[AArch64] Add a "compnum" feature

This patch adds a named "compnum" feature for the ARMv8.3-A FCADD
and FCMLA extensions.

include/
	* opcode/aarch64.h (AARCH64_FEATURE_COMPNUM): New macro.
	(AARCH64_ARCH_V8_3): Include AARCH64_FEATURE_COMPNUM.

opcodes/
	* aarch64-tbl.h (aarch64_feature_simd_v8_3): Replace with...
	(aarch64_feature_compnum): ...this.
	(SIMD_V8_3): Replace with...
	(COMPNUM): ...this.
	(CNUM_INSN): New macro.
	(aarch64_opcode_table): Use it for the complex number instructions.

gas/
	* doc/c-aarch64.texi: Add a "compnum" entry.
	* config/tc-aarch64.c (aarch64_features): Likewise,
	* testsuite/gas/aarch64/advsimd-compnum.s: New test.
	* testsuite/gas/aarch64/advsimd-compnum.d: Likewise.

gas/ChangeLog

@@ -1,3 +1,10 @@
+2017-02-24  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* doc/c-aarch64.texi: Add a "compnum" entry.
+	* config/tc-aarch64.c (aarch64_features): Likewise,
+	* testsuite/gas/aarch64/advsimd-compnum.s: New test.
+	* testsuite/gas/aarch64/advsimd-compnum.d: Likewise.
+
 2017-02-24  Jan Beulich  <jbeulich@suse.com>
 
 	* testsuite/gas/i386/opcode.s: Add alternative TEST forms.

gas/config/tc-aarch64.c

@@ -8438,6 +8438,9 @@ static const struct aarch64_option_cpu_value_table aarch64_features[] = {
   {"sve",		AARCH64_FEATURE (AARCH64_FEATURE_SVE, 0),
 			AARCH64_FEATURE (AARCH64_FEATURE_FP
 					 | AARCH64_FEATURE_SIMD, 0)},
+  {"compnum",		AARCH64_FEATURE (AARCH64_FEATURE_COMPNUM, 0),
+			AARCH64_FEATURE (AARCH64_FEATURE_F16
+					 | AARCH64_FEATURE_SIMD, 0)},
   {"rcpc",		AARCH64_FEATURE (AARCH64_FEATURE_RCPC, 0),
 			AARCH64_ARCH_NONE},
   {NULL,		AARCH64_ARCH_NONE, AARCH64_ARCH_NONE},

gas/doc/c-aarch64.texi

@@ -131,6 +131,9 @@ automatically cause those extensions to be disabled.
 @multitable @columnfractions .12 .17 .17 .54
 @headitem Extension @tab Minimum Architecture @tab Enabled by default
  @tab Description
+@item @code{compnum} @tab ARMv8.2-A @tab ARMv8.3-A or later
+ @tab Enable the complex number SIMD extensions.  This implies
+ @code{fp16} and @code{simd}.
 @item @code{crc} @tab ARMv8-A @tab ARMv8.1-A or later
  @tab Enable CRC instructions.
 @item @code{crypto} @tab ARMv8-A @tab No

gas/testsuite/gas/aarch64/advsimd-compnum.d

@@ -0,0 +1,40 @@
+#as: -march=armv8.2-a+compnum -I$srcdir/$subdir
+#objdump: -dr
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+0+ <.*>:
+[^:]+:	6ec3c441 	fcmla	v1\.2d, v2\.2d, v3\.2d, #0
+[^:]+:	6ec3cc41 	fcmla	v1\.2d, v2\.2d, v3\.2d, #90
+[^:]+:	6ec3d441 	fcmla	v1\.2d, v2\.2d, v3\.2d, #180
+[^:]+:	6ec3dc41 	fcmla	v1\.2d, v2\.2d, v3\.2d, #270
+[^:]+:	2e83cc41 	fcmla	v1\.2s, v2\.2s, v3\.2s, #90
+[^:]+:	6e83cc41 	fcmla	v1\.4s, v2\.4s, v3\.4s, #90
+[^:]+:	2e43cc41 	fcmla	v1\.4h, v2\.4h, v3\.4h, #90
+[^:]+:	6e43cc41 	fcmla	v1\.8h, v2\.8h, v3\.8h, #90
+[^:]+:	6f831041 	fcmla	v1\.4s, v2\.4s, v3\.s\[0\], #0
+[^:]+:	6f833041 	fcmla	v1\.4s, v2\.4s, v3\.s\[0\], #90
+[^:]+:	6f835041 	fcmla	v1\.4s, v2\.4s, v3\.s\[0\], #180
+[^:]+:	6f837041 	fcmla	v1\.4s, v2\.4s, v3\.s\[0\], #270
+[^:]+:	6f833841 	fcmla	v1\.4s, v2\.4s, v3\.s\[1\], #90
+[^:]+:	2f433041 	fcmla	v1\.4h, v2\.4h, v3\.h\[0\], #90
+[^:]+:	2f633041 	fcmla	v1\.4h, v2\.4h, v3\.h\[1\], #90
+[^:]+:	6f433041 	fcmla	v1\.8h, v2\.8h, v3\.h\[0\], #90
+[^:]+:	6f633041 	fcmla	v1\.8h, v2\.8h, v3\.h\[1\], #90
+[^:]+:	6f433841 	fcmla	v1\.8h, v2\.8h, v3\.h\[2\], #90
+[^:]+:	6f633841 	fcmla	v1\.8h, v2\.8h, v3\.h\[3\], #90
+[^:]+:	6ec3e441 	fcadd	v1\.2d, v2\.2d, v3\.2d, #90
+[^:]+:	6ec3f441 	fcadd	v1\.2d, v2\.2d, v3\.2d, #270
+[^:]+:	2e83e441 	fcadd	v1\.2s, v2\.2s, v3\.2s, #90
+[^:]+:	6e83e441 	fcadd	v1\.4s, v2\.4s, v3\.4s, #90
+[^:]+:	2e43e441 	fcadd	v1\.4h, v2\.4h, v3\.4h, #90
+[^:]+:	6e43e441 	fcadd	v1\.8h, v2\.8h, v3\.8h, #90
+[^:]+:	4e63d441 	fadd	v1\.2d, v2\.2d, v3\.2d
+[^:]+:	0e23d441 	fadd	v1\.2s, v2\.2s, v3\.2s
+[^:]+:	4e23d441 	fadd	v1\.4s, v2\.4s, v3\.4s
+[^:]+:	0e401400 	fadd	v0\.4h, v0\.4h, v0\.4h
+[^:]+:	0e431441 	fadd	v1\.4h, v2\.4h, v3\.4h
+[^:]+:	4e401400 	fadd	v0\.8h, v0\.8h, v0\.8h
+[^:]+:	4e431441 	fadd	v1\.8h, v2\.8h, v3\.8h

gas/testsuite/gas/aarch64/advsimd-compnum.s

@@ -0,0 +1,9 @@
+	.include "advsimd-armv8_3.s"
+
+	fadd	v1.2d, v2.2d, v3.2d
+	fadd	v1.2s, v2.2s, v3.2s
+	fadd	v1.4s, v2.4s, v3.4s
+	fadd	v0.4h, v0.4h, v0.4h
+	fadd	v1.4h, v2.4h, v3.4h
+	fadd	v0.8h, v0.8h, v0.8h
+	fadd	v1.8h, v2.8h, v3.8h

include/ChangeLog

@@ -1,3 +1,8 @@
+2017-02-24  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* opcode/aarch64.h (AARCH64_FEATURE_COMPNUM): New macro.
+	(AARCH64_ARCH_V8_3): Include AARCH64_FEATURE_COMPNUM.
+
 2017-02-22  Andrew Waterman  <andrew@sifive.com>
 
 	* opcode/riscv-opc.h (CSR_SCOUNTEREN): New define.

include/opcode/aarch64.h

@@ -54,6 +54,7 @@ typedef uint32_t aarch64_insn;
 #define AARCH64_FEATURE_PROFILE	0x08000000	/* Statistical Profiling.  */
 #define AARCH64_FEATURE_SVE	0x10000000	/* SVE instructions.  */
 #define AARCH64_FEATURE_RCPC	0x20000000	/* RCPC instructions.  */
+#define AARCH64_FEATURE_COMPNUM	0x40000000	/* Complex # instructions.  */
 
 /* Architectures are the sum of the base and extensions.  */
 #define AARCH64_ARCH_V8		AARCH64_FEATURE (AARCH64_FEATURE_V8, \
@@ -72,7 +73,8 @@ typedef uint32_t aarch64_insn;
 						 | AARCH64_FEATURE_RAS)
 #define AARCH64_ARCH_V8_3	AARCH64_FEATURE (AARCH64_ARCH_V8_2,	\
 						 AARCH64_FEATURE_V8_3	\
-						 | AARCH64_FEATURE_RCPC)
+						 | AARCH64_FEATURE_RCPC	\
+						 | AARCH64_FEATURE_COMPNUM)
 
 #define AARCH64_ARCH_NONE	AARCH64_FEATURE (0, 0)
 #define AARCH64_ANY		AARCH64_FEATURE (-1, 0)	/* Any basic core.  */

opcodes/ChangeLog

@@ -1,3 +1,12 @@
+2017-02-24  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* aarch64-tbl.h (aarch64_feature_simd_v8_3): Replace with...
+	(aarch64_feature_compnum): ...this.
+	(SIMD_V8_3): Replace with...
+	(COMPNUM): ...this.
+	(CNUM_INSN): New macro.
+	(aarch64_opcode_table): Use it for the complex number instructions.
+
 2017-02-24  Jan Beulich  <jbeulich@suse.com>
 
 	* i386-dis.c (reg_table): REG_F6/1 and REG_F7/1 decode as TEST.

opcodes/aarch64-tbl.h

@@ -1938,8 +1938,8 @@ static const aarch64_feature_set aarch64_feature_v8_3 =
   AARCH64_FEATURE (AARCH64_FEATURE_V8_3, 0);
 static const aarch64_feature_set aarch64_feature_fp_v8_3 =
   AARCH64_FEATURE (AARCH64_FEATURE_V8_3 | AARCH64_FEATURE_FP, 0);
-static const aarch64_feature_set aarch64_feature_simd_v8_3 =
+static const aarch64_feature_set aarch64_feature_compnum =
-  AARCH64_FEATURE (AARCH64_FEATURE_V8_3 | AARCH64_FEATURE_SIMD, 0);
+  AARCH64_FEATURE (AARCH64_FEATURE_COMPNUM, 0);
 static const aarch64_feature_set aarch64_feature_rcpc =
   AARCH64_FEATURE (AARCH64_FEATURE_RCPC, 0);
 
@@ -1959,7 +1959,7 @@ static const aarch64_feature_set aarch64_feature_rcpc =
 #define SVE		&aarch64_feature_sve
 #define ARMV8_3		&aarch64_feature_v8_3
 #define FP_V8_3		&aarch64_feature_fp_v8_3
-#define SIMD_V8_3	&aarch64_feature_simd_v8_3
+#define COMPNUM		&aarch64_feature_compnum
 #define RCPC		&aarch64_feature_rcpc
 
 #define CORE_INSN(NAME,OPCODE,MASK,CLASS,OP,OPS,QUALS,FLAGS) \
@@ -1989,6 +1989,8 @@ static const aarch64_feature_set aarch64_feature_rcpc =
     FLAGS | F_STRICT, TIED, NULL }
 #define V8_3_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
   { NAME, OPCODE, MASK, CLASS, 0, ARMV8_3, OPS, QUALS, FLAGS, 0, NULL }
+#define CNUM_INSN(NAME,OPCODE,MASK,CLASS,OP,OPS,QUALS,FLAGS) \
+  { NAME, OPCODE, MASK, CLASS, OP, COMPNUM, OPS, QUALS, FLAGS, 0, NULL }
 #define RCPC_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
   { NAME, OPCODE, MASK, CLASS, 0, RCPC, OPS, QUALS, FLAGS, 0, NULL }
 
@@ -2130,7 +2132,7 @@ struct aarch64_opcode aarch64_opcode_table[] =
   SF16_INSN ("fmulx",   0x2f009000, 0xbfc0f400, asimdelem, OP3 (Vd, Vn, Em), QL_ELEMENT_FP_H, F_SIZEQ),
   RDMA_INSN ("sqrdmlah",0x2f00d000, 0xbf00f400, asimdelem, OP3 (Vd, Vn, Em), QL_ELEMENT,      F_SIZEQ),
   RDMA_INSN ("sqrdmlsh",0x2f00f000, 0xbf00f400, asimdelem, OP3 (Vd, Vn, Em), QL_ELEMENT,      F_SIZEQ),
-  {"fcmla", 0x2f001000, 0xbf009400, asimdelem, OP_FCMLA_ELEM, SIMD_V8_3, OP4 (Vd, Vn, Em, IMM_ROT2), QL_ELEMENT_ROT, F_SIZEQ, 0, NULL},
+  CNUM_INSN ("fcmla", 0x2f001000, 0xbf009400, asimdelem, OP_FCMLA_ELEM, OP4 (Vd, Vn, Em, IMM_ROT2), QL_ELEMENT_ROT, F_SIZEQ),
   /* AdvSIMD EXT.  */
   SIMD_INSN ("ext",  0x2e000000, 0xbfe08400, asimdext, 0, OP4 (Vd, Vn, Vm, IDX), QL_VEXT, F_SIZEQ),
   /* AdvSIMD modified immediate.  */
@@ -2374,8 +2376,8 @@ struct aarch64_opcode aarch64_opcode_table[] =
   /* AdvSIMD three same extension.  */
   RDMA_INSN ("sqrdmlah",0x2e008400, 0xbf20fe00, asimdsame, OP3 (Vd, Vn, Vm), QL_V3SAMEHS, F_SIZEQ),
   RDMA_INSN ("sqrdmlsh",0x2e008c00, 0xbf20fe00, asimdsame, OP3 (Vd, Vn, Vm), QL_V3SAMEHS, F_SIZEQ),
-  {"fcmla", 0x2e00c400, 0xbf20e400, asimdsame, 0, SIMD_V8_3, OP4 (Vd, Vn, Vm, IMM_ROT1), QL_V3SAMEHSD_ROT, F_SIZEQ, 0, NULL},
+  CNUM_INSN ("fcmla", 0x2e00c400, 0xbf20e400, asimdsame, 0, OP4 (Vd, Vn, Vm, IMM_ROT1), QL_V3SAMEHSD_ROT, F_SIZEQ),
-  {"fcadd", 0x2e00e400, 0xbf20ec00, asimdsame, 0, SIMD_V8_3, OP4 (Vd, Vn, Vm, IMM_ROT3), QL_V3SAMEHSD_ROT, F_SIZEQ, 0, NULL},
+  CNUM_INSN ("fcadd", 0x2e00e400, 0xbf20ec00, asimdsame, 0, OP4 (Vd, Vn, Vm, IMM_ROT3), QL_V3SAMEHSD_ROT, F_SIZEQ),
   /* AdvSIMD shift by immediate.  */
   SIMD_INSN ("sshr", 0xf000400, 0xbf80fc00, asimdshf, 0, OP3 (Vd, Vn, IMM_VLSR), QL_VSHIFT, 0),
   SIMD_INSN ("ssra", 0xf001400, 0xbf80fc00, asimdshf, 0, OP3 (Vd, Vn, IMM_VLSR), QL_VSHIFT, 0),