1 2020-01-30 Jan Beulich <jbeulich@suse.com>
3 * config/tc-i386.c (output_disp): Tighten base_opcode check.
4 * testsuite/gas/i386/got.s: Add LSL, MOVLPS, and BNDCN cases.
5 * testsuite/gas/i386/got-no-relax.d, testsuite/gas/i386/got.d:
8 2020-01-30 Jose E. Marchesi <jose.marchesi@oracle.com>
10 * testsuite/gas/bpf/alu.d: Update expected opcode for `neg'.
11 * testsuite/gas/bpf/alu-be.d: Likewise.
12 * testsuite/gas/bpf/alu32.d: Likewise for `neg32'.
13 * testsuite/gas/bpf/alu32-be.d: Likewise.
15 2020-01-30 Jan Beulich <jbeulich@suse.com>
17 * testsuite/gas/i386/x86-64-branch-2.s,
18 testsuite/gas/i386/x86-64-branch-4.s,
19 testsuite/gas/i386/x86-64-branch.s: Add RETW cases.
20 * testsuite/gas/i386/ilp32/x86-64-branch.d,
21 testsuite/gas/i386/x86-64-branch-2.d,
22 testsuite/gas/i386/x86-64-branch-4.l,
23 testsuite/gas/i386/x86-64-branch.d: Adjust expectations.
25 2020-01-30 Jan Beulich <jbeulich@suse.com>
27 * config/tc-i386.c (process_suffix): .
28 testsuite/gas/i386/noreg64.s: Add IRET and LRET cases.
29 testsuite/gas/i386/x86-64-opcode.s: Add suffix to IRET and LRET.
31 testsuite/gas/i386/x86-64-suffix.s: Drop IRET case without
33 testsuite/gas/i386/x86_64.s: Add RETF cases.
34 * testsuite/gas/i386/k1om.d, testsuite/gas/i386/l1om.d,
35 testsuite/gas/i386/noreg64.d, testsuite/gas/i386/noreg64.l,
36 testsuite/gas/i386/x86-64-opcode.d,
37 testsuite/gas/i386/x86-64-suffix-intel.d,
38 testsuite/gas/i386/x86-64-suffix.d,
39 testsuite/gas/i386/x86_64-intel.d
40 testsuite/gas/i386/x86_64.d: Adjust expectations.
41 * testsuite/gas/i386/x86-64-suffix.e,
42 testsuite/gas/i386/x86_64.e: New.
44 2020-01-30 Jan Beulich <jbeulich@suse.com>
46 * config/tc-i386.c (process_suffix): Redo and move FLDENV et al
49 2020-01-27 H.J. Lu <hongjiu.lu@intel.com>
52 * config/tc-i386.c (check_long_reg): Also convert to QWORD for
54 * doc/c-i386.texi: Add a node for AMD64 vs. Intel64 ISA
55 differences. Document movslq and movsxd.
56 * testsuite/gas/i386/i386.exp: Run PR binutils/25445 tests.
57 * testsuite/gas/i386/x86-64-movsxd-intel.d: New file.
58 * testsuite/gas/i386/x86-64-movsxd-intel64-intel.d: Likewise.
59 * testsuite/gas/i386/x86-64-movsxd-intel64-inval.l: Likewise.
60 * testsuite/gas/i386/x86-64-movsxd-intel64-inval.s: Likewise.
61 * testsuite/gas/i386/x86-64-movsxd-intel64.d: Likewise.
62 * testsuite/gas/i386/x86-64-movsxd-intel64.s: Likewise.
63 * testsuite/gas/i386/x86-64-movsxd-inval.l: Likewise.
64 * testsuite/gas/i386/x86-64-movsxd-inval.s: Likewise.
65 * testsuite/gas/i386/x86-64-movsxd.d: Likewise.
66 * testsuite/gas/i386/x86-64-movsxd.s: Likewise.
68 2020-01-27 Alan Modra <amodra@gmail.com>
70 * testsuite/gas/all/gas.exp: Replace case statements with switch
72 * testsuite/gas/elf/elf.exp: Likewise.
73 * testsuite/gas/macros/macros.exp: Likewise.
74 * testsuite/lib/gas-defs.exp: Likewise.
76 2020-01-27 Tamar Christina <tamar.christina@arm.com>
79 * testsuite/gas/aarch64/armv8_4-a.d: Add cfinv.
80 * testsuite/gas/aarch64/armv8_4-a.s: Likewise.
82 2020-01-22 Maxim Blinov <maxim.blinov@embecosm.com>
84 * testsuite/gas/riscv/march-ok-s.d: sx is no longer valid and
85 s exts must be known, so rename *ok* to *fail*.
86 * testsuite/gas/riscv/march-ok-sx.d: Likewise.
87 * testsuite/gas/riscv/march-ok-s-with-version: Likewise.
88 * testsuite/gas/riscv/march-fail-s.l: Expected error messages for
90 * testsuite/gas/riscv/march-fail-sx.l: Likewise.
91 * testsuite/gas/riscv/march-fail-sx-with-version.l: Likewise.
93 2020-01-22 H.J. Lu <hongjiu.lu@intel.com>
96 * config/tc-i386.c (check_long_reg): Always disallow double word
97 suffix in mnemonic with word general register.
98 * testsuite/gas/i386/general.s: Replace word general register
99 with double word general register for movl.
100 * testsuite/gas/i386/inval.s: Add tests for movl with word general
102 * testsuite/gas/i386/general.l: Updated.
103 * testsuite/gas/i386/inval.l: Likewise.
105 2020-01-22 Alan Modra <amodra@gmail.com>
107 * config/tc-ppc.c (parse_tls_arg): Handle tls arg for
108 __tls_get_addr_desc and __tls_get_addr_opt.
110 2020-01-21 Jan Beulich <jbeulich@suse.com>
112 * testsuite/gas/i386/inval-crc32.s,
113 testsuite/gas/i386/x86-64-inval-crc32.s: Add alignment directive.
114 * testsuite/gas/i386/inval-crc32.l,
115 testsuite/gas/i386/x86-64-inval-crc32.l: Adjust expectations.
117 2020-01-21 Jan Beulich <jbeulich@suse.com>
119 * config/tc-i386.c (process_suffix): Merge CRC32 handling into
120 generic code path. Deal with No_lSuf being set in a template.
121 * testsuite/gas/i386/inval-crc32.l,
122 testsuite/gas/i386/x86-64-inval-crc32.l: Expect warning(s)
123 instead of error(s) when operand size is ambiguous.
124 * testsuite/gas/i386/noreg16.s, testsuite/gas/i386/noreg32.s,
125 testsuite/gas/i386/noreg64.s: Add CRC32 tests.
126 * testsuite/gas/i386/noreg16.d, testsuite/gas/i386/noreg16.l,
127 testsuite/gas/i386/noreg32.d, testsuite/gas/i386/noreg32.l,
128 testsuite/gas/i386/noreg64.d, testsuite/gas/i386/noreg64.l:
131 2020-01-21 Jan Beulich <jbeulich@suse.com>
133 * config/tc-i386.c (process_suffix): Drop SYSRET special case
134 and an intel_syntax check. Re-write lack-of-suffix processing
136 * doc/c-i386.texi: Document operand size defaults for suffix-
137 less AT&T syntax insns.
138 * testsuite/gas/i386/bundle.s, testsuite/gas/i386/lock-1.s,
139 testsuite/gas/i386/opcode.s, testsuite/gas/i386/sse3.s,
140 testsuite/gas/i386/x86-64-avx-scalar.s,
141 testsuite/gas/i386/x86-64-avx.s,
142 testsuite/gas/i386/x86-64-bundle.s,
143 testsuite/gas/i386/x86-64-intel64.s,
144 testsuite/gas/i386/x86-64-lock-1.s,
145 testsuite/gas/i386/x86-64-opcode.s,
146 testsuite/gas/i386/x86-64-sse2avx.s,
147 testsuite/gas/i386/x86-64-sse3.s: Add missing suffixes.
148 * testsuite/gas/i386/nops.s, testsuite/gas/i386/sse-noavx.s,
149 testsuite/gas/i386/x86-64-nops.s,
150 testsuite/gas/i386/x86-64-ptwrite.s,
151 testsuite/gas/i386/x86-64-simd.s,
152 testsuite/gas/i386/x86-64-sse-noavx.s,
153 testsuite/gas/i386/x86-64-suffix.s: Drop bogus suffix-less
155 * testsuite/gas/i386/noreg16.s, testsuite/gas/i386/noreg32.s,
156 testsuite/gas/i386/noreg64.s: Add further tests.
157 * testsuite/gas/i386/ilp32/x86-64-nops.d,
158 testsuite/gas/i386/nops.d, testsuite/gas/i386/noreg16.d,
159 testsuite/gas/i386/noreg32.d, testsuite/gas/i386/noreg64.d,
160 testsuite/gas/i386/sse-noavx.d,
161 testsuite/gas/i386/x86-64-intel64.d,
162 testsuite/gas/i386/x86-64-nops.d,
163 testsuite/gas/i386/x86-64-opcode.d,
164 testsuite/gas/i386/x86-64-ptwrite-intel.d,
165 testsuite/gas/i386/x86-64-ptwrite.d,
166 testsuite/gas/i386/x86-64-simd-intel.d,
167 testsuite/gas/i386/x86-64-simd-suffix.d,
168 testsuite/gas/i386/x86-64-simd.d,
169 testsuite/gas/i386/x86-64-sse-noavx.d
170 testsuite/gas/i386/x86-64-suffix.d,
171 testsuite/gas/i386/x86-64-suffix-intel.d: Adjust expectations.
172 * testsuite/gas/i386/noreg16.l, testsuite/gas/i386/noreg32.l,
173 testsuite/gas/i386/noreg64.l: New.
174 * testsuite/gas/i386/i386.exp: Run new tests.
176 2020-01-21 Jan Beulich <jbeulich@suse.com>
178 * testsuite/gas/i386/avx512_bf16_vl.s,
179 testsuite/gas/i386/x86-64-avx512_bf16_vl.s: Add broadcast forms
180 of VCVTNEPS2BF16{X,Y}. Add operand-size less Intel syntax
181 broadcast forms of VCVTNEPS2BF16.
182 * testsuite/gas/i386/avx512_bf16_vl.d,
183 testsuite/gas/i386/x86-64-avx512_bf16_vl.d: Adjust expectations.
185 2020-01-20 Nick Clifton <nickc@redhat.com>
187 * po/uk.po: Updated Ukranian translation.
189 2020-01-20 H.J. Lu <hongjiu.lu@intel.com>
192 * config/tc-i386.c (output_insn): Add a dummy REX_OPCODE prefix
193 for lea with R_X86_64_GOTPC32_TLSDESC relocation when generating
195 * testsuite/gas/i386/ilp32/x32-tls.d: Updated.
196 * testsuite/gas/i386/ilp32/x32-tls.s: Add tests for lea with
197 R_X86_64_GOTPC32_TLSDESC relocation.
199 2020-01-18 Nick Clifton <nickc@redhat.com>
201 * configure: Regenerate.
202 * po/gas.pot: Regenerate.
204 2020-01-18 Nick Clifton <nickc@redhat.com>
206 Binutils 2.34 branch created.
208 2020-01-17 H.J. Lu <hongjiu.lu@intel.com>
210 * config/tc-i386.c (_i386_insn): Replace vex_encoding_vex2
211 with vex_encoding_vex.
212 (parse_insn): Likewise.
213 * doc/c-i386.texi: Replace {vex2} with {vex}. Update {vex}
214 and {vex3} documentation.
215 * testsuite/gas/i386/pseudos.s: Replace 3 {vex2} tests with
217 * testsuite/gas/i386/x86-64-pseudos.s: Likewise.
219 2020-01-16 Andre Vieira <andre.simoesdiasvieira@arm.com>
222 * config/tc-arm.c (mve_ext, mve_fp_ext): Use CORE_HIGH.
223 (armv8_1m_main_ext_table): Use CORE_HIGH for mve.
224 * testsuite/arm/armv8_1-m-fpu-mve-1.s: New.
225 * testsuite/arm/armv8_1-m-fpu-mve-1.d: New.
226 * testsuite/arm/armv8_1-m-fpu-mve-2.s: New.
227 * testsuite/arm/armv8_1-m-fpu-mve-2.d: New.
229 2020-01-16 Jan Beulich <jbeulich@suse.com>
231 * config/tc-i386.c (match_template): Drop found_cpu_match local
234 2020-01-16 Jan Beulich <jbeulich@suse.com>
236 * testsuite/gas/i386/avx512dq-inval.l,
237 testsuite/gas/i386/avx512dq-inval.s: New.
238 * testsuite/gas/i386/i386.exp: Run new test.
240 2020-01-15 Jozef Lawrynowicz <jozef.l@mittosystems.com>
242 * config/tc-msp430.c (CHECK_RELOC_MSP430): Always generate 430X
243 relocations when the target is 430X, except when extracting part of an
245 (msp430_srcoperand): Adjust comment.
246 Initialize the expp member of the msp430_operand_s struct as
248 (msp430_dstoperand): Likewise.
249 * testsuite/gas/msp430/msp430.exp: Run new test.
250 * testsuite/gas/msp430/reloc-lo-430x.d: New test.
251 * testsuite/gas/msp430/reloc-lo-430x.s: New test.
253 2020-01-15 Alan Modra <amodra@gmail.com>
255 * configure.tgt: Add sparc-*-freebsd case.
257 2020-01-14 Lili Cui <lili.cui@intel.com>
259 * testsuite/gas/i386/align-branch-1a.d: Updated for Darwin.
260 * testsuite/gas/i386/align-branch-1b.d: Likewise.
261 * testsuite/gas/i386/align-branch-1c.d: Likewise.
262 * testsuite/gas/i386/align-branch-1d.d: Likewise.
263 * testsuite/gas/i386/align-branch-1e.d: Likewise.
264 * testsuite/gas/i386/align-branch-1f.d: Likewise.
265 * testsuite/gas/i386/align-branch-1g.d: Likewise.
266 * testsuite/gas/i386/align-branch-1h.d: Likewise.
267 * testsuite/gas/i386/align-branch-1i.d: Likewise.
268 * testsuite/gas/i386/align-branch-5.d: Likewise.
269 * testsuite/gas/i386/x86-64-align-branch-1a.d: Likewise.
270 * testsuite/gas/i386/x86-64-align-branch-1b.d: Likewise.
271 * testsuite/gas/i386/x86-64-align-branch-1c.d: Likewise.
272 * testsuite/gas/i386/x86-64-align-branch-1d.d: Likewise.
273 * testsuite/gas/i386/x86-64-align-branch-1e.d: Likewise.
274 * testsuite/gas/i386/x86-64-align-branch-1f.d: Likewise.
275 * testsuite/gas/i386/x86-64-align-branch-1g.d: Likewise.
276 * testsuite/gas/i386/x86-64-align-branch-1h.d: Likewise.
277 * testsuite/gas/i386/x86-64-align-branch-1i.d: Likewise.
278 * testsuite/gas/i386/x86-64-align-branch-5.d: Likewise.
279 * testsuite/gas/i386/i386.exp: Skip x86-64-align-branch-2a,
280 x86-64-align-branch-2b and x86-64-align-branch-2c on Darwin.
282 2020-01-14 Sergey Belyashov <sergey.belyashov@gmail.com>
285 * config/tc-z80.c: Add support for half precision, single
286 precision and double precision floating point values.
287 * config/tc-z80.h b/gas/config/tc-z80.h: Disable string escapes.
288 * doc/as.texi: Add new z80 command line options.
289 * doc/c-z80.texi: Document new z80 command line options.
290 * testsuite/gas/z80/ez80_pref_dis.s: New test.
291 * testsuite/gas/z80/ez80_pref_dis.d: New test driver.
292 * testsuite/gas/z80/z80.exp: Run the new test.
293 * testsuite/gas/z80/fp_math48.d: Use correct command line option.
294 * testsuite/gas/z80/fp_zeda32.d: Likewise.
295 * testsuite/gas/z80/strings.d: Update expected output.
297 2020-01-13 Matthew Malcomson <matthew.malcomson@arm.com>
299 * config/tc-aarch64.c (f64mm, f32mm): Add sve as a feature
302 2020-01-13 Claudiu Zissulescu <claziss@gmail.com>
304 * config/tc-arc.c (arc_select_cpu): Re-init the bfd if we change
306 * config/tc-arc.h: Add header if/defs.
307 * testsuite/gas/arc/pseudos.d: Improve matching pattern.
309 2020-01-13 Alan Modra <amodra@gmail.com>
311 * testsuite/gas/wasm32/allinsn.d: Update expected output.
313 2020-01-13 Alan Modra <amodra@gmail.com>
315 * config/tc-tic4x.c (tic4x_operands_match): Correct tic3x trap
318 2020-01-10 Alan Modra <amodra@gmail.com>
320 * testsuite/gas/elf/pr14891.s: Don't start directives in first column.
321 * testsuite/gas/elf/pr21661.d: Don't run on hpux.
323 2020-01-03 Sergey Belyashov <sergey.belyashov@gmail.com>
326 * config/tc-z80.c (emit_ld_m_rr): Use integer types when checking
328 (emit_ld_r_r): Likewise.
329 (emit_ld_rr_m): Likewise.
330 (emit_ld_rr_nn): Likewise.
332 2020-01-09 Jan Beulich <jbeulich@suse.com>
334 * config/tc-i386.c (optimize_encoding): Add
335 is_any_vex_encoding() invocations. Drop respective
336 i.tm.extension_opcode == None checks.
338 2020-01-09 Jan Beulich <jbeulich@suse.com>
340 * config/tc-i386.c (md_assemble): Check RegRex is clear during
341 REX transformations. Correct comment indentation.
343 2020-01-09 Jan Beulich <jbeulich@suse.com>
345 * config/tc-i386.c (optimize_encoding): Generalize register
346 transformation for TEST optimization.
348 2020-01-09 Jan Beulich <jbeulich@suse.com>
350 * testsuite/gas/i386/x86-64-sysenter-amd.s,
351 testsuite/gas/i386/x86-64-sysenter-amd.d,
352 testsuite/gas/i386/x86-64-sysenter-amd.l,
353 testsuite/gas/i386/x86-64-sysenter-intel.d,
354 testsuite/gas/i386/x86-64-sysenter-mixed.d: New.
355 * testsuite/gas/i386/i386.exp: Run new tests.
357 2020-01-08 Nick Clifton <nickc@redhat.com>
360 * doc/as.texi (Align): Document the fact that all arguments can be
365 2020-01-08 Nick Clifton <nickc@redhat.com>
368 * config/obj-elf.c (obj_elf_section): Fail if the section name is
369 already defined as a different symbol type.
370 * testsuite/gas/elf/pr14891.s: New test source file.
371 * testsuite/gas/elf/pr14891.d: New test driver.
372 * testsuite/gas/elf/pr14891.s: New test expected error output.
373 * testsuite/gas/elf/elf.exp: Run the new test.
375 2020-01-08 Alan Modra <amodra@gmail.com>
377 * config/tc-z8k.c (md_begin): Make idx unsigned.
378 (get_specific): Likewise for this_index.
380 2020-01-07 Claudiu Zissulescu <claziss@synopsys.com>
382 * onfig/tc-arc.c (parse_reloc_symbol): New function.
383 (tokenize_arguments): Clean up, use parse_reloc_symbol function.
384 (md_operand): Set X_md to absent.
385 (arc_parse_name): Check for X_md.
387 2020-01-03 Sergey Belyashov <sergey.belyashov@gmail.com>
390 * as.h (TC_STRING_ESCAPES): Provide a default definition.
391 * app.c (do_scrub_chars): Use TC_STRING_ESCAPES instead of
393 * read.c (next_char_of_string): Likewise.
394 * config/tc-ppc.h (TC_STRING_ESCAPES): Define.
395 * config/tc-z80.h (TC_STRING_ESCAPES): Define.
397 2020-01-03 Nick Clifton <nickc@redhat.com>
399 * po/sv.po: Updated Swedish translation.
401 2020-01-03 Jan Beulich <jbeulich@suse.com>
403 * testsuite/gas/aarch64/f64mm.s: Scale index of LD1RO{H,W,D}.
404 * testsuite/gas/aarch64/f64mm.d: Adjust expectations.
406 2020-01-03 Jan Beulich <jbeulich@suse.com>
408 * testsuite/gas/aarch64/i8mm.s: Add 128-bit form tests for
409 by-element usdot. Add 64-bit form tests for by-element sudot.
410 * testsuite/gas/aarch64/i8mm.d: Adjust expectations.
412 2020-01-03 Jan Beulich <jbeulich@suse.com>
414 * testsuite/gas/aarch64/f64mm.s: Drop 'i' from uzip<n>.
415 * testsuite/gas/aarch64/f64mm.d: Adjust expectations.
417 2020-01-03 Jan Beulich <jbeulich@suse.com>
419 * testsuite/gas/aarch64/f64mm.d,
420 testsuite/gas/aarch64/sve-movprfx-mm.d: Adjust expectations.
422 2020-01-02 Sergey Belyashov <sergey.belyashov@gmail.com>
424 * config/tc-z80.c: Add new architectures: Z180 and eZ80. Add
425 support for assembler code generated by SDCC. Add new relocation
426 types. Add z80-elf target support.
427 * config/tc-z80.h: Add z80-elf target support. Enable dollar local
428 labels. Local labels starts from ".L".
429 * NEWS: Mention the new support.
430 * testsuite/gas/all/fwdexp.d: Fix failure due to symbol conflict.
431 * testsuite/gas/all/fwdexp.s: Likewise.
432 * testsuite/gas/all/cond.l: Likewise.
433 * testsuite/gas/all/cond.s: Likewise.
434 * testsuite/gas/all/fwdexp.d: Likewise.
435 * testsuite/gas/all/fwdexp.s: Likewise.
436 * testsuite/gas/elf/section2.e-mips: Likewise.
437 * testsuite/gas/elf/section2.l: Likewise.
438 * testsuite/gas/elf/section2.s: Likewise.
439 * testsuite/gas/macros/app1.d: Likewise.
440 * testsuite/gas/macros/app1.s: Likewise.
441 * testsuite/gas/macros/app2.d: Likewise.
442 * testsuite/gas/macros/app2.s: Likewise.
443 * testsuite/gas/macros/app3.d: Likewise.
444 * testsuite/gas/macros/app3.s: Likewise.
445 * testsuite/gas/macros/app4.d: Likewise.
446 * testsuite/gas/macros/app4.s: Likewise.
447 * testsuite/gas/macros/app4b.s: Likewise.
448 * testsuite/gas/z80/suffix.d: Fix failure on ELF target.
449 * testsuite/gas/z80/z80.exp: Add new tests
450 * testsuite/gas/z80/dollar.d: New file.
451 * testsuite/gas/z80/dollar.s: New file.
452 * testsuite/gas/z80/ez80_adl_all.d: New file.
453 * testsuite/gas/z80/ez80_adl_all.s: New file.
454 * testsuite/gas/z80/ez80_adl_suf.d: New file.
455 * testsuite/gas/z80/ez80_isuf.s: New file.
456 * testsuite/gas/z80/ez80_z80_all.d: New file.
457 * testsuite/gas/z80/ez80_z80_all.s: New file.
458 * testsuite/gas/z80/ez80_z80_suf.d: New file.
459 * testsuite/gas/z80/r800_extra.d: New file.
460 * testsuite/gas/z80/r800_extra.s: New file.
461 * testsuite/gas/z80/r800_ii8.d: New file.
462 * testsuite/gas/z80/r800_z80_doc.d: New file.
463 * testsuite/gas/z80/z180.d: New file.
464 * testsuite/gas/z80/z180.s: New file.
465 * testsuite/gas/z80/z180_z80_doc.d: New file.
466 * testsuite/gas/z80/z80_doc.d: New file.
467 * testsuite/gas/z80/z80_doc.s: New file.
468 * testsuite/gas/z80/z80_ii8.d: New file.
469 * testsuite/gas/z80/z80_ii8.s: New file.
470 * testsuite/gas/z80/z80_in_f_c.d: New file.
471 * testsuite/gas/z80/z80_in_f_c.s: New file.
472 * testsuite/gas/z80/z80_op_ii_ld.d: New file.
473 * testsuite/gas/z80/z80_op_ii_ld.s: New file.
474 * testsuite/gas/z80/z80_out_c_0.d: New file.
475 * testsuite/gas/z80/z80_out_c_0.s: New file.
476 * testsuite/gas/z80/z80_reloc.d: New file.
477 * testsuite/gas/z80/z80_reloc.s: New file.
478 * testsuite/gas/z80/z80_sli.d: New file.
479 * testsuite/gas/z80/z80_sli.s: New file.
481 2020-01-02 Szabolcs Nagy <szabolcs.nagy@arm.com>
483 * config/tc-arm.c (parse_reg_list): Use REG_TYPE_RN instead of
486 2020-01-01 Alan Modra <amodra@gmail.com>
488 Update year range in copyright notice of all files.
490 For older changes see ChangeLog-2019
492 Copyright (C) 2020 Free Software Foundation, Inc.
494 Copying and distribution of this file, with or without modification,
495 are permitted in any medium without royalty provided the copyright
496 notice and this notice are preserved.
502 version-control: never