[arm] Make ACLE builtins use arm_* namespace for expanders

The builtins from <arm_acle.h> use fairly general expander names such as
"crc", "mcr" etc.
These run the risk of being reserved by the midend in the future.
Let's namespace them to arm_* as is convention.

	* config/arm/arm-builtins.c (acle_builtin_data): Expand VAR1 to
	CODE_FOR_arm_##.
	* config/arm/arm.md (<crc_variant>): Rename to...
	(arm_<crc_variant>): ... This.
	(<cdp>): Rename to...
	(arm_<cdp>): ... This.
	(<ldc>): Rename to...
	(arm_<ldc>): ... This.
	(<stc>): Rename to...
	(arm_<stc>): ... This.
	(<mcr>): Rename to...
	(arm_<mcr>): ... This.
	(<mrc>): Rename to...
	(arm_<mrc>): ... This.
	(<mcrr>): Rename to...
	(arm_<mcrr>): ... This.
	(<mrrc>): Rename to...
	(arm_<mrrc>): ... This.

From-SVN: r273879

gcc/ChangeLog

+2019-07-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/arm/arm-builtins.c (acle_builtin_data): Expand VAR1 to
+	CODE_FOR_arm_##.
+	* config/arm/arm.md (<crc_variant>): Rename to...
+	(arm_<crc_variant>): ... This.
+	(<cdp>): Rename to...
+	(arm_<cdp>): ... This.
+	(<ldc>): Rename to...
+	(arm_<ldc>): ... This.
+	(<stc>): Rename to...
+	(arm_<stc>): ... This.
+	(<mcr>): Rename to...
+	(arm_<mcr>): ... This.
+	(<mrc>): Rename to...
+	(arm_<mrc>): ... This.
+	(<mcrr>): Rename to...
+	(arm_<mcrr>): ... This.
+	(<mrrc>): Rename to...
+	(arm_<mrrc>): ... This.
+
 2019-07-29  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/91257

gcc/config/arm/arm-builtins.c

@@ -376,7 +376,7 @@ static arm_builtin_datum neon_builtin_data[] =
 #undef CF
 #undef VAR1
 #define VAR1(T, N, A) \
-  {#N, UP (A), CODE_FOR_##N, 0, T##_QUALIFIERS},
+  {#N, UP (A), CODE_FOR_arm_##N, 0, T##_QUALIFIERS},
 
 static arm_builtin_datum acle_builtin_data[] =
 {

gcc/config/arm/arm.md

@@ -12062,7 +12062,7 @@
    (set_attr "predicable" "yes")])
 
 ;; ARMv8 CRC32 instructions.
-(define_insn "<crc_variant>"
+(define_insn "arm_<crc_variant>"
   [(set (match_operand:SI 0 "s_register_operand" "=r")
         (unspec:SI [(match_operand:SI 1 "s_register_operand" "r")
                     (match_operand:<crc_mode> 2 "s_register_operand" "r")]
@@ -12178,7 +12178,7 @@
   DONE;
 })
 
-(define_insn "<cdp>"
+(define_insn "arm_<cdp>"
   [(unspec_volatile [(match_operand:SI 0 "immediate_operand" "n")
 		     (match_operand:SI 1 "immediate_operand" "n")
 		     (match_operand:SI 2 "immediate_operand" "n")
@@ -12224,19 +12224,19 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
-(define_expand "<ldc>"
+(define_expand "arm_<ldc>"
   [(unspec_volatile [(match_operand:SI 0 "immediate_operand")
 		     (match_operand:SI 1 "immediate_operand")
 		     (mem:SI (match_operand:SI 2 "s_register_operand"))] LDCI)]
   "arm_coproc_builtin_available (VUNSPEC_<LDC>)")
 
-(define_expand "<stc>"
+(define_expand "arm_<stc>"
   [(unspec_volatile [(match_operand:SI 0 "immediate_operand")
 		     (match_operand:SI 1 "immediate_operand")
 		     (mem:SI (match_operand:SI 2 "s_register_operand"))] STCI)]
   "arm_coproc_builtin_available (VUNSPEC_<STC>)")
 
-(define_insn "<mcr>"
+(define_insn "arm_<mcr>"
   [(unspec_volatile [(match_operand:SI 0 "immediate_operand" "n")
 		     (match_operand:SI 1 "immediate_operand" "n")
 		     (match_operand:SI 2 "s_register_operand" "r")
@@ -12256,7 +12256,7 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
-(define_insn "<mrc>"
+(define_insn "arm_<mrc>"
   [(set (match_operand:SI 0 "s_register_operand" "=r")
 	(unspec_volatile:SI [(match_operand:SI 1 "immediate_operand" "n")
 			  (match_operand:SI 2 "immediate_operand" "n")
@@ -12275,7 +12275,7 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
-(define_insn "<mcrr>"
+(define_insn "arm_<mcrr>"
   [(unspec_volatile [(match_operand:SI 0 "immediate_operand" "n")
 		     (match_operand:SI 1 "immediate_operand" "n")
 		     (match_operand:DI 2 "s_register_operand" "r")
@@ -12291,7 +12291,7 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
-(define_insn "<mrrc>"
+(define_insn "arm_<mrrc>"
   [(set (match_operand:DI 0 "s_register_operand" "=r")
 	(unspec_volatile:DI [(match_operand:SI 1 "immediate_operand" "n")
 			  (match_operand:SI 2 "immediate_operand" "n")