ld: Make ARC's tls_ie-01 test more flexible

This is to address the regressions addressed by Nic [1].

The regular expression pattern for the tls_ie-01 test was
too strict and raising false alarms.  The new pattern only
looks for matches that should be there AND ignores the boiler
plates from the object dump.

[1] New failures for ARC targets in linker testsuite
https://sourceware.org/pipermail/binutils/2020-November/114177.html

ld/

	* testsuite/ld-arc/tls_ie-01.d: Use a more general pattern.

ld/ChangeLog

@@ -1,3 +1,7 @@
+2020-11-23  Shahab Vahedi  <shahab@synopsys.org>
+
+	* testsuite/ld-arc/tls_ie-01.d: Use a more general pattern.
+
 2020-11-21  Nelson Chu  <nelson.chu@sifive.com>
 
 	* emultempl/riscvelf.em (riscv_elf_before_allocation): Change

ld/testsuite/ld-arc/tls_ie-01.d

@@ -2,12 +2,61 @@
 #as: -mcpu=arc700
 #ld: -static
 #objdump: -D -j .got
+#
+# sample outputs:
+# 1) baremetal toolchain (little endian)
+# ,-------------------------------------------------------.
+# |tmpdir/dump:     file format elf32-littlearc           |
+# |                                                       |
+# |                                                       |
+# |Disassembly of section .got:                           |
+# |                                                       |
+# |00002110 <_GLOBAL_OFFSET_TABLE_>:                      |
+# |	...                                               |
+# |    211c:	08 00 00 00     	.word	0x00000008|
+# |    2120:	0c 00 00 00     	.word	0x0000000c|
+# `-------------------------------------------------------'
+#
+# 2) linux toolchain (little endian)
+# ,-------------------------------------------------------.
+# |tmpdir/dump:     file format elf32-littlearc           |
+# |                                                       |
+# |                                                       |
+# |Disassembly of section .got:                           |
+# |                                                       |
+# |000120a4 <.got>:                                       |
+# |   120a4:	08 00 00 00     	.word	0x00000008|
+# |   120a8:	0c 00 00 00     	.word	0x0000000c|
+# `-------------------------------------------------------'
+#
+# 3) baremetal toolchain (big endian)
+# ,-------------------------------------------------------.
+# |tmpdir/dump:     file format elf32-bigarc              |
+# |                                                       |
+# |                                                       |
+# |Disassembly of section .got:                           |
+# |                                                       |
+# |00002110 <_GLOBAL_OFFSET_TABLE_>:                      |
+# |	...                                               |
+# |    211c:	00 00 00 08        	.word	0x00000008|
+# |    2120:	00 00 00 0c        	.word	0x0000000c|
+# `-------------------------------------------------------'
+#
+# 4) linux toolchain (big endian)
+# ,-------------------------------------------------------.
+# |tmpdir/dump:     file format elf32-bigarc              |
+# |                                                       |
+# |                                                       |
+# |Disassembly of section .got:                           |
+# |                                                       |
+# |00013ff4 <.got>:                                       |
+# |   13ff4:	00 00 00 08        	.word	0x00000008|
+# |   13ff8:	00 00 00 0c        	.word	0x0000000c|
+# `-------------------------------------------------------'
 
-[^:]+:     file format elf32-.*arc
-
-
+#...
 Disassembly of section \.got:
-[0-9a-f]+ <_GLOBAL_OFFSET_TABLE_>:
-\s+...
-\s+[0-9a-f]+:\s+08 00 00 00.*
-\s+[0-9a-f]+:\s+0c 00 00 00.*
+#...
+\s+[0-9a-f]+:\s+[0-9a-f\s]+\.word\s+0x0+8
+\s+[0-9a-f]+:\s+[0-9a-f\s]+\.word\s+0x0+c
+#pass