
> 
> Elide repeated RTL elements.
> 
> GCN's 64-lane vectors tend to make RTL dumps very long.  This patch makes them
> far more bearable by eliding long sequences of the same element into "repeated"
> messages.
> 
> This also takes care of reading repeated sequences in the RTL front-end.
> 
> There are self tests for both reading and writing.
> 
> 2018-09-20  Andrew Stubbs  <ams@codesourcery.com>
> 	    Jan Hubicka  <jh@suse.cz>
> 	    Martin Jambor  <mjambor@suse.cz>
> 
> 	gcc/
> 	* print-rtl.c (print_rtx_operand_codes_E_and_V): Print how many times
> 	the same elements are repeated rather than printing all of them.
> 	* read-rtl.c (rtx_reader::read_rtx_operand): Recognize and expand
> 	"repeated" elements.
> 	* read-rtl-function.c (test_loading_repeat): New function.
> 	(read_rtl_function_c_tests): Call test_loading_repeat.
> 	* rtl-tests.c (test_dumping_repeat): New function.
> 	(rtl_tests_c_tests): Call test_dumping_repeat.
> 
> 	gcc/testsuite/
> 	* selftests/repeat.rtl: New file.
OK.  Thanks for fixing the reader and adding selftests.

Jeff