[NDS32] Basic support for -mcpu= and --with-cpu= options.

gcc/
	* config.gcc: Add --with-cpu support for nds32 target.
	* config/nds32/nds32-opts.h(nds32_cpu_type): New.
	* config/nds32/nds32.opt: Add -mcpu= option.

From-SVN: r257982

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 724c476141864822123401aca2ff3d5c5a631035..8f1920f1af773dbd67d32b176952e2a19133bbdc 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-02-26  Kito Cheng  <kito.cheng@gmail.com>
+
+       * config.gcc: Add --with-cpu support for nds32 target.
+       * config/nds32/nds32-opts.h(nds32_cpu_type): New.
+       * config/nds32/nds32.opt: Add -mcpu= option.
+
 2018-02-25  Segher Boessenkool  <segher@kernel.crashing.org>
 
        * config/rs6000/rs6000.opt (mvrsave=no, mvrsave=yes, isel=no,

diff --git a/gcc/config.gcc b/gcc/config.gcc
index c52fecf4221145b19dfd0f5fc1dbff1d60d1ca91..7df17669114934d33ac86ea8b393f855f50a37c1 100644 (file)
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4265,7 +4265,7 @@ case "${target}" in
                ;;
 
        nds32*-*-*)
-               supported_defaults="arch nds32_lib"
+               supported_defaults="arch cpu nds32_lib"
 
                # process --with-arch
                case "${with_arch}" in
@@ -4278,6 +4278,19 @@ case "${target}" in
                        ;;
                esac
 
+               case "${with_cpu}" in
+               "")
+                       with_cpu=n9
+                       ;;
+               n9)
+                       # OK
+                       ;;
+               *)
+                       echo "Cannot accept --with-cpu=$with_cpu, available values are: n9" 1>&2
+                       exit 1
+                       ;;
+               esac
+
                # process --with-nds32-lib
                case "${with_nds32_lib}" in
                "")

diff --git a/gcc/config/nds32/nds32-opts.h b/gcc/config/nds32/nds32-opts.h
index 88441f2924e5b246747ac07eddeb007b82b21dbe..77429abeeada2106d52b508f4d98d608c78af7d5 100644 (file)
--- a/gcc/config/nds32/nds32-opts.h
+++ b/gcc/config/nds32/nds32-opts.h
@@ -40,4 +40,10 @@ enum nds32_cmodel_type
   CMODEL_LARGE
 };
 
+/* The various ANDES CPU.  */
+enum nds32_cpu_type
+{
+  CPU_N9
+};
+
 #endif

diff --git a/gcc/config/nds32/nds32.opt b/gcc/config/nds32/nds32.opt
index 4787a69e338a90c2bcf918a5f34700c47646cf73..459759ca188f5aaf3eaca6f0482a3480c09d3b00 100644 (file)
--- a/gcc/config/nds32/nds32.opt
+++ b/gcc/config/nds32/nds32.opt
@@ -119,6 +119,17 @@ Enum(nds32_cmodel_type) String(medium) Value(CMODEL_MEDIUM)
 EnumValue
 Enum(nds32_cmodel_type) String(large) Value(CMODEL_LARGE)
 
+mcpu=
+Target RejectNegative Joined Enum(nds32_cpu_type) Var(nds32_cpu_option) Init(CPU_N9)
+Specify the cpu for pipeline model.
+
+Enum
+Name(nds32_cpu_type) Type(enum nds32_cpu_type)
+Known cpu types (for use with the -mcpu= option):
+
+EnumValue
+Enum(nds32_cpu_type) String(n9) Value(CPU_N9)
+
 mctor-dtor
 Target Report
 Enable constructor/destructor feature.