Enable linker garbage collection for the PRU target.

bfd	* elf32-pru.c (elf_backend_can_gc_sections): Define as 1.

ld	* testsuite/ld-elf/group8a.d: Remove pru from XFAIL list.
	* testsuite/ld-elf/group8b.d: Ditto.
	* testsuite/ld-elf/group9a.d: Ditto.
	* testsuite/ld-elf/group9b.d: Ditto.
	* testsuite/ld-elf/pr12851.d: Ditto.
	* testsuite/ld-elf/pr22677.d: Ditto.
	* testsuite/lib/ld-lib.exp (check_gc_sections_available): Remove
	pru from list.

bfd/ChangeLog

@@ -1,3 +1,7 @@
+2021-05-10  Dimitar Dimitrov  <dimitar@dinux.eu>
+
+	* elf32-pru.c (elf_backend_can_gc_sections): Define as 1.
+
 2021-05-08  Mike Frysinger  <vapier@gentoo.org>
 
 	* doc/Makefile.am (html-local, bfd/index.html): New targets.

bfd/elf32-pru.c

@@ -1601,6 +1601,7 @@ pru_elf32_link_hash_table_create (bfd *abfd)
 
 #define elf_backend_relocate_section	pru_elf32_relocate_section
 #define bfd_elf32_bfd_relax_section	pru_elf32_relax_section
+#define elf_backend_can_gc_sections	1
 
 #define TARGET_LITTLE_SYM		pru_elf32_vec
 #define TARGET_LITTLE_NAME		"elf32-pru"

ld/ChangeLog

@@ -1,3 +1,14 @@
+2021-05-10  Dimitar Dimitrov  <dimitar@dinux.eu>
+
+	* testsuite/ld-elf/group8a.d: Remove pru from XFAIL list.
+	* testsuite/ld-elf/group8b.d: Ditto.
+	* testsuite/ld-elf/group9a.d: Ditto.
+	* testsuite/ld-elf/group9b.d: Ditto.
+	* testsuite/ld-elf/pr12851.d: Ditto.
+	* testsuite/ld-elf/pr22677.d: Ditto.
+	* testsuite/lib/ld-lib.exp (check_gc_sections_available): Remove
+	pru from list.
+
 2021-05-10  Dimitar Dimitrov  <dimitar@dinux.eu>
 
 	* scripttempl/pru.sc (.resource_table): Add ALIGN directive.

ld/testsuite/ld-elf/group8a.d

@@ -2,7 +2,7 @@
 #ld: -r --gc-sections --entry foo
 #readelf: -g --wide
 # generic linker targets don't support --gc-sections, nor do a bunch of others
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 
 COMDAT group section \[[ 0-9]+\] `.group' \[foo\] contains . sections:
    \[Index\]    Name

ld/testsuite/ld-elf/group8b.d

@@ -2,7 +2,7 @@
 #ld: -r --gc-sections --entry bar
 #readelf: -g --wide
 # generic linker targets don't support --gc-sections, nor do a bunch of others
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 
 COMDAT group section \[[ 0-9]+\] `.group' \[bar\] contains . sections:
    \[Index\]    Name

ld/testsuite/ld-elf/group9a.d

@@ -2,7 +2,7 @@
 #ld: -r --gc-sections --entry foo
 #readelf: -g --wide
 # generic linker targets don't support --gc-sections, nor do a bunch of others
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 
 COMDAT group section \[[ 0-9]+\] `.group' \[foo\] contains . sections:
    \[Index\]    Name

ld/testsuite/ld-elf/group9b.d

@@ -2,7 +2,7 @@
 #ld: -r --gc-sections --entry bar
 #readelf: -g --wide
 # generic linker targets don't support --gc-sections, nor do a bunch of others
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 
 COMDAT group section \[[ 0-9]+\] `.group' \[foo\] contains . sections:
    \[Index\]    Name

ld/testsuite/ld-elf/pr12851.d

@@ -2,7 +2,7 @@
 #source: start.s
 #ld: --gc-sections
 #readelf: -s --wide
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 # generic linker targets don't support --gc-sections, nor do a bunch of others
 
 #...

ld/testsuite/ld-elf/pr22677.d

@@ -2,7 +2,7 @@
 #readelf: -S --wide
 # generic linker targets don't support --gc-sections, nor do a bunch of
 # others.
-#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-* pru-*-*
+#xfail: [is_generic] hppa64-*-* mep-*-* mn10200-*-*
 
 #...
   \[[ 0-9]+\] \.preinit_array\.01000[ \t]+PREINIT_ARRAY[ \t0-9a-f]+WA?.*

ld/testsuite/lib/ld-lib.exp

@@ -1090,7 +1090,6 @@ proc check_gc_sections_available { } {
 	    || [istarget mep-*-*]
 	    || [istarget mn10200-*-*]
 	    || [istarget pj*-*-*]
-	    || [istarget pru*-*-*]
 	    || [istarget s12z-*-*]
 	    || [istarget xgate-*-*]
 	    || [istarget z80-*-*] } {