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[arm] Update default CPUs during configure 

There are a couple of places in config.gcc where the default CPU is
still arm6, but that was removed as a supported CPU earlier this year.
This patch fixes those entries.

The default CPU for configurations that do not explicitly set a
default is now arm7tdmi (so assumes thumb is available).  Given that
StrongArm is on the deprecated list, this is a better default than we
had previously.

For NetBSD the default is StrongArm; this is the only remaining port
that uses the old ABI and really still carries support for non-thumb
based targets.

	PR target/86383
	* config.gcc (arm*-*-netbsdelf*): Default to StrongARM if no CPU
	specified to configure.
	(arm*-*-*): Use ARM7TDMI as the target CPU if no default provided.

From-SVN: r265420
This commit is contained in:
Richard Earnshaw 2018-10-23 10:19:15 +00:00 committed by Richard Earnshaw
parent b1a5c71951
commit 7a43314023
2 changed files with 9 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-10-23 Richard Earnshaw <rearnsha@arm.com>
PR target/86383
* config.gcc (arm*-*-netbsdelf*): Default to StrongARM if no CPU
specified to configure.
(arm*-*-*): Use ARM7TDMI as the target CPU if no default provided.
2018-10-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/87700

4
gcc/config.gcc
View File

@ -1134,7 +1134,7 @@ arm*-*-netbsdelf*)
tm_file="dbxelf.h elfos.h ${nbsd_tm_file} arm/elf.h arm/aout.h ${tm_file} arm/netbsd-elf.h"
extra_options="${extra_options} netbsd.opt netbsd-elf.opt"
tmake_file="${tmake_file} arm/t-arm"
target_cpu_cname="arm6"
target_cpu_cname="strongarm"
;;
arm*-*-linux-*) # ARM GNU/Linux with ELF
tm_file="dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
@ -3987,7 +3987,7 @@ case "${target}" in
TM_MULTILIB_CONFIG="$with_multilib_list"
fi
fi
target_cpu_cname=${target_cpu_cname:-arm6}
target_cpu_cname=${target_cpu_cname:-arm7tdmi}
with_cpu=${with_cpu:-$target_cpu_cname}
;;