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r275883 - in /branches/ibm/pcrel-trunk/gcc: Cha...
- From: meissner at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Wed, 18 Sep 2019 14:47:57 -0000
- Subject: r275883 - in /branches/ibm/pcrel-trunk/gcc: Cha...
Author: meissner
Date: Wed Sep 18 14:47:57 2019
New Revision: 275883
URL: https://gcc.gnu.org/viewcvs?rev=275883&root=gcc&view=rev
Log:
Use PADDI to load 34-bit DImode constants.
2019-09-18 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/rs6000.c (num_insns_constant_gpr): Add support for
PADDI to load up and/or add 34-bit integer constants.
(rs6000_rtx_costs): Treat constants loaded up with PADDI with the
same cost as normal 16-bit constants.
* config/rs6000/rs6000.md (movdi_internal64): Add support to load
up 34-bit integer constants with PADDI.
(movdi integer constant splitter): Add comment about PADDI.
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