[PATCH 1/4] Remove unneeded AUX register symbols.

[Claudiu Zissulescu <Claudiu dot Zissulescu at synopsys dot com>]

During parsing process, we create a symbol for auxiliary registers
which are matched later on. This patch checks which of those symbols
are of auxiliary registers which are already matched and removes them.

OK to apply?
Claudiu

gas/
2016-03-31  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/tc-arc.c (preprocess_operands): Mark AUX symbol.
	(arc_adjust_symtab): New function.
	* config/tc-arc.h (ARC_FLAG_AUX): Define.
	(obj_adjust_symtab): Likewise.
	* testsuite/gas/arc/taux.d: New file.
	* testsuite/gas/arc/taux.s: Likewise.

Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
---
 gas/config/tc-arc.c          |  20 +++
 gas/config/tc-arc.h          |   6 +
 gas/testsuite/gas/arc/taux.d |  16 ++
 gas/testsuite/gas/arc/taux.s | 363 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 405 insertions(+)
 create mode 100644 gas/testsuite/gas/arc/taux.d
 create mode 100644 gas/testsuite/gas/arc/taux.s

diff --git a/gas/config/tc-arc.c b/gas/config/tc-arc.c
index 1b70e03..98cac6a 100644
--- a/gas/config/tc-arc.c
+++ b/gas/config/tc-arc.c
@@ -1611,6 +1611,7 @@ find_opcode_match (const struct arc_opcode_hash_entry *entry,
 			     from BKTOK.  */
 			  tok[tokidx].X_op = O_constant;
 			  tok[tokidx].X_add_number = auxr->address;
+			  ARC_SET_FLAG (tok[i].X_add_symbol, ARC_FLAG_AUX);
 			  break;
 			}
 
@@ -3857,3 +3858,22 @@ tc_arc_regname_to_dw2regnum (char *regname)
 
   return -1;
 }
+
+/* Adjust the symbol table.  Delete found AUX register symbols.  */
+
+void
+arc_adjust_symtab (void)
+{
+  symbolS * sym;
+
+  for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
+    {
+      /* I've created a symbol during parsing process.  Now, remove
+	 the symbol as it is found to be an AUX register.  */
+      if (ARC_GET_FLAG (sym) & ARC_FLAG_AUX)
+	symbol_remove (sym, &symbol_rootP, &symbol_lastP);
+    }
+
+  /* Now do generic ELF adjustments.  */
+  elf_adjust_symtab ();
+}
diff --git a/gas/config/tc-arc.h b/gas/config/tc-arc.h
index 076afea..54fa601 100644
--- a/gas/config/tc-arc.h
+++ b/gas/config/tc-arc.h
@@ -163,6 +163,8 @@ extern long md_pcrel_from_section (struct fix *, segT);
 
 /* The symbol is a ZOL's end loop label.  */
 #define ARC_FLAG_ZOL      (1 << 0)
+/* The symbol is an AUX register.  */
+#define ARC_FLAG_AUX      (1 << 1)
 
 /* We use this hook to check the validity of the last to instructions
    of a ZOL.  */
@@ -185,6 +187,10 @@ extern long md_pcrel_from_section (struct fix *, segT);
 /* Adjust non PC-rel values at relaxation time.  */
 #define TC_PCREL_ADJUST(F) arc_pcrel_adjust (F)
 
+/* Adjust symbol table.  */
+#define obj_adjust_symtab() arc_adjust_symtab ()
+
+extern void arc_adjust_symtab (void);
 extern int arc_pcrel_adjust (fragS *);
 extern bfd_boolean arc_parse_name (const char *, struct expressionS *);
 extern int tc_arc_fix_adjustable (struct fix *);
diff --git a/gas/testsuite/gas/arc/taux.d b/gas/testsuite/gas/arc/taux.d
new file mode 100644
index 0000000..6759d73
--- /dev/null
+++ b/gas/testsuite/gas/arc/taux.d
@@ -0,0 +1,16 @@
+#nm: --undefined-only
+#name: aux register test
+#source: taux.s
+# Most of the AUX rgisters are defined for all ARC variants besides the
+# FPX/FPUDA registers which should end as undefined when assemble generic.
+.* U aux_dpfp1h
+.* U aux_dpfp1l
+.* U aux_dpfp2h
+.* U aux_dpfp2l
+.* U d1h
+.* U d1l
+.* U d2h
+.* U d2l
+.* U dpfp_status
+.* U fp_status
+#pass
diff --git a/gas/testsuite/gas/arc/taux.s b/gas/testsuite/gas/arc/taux.s
new file mode 100644
index 0000000..57e2cf3
--- /dev/null
+++ b/gas/testsuite/gas/arc/taux.s
@@ -0,0 +1,363 @@
+	lr	r5, [status]
+	lr	r5, [semaphore]
+	lr	r5, [lp_start]
+	lr	r5, [lp_end]
+	lr	r5, [identity]
+	lr	r5, [debug]
+	lr	r5, [pc]
+	lr	r5, [adcr]
+	lr	r5, [apcr]
+	lr	r5, [acr]
+	lr	r5, [status32]
+	lr	r5, [status32_l1]
+	lr	r5, [status32_l2]
+	lr	r5, [bpu_flush]
+	lr	r5, [ivic]
+	lr	r5, [ic_ivic]
+	lr	r5, [che_mode]
+	lr	r5, [ic_ctrl]
+	lr	r5, [mulhi]
+	lr	r5, [lockline]
+	lr	r5, [ic_lil]
+	lr	r5, [dmc_code_ram]
+	lr	r5, [tag_addr_mask]
+	lr	r5, [tag_data_mask]
+	lr	r5, [line_length_mask]
+	lr	r5, [aux_ldst_ram]
+	lr	r5, [aux_dccm]
+	lr	r5, [unlockline]
+	lr	r5, [ic_ivil]
+	lr	r5, [ic_ram_address]
+	lr	r5, [ic_tag]
+	lr	r5, [ic_wp]
+	lr	r5, [ic_data]
+	lr	r5, [sram_seq]
+	lr	r5, [count0]
+	lr	r5, [control0]
+	lr	r5, [limit0]
+	lr	r5, [pcport]
+	lr	r5, [int_vector_base]
+	lr	r5, [aux_vbfdw_mode]
+	lr	r5, [jli_base]
+	lr	r5, [aux_vbfdw_bm0]
+	lr	r5, [aux_vbfdw_bm1]
+	lr	r5, [aux_vbfdw_accu]
+	lr	r5, [aux_vbfdw_ofst]
+	lr	r5, [aux_vbfdw_intstat]
+	lr	r5, [aux_xmac0_24]
+	lr	r5, [aux_xmac1_24]
+	lr	r5, [aux_xmac2_24]
+	lr	r5, [aux_fbf_store_16]
+	lr	r5, [ax0]
+	lr	r5, [ax1]
+	lr	r5, [aux_crc_poly]
+	lr	r5, [aux_crc_mode]
+	lr	r5, [mx0]
+	lr	r5, [mx1]
+	lr	r5, [my0]
+	lr	r5, [my1]
+	lr	r5, [xyconfig]
+	lr	r5, [scratch_a]
+	lr	r5, [burstsys]
+	lr	r5, [tsch]
+	lr	r5, [burstxym]
+	lr	r5, [burstsz]
+	lr	r5, [burstval]
+	lr	r5, [xtp_newval]
+	lr	r5, [aux_macmode]
+	lr	r5, [lsp_newval]
+	lr	r5, [aux_irq_lv12]
+	lr	r5, [aux_xmac0]
+	lr	r5, [aux_xmac1]
+	lr	r5, [aux_xmac2]
+	lr	r5, [dc_ivdc]
+	lr	r5, [dc_ctrl]
+	lr	r5, [dc_ldl]
+	lr	r5, [dc_ivdl]
+	lr	r5, [dc_flsh]
+	lr	r5, [dc_fldl]
+	lr	r5, [hexdata]
+	lr	r5, [hexctrl]
+	lr	r5, [led]
+	lr	r5, [dilstat]
+	lr	r5, [swstat]
+	lr	r5, [dc_ram_addr]
+	lr	r5, [dc_tag]
+	lr	r5, [dc_wp]
+	lr	r5, [dc_data]
+	lr	r5, [dccm_base_build]
+	lr	r5, [crc_build]
+	lr	r5, [bta_link_build]
+	lr	r5, [vbfdw_build]
+	lr	r5, [ea_build]
+	lr	r5, [dataspace]
+	lr	r5, [memsubsys]
+	lr	r5, [vecbase_ac_build]
+	lr	r5, [p_base_addr]
+	lr	r5, [data_uncached_build]
+	lr	r5, [fp_build]
+	lr	r5, [dpfp_build]
+	lr	r5, [mpu_build]
+	lr	r5, [rf_build]
+	lr	r5, [mmu_build]
+	lr	r5, [aa2_build]
+	lr	r5, [vecbase_build]
+	lr	r5, [d_cache_build]
+	lr	r5, [madi_build]
+	lr	r5, [dccm_build]
+	lr	r5, [timer_build]
+	lr	r5, [ap_build]
+	lr	r5, [i_cache_build]
+	lr	r5, [iccm_build]
+	lr	r5, [dspram_build]
+	lr	r5, [mac_build]
+	lr	r5, [multiply_build]
+	lr	r5, [swap_build]
+	lr	r5, [norm_build]
+	lr	r5, [minmax_build]
+	lr	r5, [barrel_build]
+	lr	r5, [ax0]
+	lr	r5, [ax1]
+	lr	r5, [ax2]
+	lr	r5, [ax3]
+	lr	r5, [ay0]
+	lr	r5, [ay1]
+	lr	r5, [ay2]
+	lr	r5, [ay3]
+	lr	r5, [mx00]
+	lr	r5, [mx01]
+	lr	r5, [mx10]
+	lr	r5, [mx11]
+	lr	r5, [mx20]
+	lr	r5, [mx21]
+	lr	r5, [mx30]
+	lr	r5, [mx31]
+	lr	r5, [my00]
+	lr	r5, [my01]
+	lr	r5, [my10]
+	lr	r5, [my11]
+	lr	r5, [my20]
+	lr	r5, [my21]
+	lr	r5, [my30]
+	lr	r5, [my31]
+	lr	r5, [xyconfig]
+	lr	r5, [burstsys]
+	lr	r5, [burstxym]
+	lr	r5, [burstsz]
+	lr	r5, [burstval]
+	lr	r5, [xylsbasex]
+	lr	r5, [xylsbasey]
+	lr	r5, [aux_xmaclw_h]
+	lr	r5, [aux_xmaclw_l]
+	lr	r5, [se_ctrl]
+	lr	r5, [se_stat]
+	lr	r5, [se_err]
+	lr	r5, [se_eadr]
+	lr	r5, [se_spc]
+	lr	r5, [sdm_base]
+	lr	r5, [scm_base]
+	lr	r5, [se_dbg_ctrl]
+	lr	r5, [se_dbg_data0]
+	lr	r5, [se_dbg_data1]
+	lr	r5, [se_dbg_data2]
+	lr	r5, [se_dbg_data3]
+	lr	r5, [se_watch]
+	lr	r5, [bpu_build]
+	lr	r5, [arc600_build_config]
+	lr	r5, [isa_config]
+	lr	r5, [hwp_build]
+	lr	r5, [pct_build]
+	lr	r5, [cc_build]
+	lr	r5, [pm_bcr]
+	lr	r5, [scq_switch_build]
+	lr	r5, [vraptor_build]
+	lr	r5, [dma_config]
+	lr	r5, [simd_config]
+	lr	r5, [vlc_build]
+	lr	r5, [simd_dma_build]
+	lr	r5, [ifetch_queue_build]
+	lr	r5, [smart_build]
+	lr	r5, [count1]
+	lr	r5, [control1]
+	lr	r5, [limit1]
+	lr	r5, [timer_xx]
+	lr	r5, [arcangel_periph_xx]
+	lr	r5, [periph_xx]
+	lr	r5, [aux_irq_lev]
+	lr	r5, [aux_irq_hint]
+	lr	r5, [aux_inter_core_interrupt]
+	lr	r5, [aes_aux_0]
+	lr	r5, [aes_aux_1]
+	lr	r5, [aes_aux_2]
+	lr	r5, [aes_crypt_mode]
+	lr	r5, [aes_auxs]
+	lr	r5, [aes_auxi]
+	lr	r5, [aes_aux_3]
+	lr	r5, [aes_aux_4]
+	lr	r5, [arith_ctl_aux]
+	lr	r5, [des_aux]
+	lr	r5, [ap_amv0]
+	lr	r5, [ap_amm0]
+	lr	r5, [ap_ac0]
+	lr	r5, [ap_amv1]
+	lr	r5, [ap_amm1]
+	lr	r5, [ap_ac1]
+	lr	r5, [ap_amv2]
+	lr	r5, [ap_amm2]
+	lr	r5, [ap_ac2]
+	lr	r5, [ap_amv3]
+	lr	r5, [ap_amm3]
+	lr	r5, [ap_ac3]
+	lr	r5, [ap_amv4]
+	lr	r5, [ap_amm4]
+	lr	r5, [ap_ac4]
+	lr	r5, [ap_amv5]
+	lr	r5, [ap_amm5]
+	lr	r5, [ap_ac5]
+	lr	r5, [ap_amv6]
+	lr	r5, [ap_amm6]
+	lr	r5, [ap_ac6]
+	lr	r5, [ap_amv7]
+	lr	r5, [ap_amm7]
+	lr	r5, [ap_ac7]
+	lr	r5, [pct_control]
+	lr	r5, [pct_bank]
+	lr	r5, [fp_status]
+	lr	r5, [aux_dpfp1l]
+	lr	r5, [d1l]
+	lr	r5, [aux_dpfp1h]
+	lr	r5, [d1h]
+	lr	r5, [d1l]
+	lr	r5, [aux_dpfp2l]
+	lr	r5, [d2l]
+	lr	r5, [d1h]
+	lr	r5, [aux_dpfp2h]
+	lr	r5, [d2h]
+	lr	r5, [d2l]
+	lr	r5, [dpfp_status]
+	lr	r5, [d2h]
+	lr	r5, [rtt]
+	lr	r5, [eret]
+	lr	r5, [erbta]
+	lr	r5, [erstatus]
+	lr	r5, [ecr]
+	lr	r5, [efa]
+	lr	r5, [tlbpd0]
+	lr	r5, [tlbpd1]
+	lr	r5, [tlbindex]
+	lr	r5, [tlbcommand]
+	lr	r5, [pid]
+	lr	r5, [mpuen]
+	lr	r5, [icause1]
+	lr	r5, [icause2]
+	lr	r5, [aux_ienable]
+	lr	r5, [aux_itrigger]
+	lr	r5, [xpu]
+	lr	r5, [bta]
+	lr	r5, [bta_l1]
+	lr	r5, [bta_l2]
+	lr	r5, [aux_irq_pulse_cancel]
+	lr	r5, [aux_irq_pending]
+	lr	r5, [scratch_data0]
+	lr	r5, [mpuic]
+	lr	r5, [mpufa]
+	lr	r5, [mpurdb0]
+	lr	r5, [mpurdp0]
+	lr	r5, [mpurdb1]
+	lr	r5, [mpurdp1]
+	lr	r5, [mpurdb2]
+	lr	r5, [mpurdp2]
+	lr	r5, [mpurdb3]
+	lr	r5, [mpurdp3]
+	lr	r5, [mpurdb4]
+	lr	r5, [mpurdp4]
+	lr	r5, [mpurdb5]
+	lr	r5, [mpurdp5]
+	lr	r5, [mpurdb6]
+	lr	r5, [mpurdp6]
+	lr	r5, [mpurdb7]
+	lr	r5, [mpurdp7]
+	lr	r5, [mpurdb8]
+	lr	r5, [mpurdp8]
+	lr	r5, [mpurdb9]
+	lr	r5, [mpurdp9]
+	lr	r5, [mpurdb10]
+	lr	r5, [mpurdp10]
+	lr	r5, [mpurdb11]
+	lr	r5, [mpurdp11]
+	lr	r5, [mpurdb12]
+	lr	r5, [mpurdp12]
+	lr	r5, [mpurdb13]
+	lr	r5, [mpurdp13]
+	lr	r5, [mpurdb14]
+	lr	r5, [mpurdp14]
+	lr	r5, [mpurdb15]
+	lr	r5, [mpurdp15]
+	lr	r5, [eia_flags]
+	lr	r5, [pm_status]
+	lr	r5, [wake]
+	lr	r5, [dvfs_performance]
+	lr	r5, [pwr_ctrl]
+	lr	r5, [aux_vlc_buf_idx]
+	lr	r5, [aux_vlc_read_buf]
+	lr	r5, [aux_vlc_valid_bits]
+	lr	r5, [aux_vlc_buf_in]
+	lr	r5, [aux_vlc_buf_free]
+	lr	r5, [aux_vlc_ibuf_status]
+	lr	r5, [aux_vlc_setup]
+	lr	r5, [aux_vlc_bits]
+	lr	r5, [aux_vlc_table]
+	lr	r5, [aux_vlc_get_symbol]
+	lr	r5, [aux_vlc_read_symbol]
+	lr	r5, [aux_ucavlc_setup]
+	lr	r5, [aux_ucavlc_state]
+	lr	r5, [aux_cavlc_zero_left]
+	lr	r5, [aux_uvlc_i_state]
+	lr	r5, [aux_vlc_dma_ptr]
+	lr	r5, [aux_vlc_dma_end]
+	lr	r5, [aux_vlc_dma_esc]
+	lr	r5, [aux_vlc_dma_ctrl]
+	lr	r5, [aux_vlc_get_0bit]
+	lr	r5, [aux_vlc_get_1bit]
+	lr	r5, [aux_vlc_get_2bit]
+	lr	r5, [aux_vlc_get_3bit]
+	lr	r5, [aux_vlc_get_4bit]
+	lr	r5, [aux_vlc_get_5bit]
+	lr	r5, [aux_vlc_get_6bit]
+	lr	r5, [aux_vlc_get_7bit]
+	lr	r5, [aux_vlc_get_8bit]
+	lr	r5, [aux_vlc_get_9bit]
+	lr	r5, [aux_vlc_get_10bit]
+	lr	r5, [aux_vlc_get_11bit]
+	lr	r5, [aux_vlc_get_12bit]
+	lr	r5, [aux_vlc_get_13bit]
+	lr	r5, [aux_vlc_get_14bit]
+	lr	r5, [aux_vlc_get_15bit]
+	lr	r5, [aux_vlc_get_16bit]
+	lr	r5, [aux_vlc_get_17bit]
+	lr	r5, [aux_vlc_get_18bit]
+	lr	r5, [aux_vlc_get_19bit]
+	lr	r5, [aux_vlc_get_20bit]
+	lr	r5, [aux_vlc_get_21bit]
+	lr	r5, [aux_vlc_get_22bit]
+	lr	r5, [aux_vlc_get_23bit]
+	lr	r5, [aux_vlc_get_24bit]
+	lr	r5, [aux_vlc_get_25bit]
+	lr	r5, [aux_vlc_get_26bit]
+	lr	r5, [aux_vlc_get_27bit]
+	lr	r5, [aux_vlc_get_28bit]
+	lr	r5, [aux_vlc_get_29bit]
+	lr	r5, [aux_vlc_get_30bit]
+	lr	r5, [aux_vlc_get_31bit]
+	lr	r5, [aux_cabac_ctrl]
+	lr	r5, [aux_cabac_ctx_state]
+	lr	r5, [aux_cabac_cod_param]
+	lr	r5, [aux_cabac_misc0]
+	lr	r5, [aux_cabac_misc1]
+	lr	r5, [aux_cabac_misc2]
+ 	lr	r5, [arc600_build_config]
+	lr	r5, [smart_control]
+	lr	r5, [smart_data_0]
+	lr	r5, [smart_data_1]
+	lr	r5, [smart_data_2]
+	lr	r5, [smart_data_3]
-- 
1.9.1