[AArch64] Add support for -mcpu=cortex-a72

2015-02-04  Matthew Wahab  <matthew.wahab@arm.com>

  gcc/
    * config/aarch64/aarch64-cores.def: Add cortex-a72 and
    cortex-a72.cortex-a53.
    * config/aarch64/aarch64-tune.md: Regenerate.
    * doc/invoke.texi (AArch64 Options/-mtune): Add "cortex-a72".

From-SVN: r220413

gcc/ChangeLog

+2015-02-04  Matthew Wahab  <matthew.wahab@arm.com>
+
+	* config/aarch64/aarch64-cores.def: Add cortex-a72 and
+	cortex-a72.cortex-a53.
+	* config/aarch64/aarch64-tune.md: Regenerate.
+	* doc/invoke.texi (AArch64 Options/-mtune): Add "cortex-a72".
+
 2015-02-04  Nick Clifton  <nickc@redhat.com>
 
 	* config/rl78/rl78.c (rl78_note_reg_set): Note the use of REGs

gcc/config/aarch64/aarch64-cores.def

@@ -36,9 +36,11 @@
 
 AARCH64_CORE("cortex-a53",  cortexa53, cortexa53, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa53)
 AARCH64_CORE("cortex-a57",  cortexa57, cortexa57, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57)
+AARCH64_CORE("cortex-a72",  cortexa72, cortexa57, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57)
 AARCH64_CORE("thunderx",    thunderx,  thunderx, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC | AARCH64_FL_CRYPTO, thunderx)
 AARCH64_CORE("xgene1",      xgene1,    xgene1,    8,  AARCH64_FL_FOR_ARCH8, xgene1)
 
 /* V8 big.LITTLE implementations.  */
 
 AARCH64_CORE("cortex-a57.cortex-a53",  cortexa57cortexa53, cortexa53, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57)
+AARCH64_CORE("cortex-a72.cortex-a53",  cortexa72cortexa53, cortexa53, 8,  AARCH64_FL_FOR_ARCH8 | AARCH64_FL_CRC, cortexa57)

gcc/config/aarch64/aarch64-tune.md

 ;; -*- buffer-read-only: t -*-
 ;; Generated automatically by gentune.sh from aarch64-cores.def
 (define_attr "tune"
-	"cortexa53,cortexa57,thunderx,xgene1,cortexa57cortexa53"
+	"cortexa53,cortexa57,cortexa72,thunderx,xgene1,cortexa57cortexa53,cortexa72cortexa53"
 	(const (symbol_ref "((enum attr_tune) aarch64_tune)")))

gcc/doc/invoke.texi

@@ -12098,12 +12098,12 @@ architecture.
 @opindex mtune
 Specify the name of the target processor for which GCC should tune the
 performance of the code.  Permissible values for this option are:
-@samp{generic}, @samp{cortex-a53}, @samp{cortex-a57}, @samp{thunderx},
-@samp{xgene1}.
+@samp{generic}, @samp{cortex-a53}, @samp{cortex-a57},
+@samp{cortex-a72}, @samp{thunderx}, @samp{xgene1}.
 
 Additionally, this option can specify that GCC should tune the performance
-of the code for a big.LITTLE system.  The only permissible value is
-@samp{cortex-a57.cortex-a53}.
+of the code for a big.LITTLE system.  Permissible values for this
+option are: @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53}.
 
 Where none of @option{-mtune=}, @option{-mcpu=} or @option{-march=}
 are specified, the code is tuned to perform well across a range