r275628 - in /branches/ibm/pcrel-trunk/gcc: Cha...

Wed Sep 11 04:40:00 GMT 2019

Author: meissner
Date: Wed Sep 11 04:40:10 2019
New Revision: 275628

URL: https://gcc.gnu.org/viewcvs?rev=275628&root=gcc&view=rev
Log:
Add support to load up 34-bit DImode constants with PADDI.

2019-09-11  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/rs6000.c (num_insns_constant_gpr): Use
	SIGNED_16BIT_OFFSET_P macro.  Add support for using the PADDI
	instruction.
	(rs6000_rtx_costs): Add support for using PADDI for large
	constants.
	* config/rs6000/rs6000.md (movdi_internal64): Add alternative to
	load up 34-bit constants with PADDI.
	(movdi CONST_INT_P splitter): Update comment.

Modified:
    branches/ibm/pcrel-trunk/gcc/ChangeLog.meissner
    branches/ibm/pcrel-trunk/gcc/config/rs6000/rs6000.c
    branches/ibm/pcrel-trunk/gcc/config/rs6000/rs6000.md