[PATCH 2/57][Arm][GAS] Add support for MVE instructions: vpst, vadd, vsub and vabd

gas/ChangeLog:
2019-05-16  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/tc-arm.c (enum it_instruction_type): Rename to...
	(enum pred_instruction_type): ... this. Include VPT types.
	(it_insn_type): Rename to ...
	(pred_insn_type): .. this.
	(arm_it): Change comment.
	(enum arm_reg_type): Add new value.
	(reg_expected_msgs): New entry.
	(asm_opcode): Add mayBeVecPred member.
	(BAD_SYNTAX, BAD_NOT_VPT, BAD_OUT_VPT, BAD_VPT_COND, MVE_NOT_IT,
	 MVE_NOT_VPT, MVE_BAD_PC, MVE_BAD_SP): New diagnostic MACROS.
	(arm_vcond_hsh): New table for vector condition codes.
	(now_it): Rename to ...
	(now_pred): ... this.
	(now_it_compatible): Rename to ...
	(now_pred_compatible): ... this.
	(in_it_block): Rename to ...
	(in_pred_block): ... this.
	(handle_it_state): Rename to ...
	(handle_pred_state): ... this. And change it to accept VPT blocks.
	(set_it_insn_type): Rename to ...
	(set_pred_insn_type): ... this.
	(set_it_insn_type_nonvoid): Rename to ...
	(set_pred_insn_type_nonvoid): ... this.
	(set_it_insn_type_last): Rename to ...
	(set_pred_insn_type_last): ... this.
	(record_feature_use): Moved.
	(mark_feature_used): Likewise.
	(parse_typed_reg_or_scalar): Add new case for REG_TYPE_MQ.
	(emit_insn): Use renamed functions and variables.
	(enum operand_parse_code): Add new operands.
	(parse_operands): Handle new operands.
	(do_scalar_fp16_v82_encode): Change predication detection.
	(do_it): Use renamed functions and variables.
	(do_t_add_sub): Likewise.
	(do_t_arit3): Likewise.
	(do_t_arit3c): Likewise.
	(do_t_blx): Likewise.
	(do_t_branch): Likewise.
	(do_t_bkpt_hlt1): Likewise.
	(do_t_branch23): Likewise.
	(do_t_bx): Likewise.
	(do_t_bxj): Likewise.
	(do_t_cond): Likewise.
	(do_t_csdb): Likewise.
	(do_t_cps): Likewise.
	(do_t_cpsi): Likewise.
	(do_t_cbz): Likewise.
	(do_t_it): Likewise.
	(do_mve_vpt): New function to handle VPT blocks.
	(encode_thumb2_multi): Use renamed functions and variables.
	(do_t_ldst): Use renamed functions and variables.
	(do_t_mov_cmp): Likewise.
	(do_t_mvn_tst): Likewise.
	(do_t_mul): Likewise.
	(do_t_nop): Likewise.
	(do_t_neg): Likewise.
	(do_t_rsb): Likewise.
	(do_t_setend): Likewise.
	(do_t_shift): Likewise.
	(do_t_smc): Likewise.
	(do_t_tb): Likewise.
	(do_t_udf): Likewise.
	(do_t_loloop): Likewise.
	(do_neon_cvt_1): Likewise.
	(do_vfp_nsyn_cvt_fpv8): Likewise.
	(do_vsel): Likewise.
	(do_vmaxnm): Likewise.
	(do_vrint_1): Likewise.
	(do_crypto_2op_1): Likewise.
	(do_crypto_3op_1): Likewise.
	(do_crc32_1): Likewise.
	(it_fsm_pre_encode): Likewise.
	(it_fsm_post_encode): Likewise.
	(force_automatic_it_block_close): Likewise.
	(check_it_blocks_finished): Likewise.
	(check_pred_blocks_finished): Likewise.
	(arm_cleanup): Likewise.
	(now_it_add_mask): Rename to ...
	(now_pred_add_mask): ... this. And use new variables and functions.
	(NEON_ENC_TAB): Add entries for vabdl, vaddl and vsubl.
	(N_I_MVE, N_F_MVE, N_SU_MVE): New MACROs.
	(neon_check_type): Generalize error message.
	(mve_encode_qqr): New MVE generic encoding function.
	(neon_dyadic_misc): Change to accept MVE variants.
	(do_neon_dyadic_if_su): Likewise.
	(do_neon_addsub_if_i): Likewise.
	(do_neon_dyadic_long): Likewise.
	(vfp_or_neon_is_neon): Add extra checks.
	(check_simd_pred_availability): Helper function to check SIMD
	instruction availability with respect to predication.
	(enum opcode_tag): New suffix value.
	(opcode_lookup): Change to handle VPT blocks.
	(new_automatic_it_block): Rename to ...
	(close_automatic_it_block): ...this.
	(TxCE, TxC3, TxC3w, TUE, TUEc, TUF, CE, C3, ToC, ToU,
	 toC, toU, CL, cCE, cCL, C3E, xCM_, UE, UF, NUF, nUF,
	 NCE_tag, NCE, NCEF, nCE_tag, nCE, nCEF): Add default value for new
	field.
	(mCEF, mnCEF, mnCE, MNUF, mnUF, mToC, MNCE, MNCEF): New MACROs.
	(insns): Redefine vadd, vsub, cabd, vabdl, vaddl, vsubl to accept MVE
	variants. Add entries for vscclrm, and vpst.
	(md_begin): Add arm_vcond_hsh initialization.
	* config/tc-arm.h (enum it_state): Rename to...
	(enum pred_state): ...this.
	(struct current_it): Rename to...
	(struct current_pred): ...this.
	(enum pred_type): New enum.
	(struct arm_segment_info_type): Use current_pred.
	* testsuite/gas/arm/armv8_3-a-fp-bad.l: Update error message.
	* testsuite/gas/arm/armv8_3-a-simd-bad.l: Update error message.
	* testsuite/gas/arm/dotprod-illegal.l: Update error message.
	* testsuite/gas/arm/mve-vaddsubabd-bad-1.d: New test.
	* testsuite/gas/arm/mve-vaddsubabd-bad-1.l: New test.
	* testsuite/gas/arm/mve-vaddsubabd-bad-1.s: New test.
	* testsuite/gas/arm/mve-vaddsubabd-bad-2.d: New test.
	* testsuite/gas/arm/mve-vaddsubabd-bad-2.l: New test.
	* testsuite/gas/arm/mve-vaddsubabd-bad-2.s: New test.
	* testsuite/gas/arm/mve-vpst-bad.d: New test.
	* testsuite/gas/arm/mve-vpst-bad.l: New test.
	* testsuite/gas/arm/mve-vpst-bad.s: New test.
	* testsuite/gas/arm/neon-ldst-es-bad.l: Updated error message.

1 files changed, 10 insertions, 6 deletions

diff --git a/gas/config/tc-arm.h b/gas/config/tc-arm.h
index 0d5e79c..39cc968 100644
--- a/gas/config/tc-arm.h
+++ b/gas/config/tc-arm.h
@@ -254,21 +254,25 @@ arm_min (int am_p1, int am_p2)
 /* Registers are generally saved at negative offsets to the CFA.  */
 #define DWARF2_CIE_DATA_ALIGNMENT     (-4)
 
-/* State variables for IT block handling.  */
-enum it_state
+/* State variables for predication block handling.  */
+enum pred_state
 {
-  OUTSIDE_IT_BLOCK, MANUAL_IT_BLOCK, AUTOMATIC_IT_BLOCK
+  OUTSIDE_PRED_BLOCK, MANUAL_PRED_BLOCK, AUTOMATIC_PRED_BLOCK
 };
-struct current_it
+enum pred_type {
+  SCALAR_PRED, VECTOR_PRED
+};
+struct current_pred
 {
   int mask;
-  enum it_state state;
+  enum pred_state state;
   int cc;
   int block_length;
   char *insn;
   int state_handled;
   int warn_deprecated;
   int insn_cond;
+  enum pred_type type;
 };
 
 #ifdef OBJ_ELF
@@ -303,7 +307,7 @@ struct arm_segment_info_type
      emitted only once per section, to save unnecessary bloat.  */
   unsigned int marked_pr_dependency;
 
-  struct current_it current_it;
+  struct current_pred current_pred;
 };
 
 /* We want .cfi_* pseudo-ops for generating unwind info.  */