Build ifunc tests when non-native

Plus a number of fixes to the pr23169 tests.

	* testsuite/lib/ld-lib.exp (check_ifunc_available): Pass without
	running executable when non-native.
	(check_ifunc_attribute_available): Likewise.
	* testsuite/ld-ifunc/pr23169a.rd: Remove extraneous lines.  Match
	st_other strings.  Pass when func is an ifunc.
	* testsuite/ld-ifunc/pr23169b.rd: Remove extraneous lines.  Correct
	reloc regexp.  Correct match-anything line.
	* testsuite/ld-ifunc/pr23169c.rd: Remove extraneous lines.  Match
	st_other strings.

ld/ChangeLog

@@ -1,3 +1,15 @@
+2018-06-18  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/lib/ld-lib.exp (check_ifunc_available): Pass without
+	running executable when non-native.
+	(check_ifunc_attribute_available): Likewise.
+	* testsuite/ld-ifunc/pr23169a.rd: Remove extraneous lines.  Match
+	st_other strings.  Pass when func is an ifunc.
+	* testsuite/ld-ifunc/pr23169b.rd: Remove extraneous lines.  Correct
+	reloc regexp.  Correct match-anything line.
+	* testsuite/ld-ifunc/pr23169c.rd: Remove extraneous lines.  Match
+	st_other strings.
+
 2018-06-14  Alan Modra  <amodra@gmail.com>
 
 	* testsuite/ld-elf/readelf.exp: Delete DUMP and selection of

ld/testsuite/ld-ifunc/pr23169a.rd

@@ -1,6 +1,3 @@
-
-Symbol table '\.dynsym' contains [0-9]+ entries:
- +Num: +Value +Size Type +Bind +Vis +Ndx Name
-#...
- +[0-9]+: +[a-f0-9]+ +0 +FUNC +GLOBAL +DEFAULT +[0-9]+ +func
 #...
+ +[0-9]+: +[0-9a-f]+ +[0-9]+ +I?FUNC +GLOBAL +DEFAULT.* [0-9]+ +func
+#pass

ld/testsuite/ld-ifunc/pr23169b.rd

@@ -1,3 +1,4 @@
 #failif
-[a-f0-9]+ +[0-9a-f]+ +R_.*_* +[a-f0-9]+ +func(| \+ 0)
-...
+#...
+[0-9a-f]+ +[0-9a-f]+ +R_[^ ]+ +[0-9a-f]+ +func(| \+ 0)
+#pass

ld/testsuite/ld-ifunc/pr23169c.rd

@@ -1,6 +1,3 @@
-
-Symbol table '\.dynsym' contains [0-9]+ entries:
- +Num: +Value +Size Type +Bind +Vis +Ndx Name
-#...
- +[0-9]+: +[a-f0-9]+ +[0-9]+ +IFUNC +GLOBAL +DEFAULT +[0-9]+ +func
 #...
+ +[0-9]+: +[0-9a-f]+ +[0-9]+ +IFUNC +GLOBAL +DEFAULT.* [0-9]+ +func
+#pass

ld/testsuite/lib/ld-lib.exp

@@ -2137,7 +2137,7 @@ proc check_ifunc_available { } {
 	    set src [remote_download host $src]
 	}
 	set ifunc_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
-	if { $ifunc_available_saved == 1 } {
+	if { [isnative] && $ifunc_available_saved == 1 } {
 	  set ifunc_available_saved [run_host_cmd_yesno "$output" ""]
 	}
 	remote_file host delete $src
@@ -2184,7 +2184,7 @@ proc check_ifunc_attribute_available { } {
 	    set src [remote_download host $src]
 	}
 	set ifunc_attribute_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"]
-	if { $ifunc_attribute_available_saved == 1 } {
+	if { [isnative] && $ifunc_attribute_available_saved == 1 } {
 	  set ifunc_attribute_available_saved [run_host_cmd_yesno "$output" ""]
 	}
 	remote_file host delete $src