[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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f382b20..3314b50 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 720e6a7..a2e89e2 100644 (file)
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -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}
                ;;