r279489 - in /branches/ibm/pcrel-trunk/gcc: Cha...

Wed Dec 18 05:59:00 GMT 2019

Author: meissner
Date: Wed Dec 18 05:59:34 2019
New Revision: 279489

URL: https://gcc.gnu.org/viewcvs?rev=279489&root=gcc&view=rev
Log:
Make -mpcrel default on Linux 64-bit.

2019-12-17  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/linux64.h (PREFIXED_ADDR_SUPPORTED_BY_OS): Set to
	1 to enable prefixed addressing if -mcpu=future.
	(PCREL_SUPPORTED_BY_OS): Set to 1 to enable PC-relative addressing
	if -mcpu=future.
	* config/rs6000/rs6000-cpus.h (ISA_FUTURE_MASKS_SERVER): Do not
	enable -mprefixed-addr or -mpcrel by default.
	(ADDRESSING_FUTURE_MASKS): New macro.
	(OTHER_FUTURE_MASKS): Use ADDRESSING_FUTURE_MASKS.
	* config/rs6000/rs6000.c (PREFIXED_ADDR_SUPPORTED_BY_OS): Disable
	prefixed addressing unless the target OS tm.h says we should
	enable it.
	(PCREL_SUPPORTED_BY_OS): Disable PC-relative addressing unless the
	target OS tm.h says we should enable it.
	(rs6000_debug_reg_global): Print whether prefixed addressing and
	PC-relative addressing is enabled by default if -mcpu=future.
	(rs6000_option_override_internal): Move setting prefixed
	addressing and PC-relative addressing after the sub-target option
	handling is done.  Only enable prefixed addressing or PC-relative
	address on -mcpu=future system if the target OS says to enable
	it.  Disallow prefixed addressing on 32-bit systems or if the
	target object file is not ELF v2.

Modified:
    branches/ibm/pcrel-trunk/gcc/ChangeLog.meissner
    branches/ibm/pcrel-trunk/gcc/config/rs6000/linux64.h
    branches/ibm/pcrel-trunk/gcc/config/rs6000/rs6000-cpus.def
    branches/ibm/pcrel-trunk/gcc/config/rs6000/rs6000.c