Default -mtune=/-march= to iamcu for i[34567]86-*-elfiamcu targets.
OK for trunk?
Thanks.
H.J.
---
* config.gcc (x86_archs): Add iamcu.
(with_cpu): Default to iamcu for i[34567]86-*-elfiamcu.
(with_arch): Likewise.
* doc/invoke.texi: Add iamcu.
---
gcc/config.gcc | 8 +++++++-
gcc/doc/invoke.texi | 3 +++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 2b3af82..f0405fe 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -585,7 +585,7 @@ tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2
LIBC_BIONIC=3 LIBC_MUSL=4"
x86_archs="athlon athlon-4 athlon-fx athlon-mp athlon-tbird \
athlon-xp k6 k6-2 k6-3 geode c3 c3-2 winchip-c6 winchip2 i386 i486 \
i586 i686 pentium pentium-m pentium-mmx pentium2 pentium3 pentium3m \
-pentium4 pentium4m pentiumpro prescott"
+pentium4 pentium4m pentiumpro prescott iamcu"
# 64-bit x86 processors supported by --with-arch=. Each processor
# MUST be separated by exactly one space.
@@ -3278,6 +3278,9 @@ esac
# This block sets nothing except for with_cpu.
if test x$with_cpu = x ; then
case ${target} in
+ i[34567]86-*-elfiamcu)
+ with_cpu=iamcu
+ ;;
i[34567]86-*-*|x86_64-*-*)
with_cpu=$cpu
;;
@@ -3370,6 +3373,9 @@ if test x$with_arch = x ; then
# Default arch is set via TARGET_SUBTARGET32_ISA_DEFAULT
# and TARGET_SUBTARGET64_ISA_DEFAULT in config/i386/darwin.h.
;;
+ i[34567]86-*-elfiamcu)
+ with_arch=iamcu
+ ;;
i[34567]86-*-*)
# --with-fpmath sets the default ISA to SSE2, which is the same
# ISA supported by Pentium 4.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 69ae0c3..b28e5d6 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -22250,6 +22250,9 @@ Intel i486 CPU@. (No scheduling is implemented for
this chip.)
@itemx pentium
Intel Pentium CPU with no MMX support.
+@item iamcu
+Intel MCU, based on Intel Pentium CPU.
+
@item pentium-mmx
Intel Pentium MMX CPU, based on Pentium core with MMX instruction set support.
--
2.4.3
