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[PATCH 21/57][Arm][GAS] Add support for MVE instructions: vmaxv, vmaxav, vminv and vminav

From: "Andre Vieira (lists)" <andre dot simoesdiasvieira at arm dot com>
To: binutils at sourceware dot org
Date: Wed, 1 May 2019 18:13:42 +0100
Subject: [PATCH 21/57][Arm][GAS] Add support for MVE instructions: vmaxv, vmaxav, vminv and vminav
References: <19569550-4d2e-0bb3-592a-d91050d490f6@arm.com>

Hi,

This patch adds support for MVE instructions VMAXV, VMAXAV, VMINV andVMINAV.


gas/ChangeLog:

2019-01-02  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/tc-arm.c (M_MNEM_vmaxv, M_MNEM_vmaxav, M_MNEM_vminv,
        M_MNEM_vminav): New instruction encodings.
	(do_mve_vmaxv): New encoding function.
        (insns): Add entries for new MVE mnemonics.
	* testsuite/gas/arm/mve-vmaxv-vminv-bad.d: New test.
	* testsuite/gas/arm/mve-vmaxv-vminv-bad.l: New test.
	* testsuite/gas/arm/mve-vmaxv-vminv-bad.s: New test.

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 051ab6837b6b5cf4d8482ef267d5cd4a4a67243c..1f6569495a6f5ec1c89a4cf56544f6ad73058bdf 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -14166,6 +14166,10 @@ do_t_loloop (void)
 #define M_MNEM_vdwdup	0xee011f60
 #define M_MNEM_vidup	0xee010f6e
 #define M_MNEM_viwdup	0xee010f60
+#define M_MNEM_vmaxv	0xeee20f00
+#define M_MNEM_vmaxav	0xeee00f00
+#define M_MNEM_vminv	0xeee20f80
+#define M_MNEM_vminav	0xeee00f80
 
 /* Neon instruction encoder helpers.  */
 
@@ -17271,6 +17275,31 @@ do_mve_vmaxnmv (void)
   mve_encode_rq (et.size == 16, 64);
 }
 
+static void
+do_mve_vmaxv (void)
+{
+  enum neon_shape rs = neon_select_shape (NS_RQ, NS_NULL);
+  struct neon_type_el et;
+
+  if (inst.instruction == M_MNEM_vmaxv || inst.instruction == M_MNEM_vminv)
+    et = neon_check_type (2, rs, N_EQK, N_SU_MVE | N_KEY);
+  else
+    et = neon_check_type (2, rs, N_EQK, N_S8 | N_S16 | N_S32 | N_KEY);
+
+  if (inst.cond > COND_ALWAYS)
+    inst.pred_insn_type = INSIDE_VPT_INSN;
+  else
+    inst.pred_insn_type = MVE_OUTSIDE_PRED_INSN;
+
+  if (inst.operands[0].reg == REG_SP)
+    as_tsktsk (MVE_BAD_SP);
+  else if (inst.operands[0].reg == REG_PC)
+    as_tsktsk (MVE_BAD_PC);
+
+  mve_encode_rq (et.type == NT_unsigned, et.size);
+}
+
+
 static void
 do_neon_qrdmlah (void)
 {
@@ -24437,6 +24466,10 @@ static const struct asm_opcode insns[] =
  mCEF(viwdup,	_viwdup,    4, (RMQ, RRe, RR, EXPi),		  mve_viddup),
  mToC("vmaxa",	ee330e81,   2, (RMQ, RMQ),			  mve_vmaxa_vmina),
  mToC("vmina",	ee331e81,   2, (RMQ, RMQ),			  mve_vmaxa_vmina),
+ mCEF(vmaxv,	_vmaxv,	  2, (RR, RMQ),				  mve_vmaxv),
+ mCEF(vmaxav,	_vmaxav,  2, (RR, RMQ),				  mve_vmaxv),
+ mCEF(vminv,	_vminv,	  2, (RR, RMQ),				  mve_vmaxv),
+ mCEF(vminav,	_vminav,  2, (RR, RMQ),				  mve_vmaxv),
 
 #undef THUMB_VARIANT
 #define THUMB_VARIANT & mve_fp_ext
diff --git a/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.d b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.d
new file mode 100644
index 0000000000000000000000000000000000000000..9dd5c3ee581b80cd660636ab487ffc0a75f6c603
--- /dev/null
+++ b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.d
@@ -0,0 +1,5 @@
+#name: bad MVE VMAXV, VMAXAV, VMIMV and VMINAV instructions
+#as: -march=armv8.1-m.main+mve
+#error_output: mve-vmaxv-vminv-bad.l
+
+.*: +file format .*arm.*
diff --git a/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.l b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.l
new file mode 100644
index 0000000000000000000000000000000000000000..16d109d2d34856b79b17de7bc4ba9f26ae912f1c
--- /dev/null
+++ b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.l
@@ -0,0 +1,57 @@
+[^:]*: Assembler messages:
+[^:]*:10: Error: bad type in SIMD instruction -- `vmaxv.u64 r0,q1'
+[^:]*:11: Error: bad type in SIMD instruction -- `vmaxv.f16 r0,q1'
+[^:]*:12: Error: bad type in SIMD instruction -- `vminv.s64 r0,q1'
+[^:]*:13: Error: bad type in SIMD instruction -- `vminv.f32 r0,q1'
+[^:]*:14: Error: bad type in SIMD instruction -- `vmaxav.u16 r0,q1'
+[^:]*:15: Error: bad type in SIMD instruction -- `vmaxav.f32 r0,q1'
+[^:]*:16: Error: bad type in SIMD instruction -- `vminav.u32 r0,q1'
+[^:]*:17: Error: bad type in SIMD instruction -- `vminav.f16 r0,q1'
+[^:]*:18: Warning: instruction is UNPREDICTABLE with SP operand
+[^:]*:19: Warning: instruction is UNPREDICTABLE with PC operand
+[^:]*:20: Warning: instruction is UNPREDICTABLE with PC operand
+[^:]*:21: Warning: instruction is UNPREDICTABLE with SP operand
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:22: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:23: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:24: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:25: Warning: instruction is UNPREDICTABLE in an IT block
+[^:]*:27: Error: syntax error -- `vmaxveq.s32 r0,q1'
+[^:]*:28: Error: syntax error -- `vmaxveq.s32 r0,q1'
+[^:]*:30: Error: syntax error -- `vmaxveq.s32 r0,q1'
+[^:]*:31: Error: vector predicated instruction should be in VPT/VPST block -- `vmaxvt.s32 r0,q1'
+[^:]*:33: Error: instruction missing MVE vector predication code -- `vmaxv.s32 r0,q1'
+[^:]*:35: Error: syntax error -- `vmaxaveq.s32 r0,q1'
+[^:]*:36: Error: syntax error -- `vmaxaveq.s32 r0,q1'
+[^:]*:38: Error: syntax error -- `vmaxaveq.s32 r0,q1'
+[^:]*:39: Error: vector predicated instruction should be in VPT/VPST block -- `vmaxavt.s32 r0,q1'
+[^:]*:41: Error: instruction missing MVE vector predication code -- `vmaxav.s32 r0,q1'
+[^:]*:43: Error: syntax error -- `vminveq.s32 r0,q1'
+[^:]*:44: Error: syntax error -- `vminveq.s32 r0,q1'
+[^:]*:46: Error: syntax error -- `vminveq.s32 r0,q1'
+[^:]*:47: Error: vector predicated instruction should be in VPT/VPST block -- `vminvt.s32 r0,q1'
+[^:]*:49: Error: instruction missing MVE vector predication code -- `vminv.s32 r0,q1'
+[^:]*:51: Error: syntax error -- `vminaveq.s32 r0,q1'
+[^:]*:52: Error: syntax error -- `vminaveq.s32 r0,q1'
+[^:]*:54: Error: syntax error -- `vminaveq.s32 r0,q1'
+[^:]*:55: Error: vector predicated instruction should be in VPT/VPST block -- `vminavt.s32 r0,q1'
+[^:]*:57: Error: instruction missing MVE vector predication code -- `vminav.s32 r0,q1'
diff --git a/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.s b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.s
new file mode 100644
index 0000000000000000000000000000000000000000..e274a7a51c3869f26b04e20caf96486164ac73d8
--- /dev/null
+++ b/gas/testsuite/gas/arm/mve-vmaxv-vminv-bad.s
@@ -0,0 +1,57 @@
+.macro cond, op
+.irp cond, eq, ne, gt, ge, lt, le
+it \cond
+\op\().s16 r0, q1
+.endr
+.endm
+
+.syntax unified
+.thumb
+vmaxv.u64 r0, q1
+vmaxv.f16 r0, q1
+vminv.s64 r0, q1
+vminv.f32 r0, q1
+vmaxav.u16 r0, q1
+vmaxav.f32 r0, q1
+vminav.u32 r0, q1
+vminav.f16 r0, q1
+vmaxv.s32 sp, q1
+vmaxav.s32 pc, q1
+vminv.s32 pc, q1
+vminav.s32 sp, q1
+cond vmaxv
+cond vmaxav
+cond vminv
+cond vminav
+it eq
+vmaxveq.s32 r0, q1
+vmaxveq.s32 r0, q1
+vpst
+vmaxveq.s32 r0, q1
+vmaxvt.s32 r0, q1
+vpst
+vmaxv.s32 r0, q1
+it eq
+vmaxaveq.s32 r0, q1
+vmaxaveq.s32 r0, q1
+vpst
+vmaxaveq.s32 r0, q1
+vmaxavt.s32 r0, q1
+vpst
+vmaxav.s32 r0, q1
+it eq
+vminveq.s32 r0, q1
+vminveq.s32 r0, q1
+vpst
+vminveq.s32 r0, q1
+vminvt.s32 r0, q1
+vpst
+vminv.s32 r0, q1
+it eq
+vminaveq.s32 r0, q1
+vminaveq.s32 r0, q1
+vpst
+vminaveq.s32 r0, q1
+vminavt.s32 r0, q1
+vpst
+vminav.s32 r0, q1

References:
- [PATCH 0/57][Arm][binutils]: Add support for Armv8.1-M Mainline MVE instructions
  - From: Andre Vieira (lists)

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