Match ld besides collect2 in gcov test

The regexp that checks that -lgcov is linked in when --coverage is
passed to the compiler driver requires the command line to match
'/collect2'.  Some of our targets don't match that, but they match /ld
or ${target_alias}-ld depending on the testing scenario, so I'd like
to tweak the test to match those as well.


for  gcc/testsuite/ChangeLog

	* gcc.misc-tests/options.exp: Match /ld and -ld besides
	/collect2.

From-SVN: r274557

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2019-08-16  Alexandre Oliva <oliva@adacore.com>
+
+	* gcc.misc-tests/options.exp: Match /ld and -ld besides
+	/collect2.
+
 2019-08-15  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/91443

gcc/testsuite/gcc.misc-tests/options.exp

@@ -65,7 +65,8 @@ proc check_for_all_options {language gcc_options compiler_pattern as_pattern ld_
 	fail "$test (assembler options)"
 	return
     }
-    if {![regexp -- "/collect2(\\.exe)? .*$ld_pattern" $gcc_output]} {
+    # Match /collect2, /ld, or *-ld.
+    if {![regexp -- "(/collect2|\[-/\]ld)(\\.exe)? .*$ld_pattern" $gcc_output]} {
 	fail "$test (linker options)"
 	return
     }