Add support for ARM Cortex-M23 processor

2016-11-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm-arches.def (armv8-m.base): Set Cortex-M23 as
    representative core for this architecture.
    * config/arm/arm-cores.def (cortex-m23): Define new processor.
    * config/arm/arm-tables.opt: Regenerate.
    * config/arm/arm-tune.md: Likewise.
    * config/arm/arm.c (arm_v6m_tune): Add Cortex-M23 to the list of cores
    this tuning parameters apply to in the comment.
    * config/arm/bpabi.h (BE8_LINK_SPEC): Add Cortex-M23 to the list of
    valid -mcpu options.
    * doc/invoke.texi (ARM Options): Document new Cortex-M23 processor.

From-SVN: r241848

8 files changed, 28 insertions, 9 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 11518b77eaf..adc4d1761f4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,16 @@
+2016-11-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	* config/arm/arm-arches.def (armv8-m.base): Set Cortex-M23 as
+	representative core for this architecture.
+	* config/arm/arm-cores.def (cortex-m23): Define new processor.
+	* config/arm/arm-tables.opt: Regenerate.
+	* config/arm/arm-tune.md: Likewise.
+	* config/arm/arm.c (arm_v6m_tune): Add Cortex-M23 to the list of cores
+	this tuning parameters apply to in the comment.
+	* config/arm/bpabi.h (BE8_LINK_SPEC): Add Cortex-M23 to the list of
+	valid -mcpu options.
+	* doc/invoke.texi (ARM Options): Document new Cortex-M23 processor.
+
 2016-11-04  Bin Cheng  <bin.cheng@arm.com>
 
 	* fold-const.c (fold_cond_expr_with_comparison): Remove call
diff --git a/gcc/config/arm/arm-arches.def b/gcc/config/arm/arm-arches.def
index 4b196a7d118..9293429b3f9 100644
--- a/gcc/config/arm/arm-arches.def
+++ b/gcc/config/arm/arm-arches.def
@@ -69,7 +69,7 @@ ARM_ARCH ("armv8.2-a", cortexa53,  8A,
 ARM_ARCH ("armv8.2-a+fp16", cortexa53,  8A,
 	  ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A,
 			 FL2_FOR_ARCH8_2A | FL2_FP16INST))
-ARM_ARCH("armv8-m.base", cortexm0, 8M_BASE,
+ARM_ARCH("armv8-m.base", cortexm23, 8M_BASE,
 	 ARM_FSET_MAKE_CPU1 (			      FL_FOR_ARCH8M_BASE))
 ARM_ARCH("armv8-m.main", cortexm7, 8M_MAIN,
 	 ARM_FSET_MAKE_CPU1(FL_CO_PROC |	      FL_FOR_ARCH8M_MAIN))
diff --git a/gcc/config/arm/arm-cores.def b/gcc/config/arm/arm-cores.def
index 2072e1e6f8d..940b5de82f0 100644
--- a/gcc/config/arm/arm-cores.def
+++ b/gcc/config/arm/arm-cores.def
@@ -166,6 +166,7 @@ ARM_CORE("cortex-a15.cortex-a7", cortexa15cortexa7, cortexa7,	7A,	ARM_FSET_MAKE_
 ARM_CORE("cortex-a17.cortex-a7", cortexa17cortexa7, cortexa7,	7A,	ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_THUMB_DIV | FL_ARM_DIV | FL_FOR_ARCH7A), cortex_a12)
 
 /* V8 Architecture Processors */
+ARM_CORE("cortex-m23",	cortexm23, cortexm23,	8M_BASE, ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_FOR_ARCH8M_BASE), v6m)
 ARM_CORE("cortex-a32",	cortexa32, cortexa53,	8A,	ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_CRC32 | FL_FOR_ARCH8A), cortex_a35)
 ARM_CORE("cortex-a35",	cortexa35, cortexa53,	8A,	ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_CRC32 | FL_FOR_ARCH8A), cortex_a35)
 ARM_CORE("cortex-a53",	cortexa53, cortexa53,	8A,	ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_CRC32 | FL_FOR_ARCH8A), cortex_a53)
diff --git a/gcc/config/arm/arm-tables.opt b/gcc/config/arm/arm-tables.opt
index ee9e3bb7ec5..de712924afd 100644
--- a/gcc/config/arm/arm-tables.opt
+++ b/gcc/config/arm/arm-tables.opt
@@ -307,6 +307,9 @@ EnumValue
 Enum(processor_type) String(cortex-a17.cortex-a7) Value(cortexa17cortexa7)
 
 EnumValue
+Enum(processor_type) String(cortex-m23) Value(cortexm23)
+
+EnumValue
 Enum(processor_type) String(cortex-a32) Value(cortexa32)
 
 EnumValue
diff --git a/gcc/config/arm/arm-tune.md b/gcc/config/arm/arm-tune.md
index 594ce9d1734..46c2c9258bc 100644
--- a/gcc/config/arm/arm-tune.md
+++ b/gcc/config/arm/arm-tune.md
@@ -32,9 +32,9 @@
 	cortexr4f,cortexr5,cortexr7,
 	cortexr8,cortexm7,cortexm4,
 	cortexm3,marvell_pj4,cortexa15cortexa7,
-	cortexa17cortexa7,cortexa32,cortexa35,
-	cortexa53,cortexa57,cortexa72,
-	cortexa73,exynosm1,qdf24xx,
-	xgene1,cortexa57cortexa53,cortexa72cortexa53,
-	cortexa73cortexa35,cortexa73cortexa53"
+	cortexa17cortexa7,cortexm23,cortexa32,
+	cortexa35,cortexa53,cortexa57,
+	cortexa72,cortexa73,exynosm1,
+	qdf24xx,xgene1,cortexa57cortexa53,
+	cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53"
 	(const (symbol_ref "((enum attr_tune) arm_tune)")))
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 6dc2d2d6577..1781de02627 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -2248,7 +2248,8 @@ const struct tune_params arm_cortex_m7_tune =
 };
 
 /* The arm_v6m_tune is duplicated from arm_cortex_tune, rather than
-   arm_v6t2_tune. It is used for cortex-m0, cortex-m1 and cortex-m0plus.  */
+   arm_v6t2_tune.  It is used for cortex-m0, cortex-m1, cortex-m0plus and
+   cortex-m23.  */
 const struct tune_params arm_v6m_tune =
 {
   arm_9e_rtx_costs,
diff --git a/gcc/config/arm/bpabi.h b/gcc/config/arm/bpabi.h
index 0da98fb711b..302302f0d2d 100644
--- a/gcc/config/arm/bpabi.h
+++ b/gcc/config/arm/bpabi.h
@@ -95,7 +95,7 @@
    |march=armv8.1-a+crc					\
    |march=armv8.2-a					\
    |march=armv8.2-a+fp16				\
-   |march=armv8-m.base					\
+   |march=armv8-m.base|mcpu=cortex-m23			\
    |march=armv8-m.main					\
    |march=armv8-m.main+dsp				\
    :%{!r:--be8}}}"
@@ -134,7 +134,7 @@
    |march=armv8.1-a+crc					\
    |march=armv8.2-a					\
    |march=armv8.2-a+fp16				\
-   |march=armv8-m.base					\
+   |march=armv8-m.base|mcpu=cortex-m23			\
    |march=armv8-m.main					\
    |march=armv8-m.main+dsp				\
    :%{!r:--be8}}}"
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index ad9304fdeff..caa416f114b 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -14925,6 +14925,7 @@ Permissible names are: @samp{arm2}, @samp{arm250},
 @samp{cortex-a32}, @samp{cortex-a35}, @samp{cortex-a53}, @samp{cortex-a57},
 @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-r4},
 @samp{cortex-r4f}, @samp{cortex-r5}, @samp{cortex-r7}, @samp{cortex-r8},
+@samp{cortex-m23},
 @samp{cortex-m7},
 @samp{cortex-m4},
 @samp{cortex-m3},