[ARM] Add support for ARM Cortex-R52 processor

2017-07-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm-cpus.in (cortex-r52): Add new entry.
    (armv8-r): Set ARM Cortex-R52 as default CPU.
    * config/arm/arm-tables.opt: Regenerate.
    * config/arm/arm-tune.md: Regenerate.
    * config/arm/driver-arm.c (arm_cpu_table): Add entry for ARM
    Cortex-R52.
    * doc/invoke.texi: Mention -mtune=cortex-r52 and availability of fp.dp
    extension for -mcpu=cortex-r52.

From-SVN: r250205

gcc/ChangeLog

 2017-07-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>
 
+	* config/arm/arm-cpus.in (cortex-r52): Add new entry.
+	(armv8-r): Set ARM Cortex-R52 as default CPU.
+	* config/arm/arm-tables.opt: Regenerate.
+	* config/arm/arm-tune.md: Regenerate.
+	* config/arm/driver-arm.c (arm_cpu_table): Add entry for ARM
+	Cortex-R52.
+	* doc/invoke.texi: Mention -mtune=cortex-r52 and availability of fp.dp
+	extension for -mcpu=cortex-r52.
+
+2017-07-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
 	* config/arm/arm-isa.h (isa_bit_FP_ARMv8): Delete enumerator.
 	(ISA_FP_ARMv8): Define as ISA_FPv5 and ISA_FP_D32.
 	* config/arm/arm-cpus.in (armv8-r): Define fp.sp as enabling FPv5.

gcc/config/arm/arm-cpus.in

@@ -381,7 +381,7 @@ begin arch armv8-m.main
 end arch armv8-m.main
 
 begin arch armv8-r
- tune for cortex-r4
+ tune for cortex-r52
  tune flags CO_PROC
  base 8R
  profile R
@@ -1315,6 +1315,16 @@ begin cpu cortex-m33
  costs v7m
 end cpu cortex-m33
 
+# V8 R-profile implementations.
+begin cpu cortex-r52
+ cname cortexr52
+ tune flags LDSCHED
+ architecture armv8-r+crc+simd
+ fpu neon-fp-armv8
+ option nofp.dp remove FP_DBL ALL_SIMD
+ costs cortex
+end cpu cortex-r52
+
 # FPU entries
 # format:
 # begin fpu <name>

gcc/config/arm/arm-tables.opt

@@ -357,6 +357,9 @@ Enum(processor_type) String(cortex-m23) Value( TARGET_CPU_cortexm23)
 EnumValue
 Enum(processor_type) String(cortex-m33) Value( TARGET_CPU_cortexm33)
 
+EnumValue
+Enum(processor_type) String(cortex-r52) Value( TARGET_CPU_cortexr52)
+
 Enum
 Name(arm_arch) Type(int)
 Known ARM architectures (for use with the -march= option):

gcc/config/arm/arm-tune.md

@@ -57,5 +57,6 @@
 	cortexa73,exynosm1,xgene1,
 	cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,
 	cortexa73cortexa53,cortexa55,cortexa75,
-	cortexa75cortexa55,cortexm23,cortexm33"
+	cortexa75cortexa55,cortexm23,cortexm33,
+	cortexr52"
 	(const (symbol_ref "((enum attr_tune) arm_tune)")))

gcc/config/arm/driver-arm.c

@@ -58,6 +58,7 @@ static struct vendor_cpu arm_cpu_table[] = {
     {"0xc15", "armv7-r", "cortex-r5"},
     {"0xc17", "armv7-r", "cortex-r7"},
     {"0xc18", "armv7-r", "cortex-r8"},
+    {"0xd13", "armv8-r+crc", "cortex-r52"},
     {"0xc20", "armv6-m", "cortex-m0"},
     {"0xc21", "armv6-m", "cortex-m1"},
     {"0xc23", "armv7-m", "cortex-m3"},

gcc/doc/invoke.texi

@@ -15540,7 +15540,7 @@ Permissible names are: @samp{arm2}, @samp{arm250},
 @samp{cortex-a32}, @samp{cortex-a35}, @samp{cortex-a53}, @samp{cortex-a55},
 @samp{cortex-a57}, @samp{cortex-a72}, @samp{cortex-a73}, @samp{cortex-a75},
 @samp{cortex-r4}, @samp{cortex-r4f}, @samp{cortex-r5}, @samp{cortex-r7},
-@samp{cortex-r8},
+@samp{cortex-r8}, @samp{cortex-r52},
 @samp{cortex-m33},
 @samp{cortex-m23},
 @samp{cortex-m7},
@@ -15630,7 +15630,7 @@ Disables the floating-point and SIMD instructions on
 
 @item +nofp.dp
 Disables the double-precision component of the floating-point instructions
-on @samp{cortex-r5} and @samp{cortex-m7}.
+on @samp{cortex-r5}, @samp{cortex-r52} and @samp{cortex-m7}.
 
 @item +nosimd
 Disables the SIMD (but not floating-point) instructions on