x86: Skip __[start|stop]_SECNAME for --gc-sections -z start-stop-gc

Don't convert memory load to immediate load on __start_SECNAME and
__stop_SECNAME for --gc-sections -z start-stop-gc if all SECNAME
sections been garbage collected.

bfd/

	PR ld/27491
	* elf32-i386.c (elf_i386_convert_load_reloc): Skip __start_SECNAME
	and __stop_SECNAME for --gc-sections -z start-stop-gc if the input
	section been garbage collected.
	* elf64-x86-64.c (elf_x86_64_convert_load_reloc): Likewise.
	* elfxx-x86.h (elf_x86_start_stop_gc_p): New function.

ld/
	PR ld/27491
	* testsuite/ld-i386/i386.exp: Run PR ld/27491 tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-i386/pr27491-1.s: New file.
	* testsuite/ld-i386/pr27491-1a.d: Likewise.
	* testsuite/ld-i386/pr27491-1b.d: Likewise.
	* testsuite/ld-i386/pr27491-1c.d: Likewise.
	* testsuite/ld-i386/pr27491-2.d: Likewise.
	* testsuite/ld-i386/pr27491-2.s: Likewise.
	* testsuite/ld-i386/pr27491-3.d: Likewise.
	* testsuite/ld-i386/pr27491-3.s: Likewise.
	* testsuite/ld-i386/pr27491-4.d: Likewise.
	* testsuite/ld-i386/pr27491-4a.s: Likewise.
	* testsuite/ld-i386/pr27491-4b.s: Likewise.
	* testsuite/ld-x86-64/pr27491-1.s: Likewise.
	* testsuite/ld-x86-64/pr27491-1a.d: Likewise.
	* testsuite/ld-x86-64/pr27491-1b.d: Likewise.
	* testsuite/ld-x86-64/pr27491-1c.d: Likewise.
	* testsuite/ld-x86-64/pr27491-2.d: Likewise.
	* testsuite/ld-x86-64/pr27491-2.s: Likewise.
	* testsuite/ld-x86-64/pr27491-3.d: Likewise.
	* testsuite/ld-x86-64/pr27491-3.s: Likewise.
	* testsuite/ld-x86-64/pr27491-4.d: Likewise.
	* testsuite/ld-x86-64/pr27491-4a.s: Likewise.
	* testsuite/ld-x86-64/pr27491-4b.s: Likewise.

27 files changed, 391 insertions, 0 deletions

diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 0d7f290..db6d1ac 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -1393,6 +1393,11 @@ elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
 	       || h->root.type == bfd_link_hash_defweak)
 	      && local_ref))
 	{
+	  /* Skip __start_SECNAME/__stop_SECNAME when --gc-sections
+	     -z start-stop-gc are used.  */
+	  if (elf_x86_start_stop_gc_p (link_info, h))
+	    return true;
+
 	convert_load:
 	  if (opcode == 0x8b)
 	    {
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 25e2bb1..bb6df79 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -1643,6 +1643,11 @@ elf_x86_64_convert_load_reloc (bfd *abfd,
 			   || h->root.type == bfd_link_hash_defweak)
 			  && h->root.u.def.section == bfd_und_section_ptr))))
 	    {
+	      /* Skip __start_SECNAME/__stop_SECNAME when --gc-sections
+	         -z start-stop-gc are used.  */
+	      if (elf_x86_start_stop_gc_p (link_info, h))
+		return true;
+
 	      /* Skip since R_X86_64_32/R_X86_64_32S may overflow.  */
 	      if (no_overflow)
 		return true;
diff --git a/bfd/elfxx-x86.h b/bfd/elfxx-x86.h
index 8251f64..aab641a 100644
--- a/bfd/elfxx-x86.h
+++ b/bfd/elfxx-x86.h
@@ -731,3 +731,36 @@ extern void _bfd_x86_elf_link_report_relative_reloc
   _bfd_x86_elf_merge_gnu_properties
 #define elf_backend_fixup_gnu_properties \
   _bfd_x86_elf_link_fixup_gnu_properties
+
+/* Return true if H is a __start_SECNAME/__stop_SECNAME symbol for the
+   SECNAME section which has been garbage collected by --gc-sections
+   -z start-stop-gc.  */
+
+static inline bool
+elf_x86_start_stop_gc_p (struct bfd_link_info *link_info,
+			 struct elf_link_hash_entry *h)
+{
+  if (h->start_stop
+      && link_info->gc_sections
+      && link_info->start_stop_gc)
+    {
+      asection *s = h->root.u.def.section;
+
+      do
+	{
+	  /* Return false if any SECNAME section is kept.  */
+	  if (s->gc_mark)
+	    return false;
+	  s = bfd_get_next_section_by_name (s->owner, s);
+	}
+      while (s != NULL);
+
+      /* Return true only if all SECNAME sections have been garbage
+	 collected.  */
+      return true;
+    }
+
+  /* Return false if H isn't a __start_SECNAME/__stop_SECNAME symbol or
+     --gc-sections or -z start-stop-gc isn't used.  */
+  return false;
+}
diff --git a/ld/testsuite/ld-i386/i386.exp b/ld/testsuite/ld-i386/i386.exp
index ceb6000..23ab854 100644
--- a/ld/testsuite/ld-i386/i386.exp
+++ b/ld/testsuite/ld-i386/i386.exp
@@ -493,6 +493,12 @@ run_dump_test "property-x86-isa3"
 run_dump_test "property-x86-isa4"
 run_dump_test "pr26869"
 run_dump_test "code16"
+run_dump_test "pr27491-1a"
+run_dump_test "pr27491-1b"
+run_dump_test "pr27491-1c"
+run_dump_test "pr27491-2"
+run_dump_test "pr27491-3"
+run_dump_test "pr27491-4"
 
 if { !([istarget "i?86-*-linux*"]
        || [istarget "i?86-*-gnu*"]
diff --git a/ld/testsuite/ld-i386/pr27491-1.s b/ld/testsuite/ld-i386/pr27491-1.s
new file mode 100644
index 0000000..89155ae
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-1.s
@@ -0,0 +1,14 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movl	__start_xx@got(%ebx), %eax
+	movl	__stop_xx@got(%ebx), %eax
+
+	.section xx,"a",unique,0
+	.byte 0
+
+	.section xx,"a",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-i386/pr27491-1a.d b/ld/testsuite/ld-i386/pr27491-1a.d
new file mode 100644
index 0000000..006c176
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-1a.d
@@ -0,0 +1,14 @@
+#source: pr27491-1.s
+#as: --32
+#ld: --gc-sections -melf_i386 -z start-stop-gc -shared
+#objdump: -dw
+
+.*: +file format elf32-i386
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	8b 83 ([0-9a-f]{2} ){4}[ \t]+mov +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8b 83 ([0-9a-f]{2} ){4}[ \t]+mov +-0x[a-f0-9]+\(%ebx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/pr27491-1b.d b/ld/testsuite/ld-i386/pr27491-1b.d
new file mode 100644
index 0000000..69b9ac3
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-1b.d
@@ -0,0 +1,11 @@
+#source: pr27491-1.s
+#as: --32
+#ld: --gc-sections -melf_i386 -z start-stop-gc -shared
+#nm: -n
+
+#failif
+#...
+[a-f0-9]+ R __start_xx
+#...
+[a-f0-9]+ R __stop_xx
+#...
diff --git a/ld/testsuite/ld-i386/pr27491-1c.d b/ld/testsuite/ld-i386/pr27491-1c.d
new file mode 100644
index 0000000..730e975
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-1c.d
@@ -0,0 +1,14 @@
+#source: pr27491-1.s
+#as: --32
+#ld: --gc-sections -melf_i386 -shared
+#objdump: -dw
+
+.*: +file format elf32-i386
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/pr27491-2.d b/ld/testsuite/ld-i386/pr27491-2.d
new file mode 100644
index 0000000..02b310a
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-2.d
@@ -0,0 +1,22 @@
+#as: --32
+#ld: --gc-sections -melf_i386 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf32-i386
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/pr27491-2.s b/ld/testsuite/ld-i386/pr27491-2.s
new file mode 100644
index 0000000..17871dd
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-2.s
@@ -0,0 +1,16 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movl	__start_xx@got(%ebx), %eax
+	movl	__stop_xx@got(%ebx), %eax
+	leal	bar1@got(%ebx), %eax
+
+	.section xx,"a",unique,0
+bar1:
+	.byte 0
+
+	.section xx,"a",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-i386/pr27491-3.d b/ld/testsuite/ld-i386/pr27491-3.d
new file mode 100644
index 0000000..7749570
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-3.d
@@ -0,0 +1,21 @@
+#as: --32
+#ld: --gc-sections -melf_i386 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf32-i386
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/pr27491-3.s b/ld/testsuite/ld-i386/pr27491-3.s
new file mode 100644
index 0000000..85fc3dd
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-3.s
@@ -0,0 +1,14 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movl	__start_xx@got(%ebx), %eax
+	movl	__stop_xx@got(%ebx), %eax
+
+	.section xx,"a",unique,0
+	.byte 0
+
+	.section xx,"aR",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-i386/pr27491-4.d b/ld/testsuite/ld-i386/pr27491-4.d
new file mode 100644
index 0000000..4a305da
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-4.d
@@ -0,0 +1,23 @@
+#source: pr27491-4a.s
+#source: pr27491-4b.s
+#as: --32
+#ld: --gc-sections -melf_i386 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf32-i386
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+ +[a-f0-9]+:	8d 83 ([0-9a-f]{2} ){4}[ \t]+lea +-0x[a-f0-9]+\(%ebx\),%eax
+#pass
diff --git a/ld/testsuite/ld-i386/pr27491-4a.s b/ld/testsuite/ld-i386/pr27491-4a.s
new file mode 100644
index 0000000..a183b2f
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-4a.s
@@ -0,0 +1,11 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movl	__start_xx@got(%ebx), %eax
+	movl	__stop_xx@got(%ebx), %eax
+
+	.section xx,"a",unique,0
+	.byte 0
diff --git a/ld/testsuite/ld-i386/pr27491-4b.s b/ld/testsuite/ld-i386/pr27491-4b.s
new file mode 100644
index 0000000..d0b83e9
--- /dev/null
+++ b/ld/testsuite/ld-i386/pr27491-4b.s
@@ -0,0 +1,2 @@
+	.section xx,"aR",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-x86-64/pr27491-1.s b/ld/testsuite/ld-x86-64/pr27491-1.s
new file mode 100644
index 0000000..0d5b771
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-1.s
@@ -0,0 +1,14 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movq	__start_xx@gotpcrel(%rip), %rax
+	movq	__stop_xx@gotpcrel(%rip), %rax
+
+	.section xx,"a",unique,0
+	.byte 0
+
+	.section xx,"a",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-x86-64/pr27491-1a.d b/ld/testsuite/ld-x86-64/pr27491-1a.d
new file mode 100644
index 0000000..ade5c6f
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-1a.d
@@ -0,0 +1,14 @@
+#source: pr27491-1.s
+#as: --64
+#ld: --gc-sections -melf_x86_64 -z start-stop-gc -shared
+#objdump: -dw
+
+.*: +file format elf64-x86-64
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	48 8b 05 ([0-9a-f]{2} ){4}[ \t]+mov +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+ +[a-f0-9]+:	48 8b 05 ([0-9a-f]{2} ){4}[ \t]+mov +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <_DYNAMIC\+0x[a-f0-9]+>
+#pass
diff --git a/ld/testsuite/ld-x86-64/pr27491-1b.d b/ld/testsuite/ld-x86-64/pr27491-1b.d
new file mode 100644
index 0000000..a6e21da
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-1b.d
@@ -0,0 +1,11 @@
+#source: pr27491-1.s
+#as: --64
+#ld: --gc-sections -melf_x86_64 -z start-stop-gc -shared
+#nm: -n
+
+#failif
+#...
+[a-f0-9]+ R __start_xx
+#...
+[a-f0-9]+ R __stop_xx
+#...
diff --git a/ld/testsuite/ld-x86-64/pr27491-1c.d b/ld/testsuite/ld-x86-64/pr27491-1c.d
new file mode 100644
index 0000000..1288361
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-1c.d
@@ -0,0 +1,21 @@
+#source: pr27491-1.s
+#as: --64
+#ld: --gc-sections -melf_x86_64 -shared
+#objdump: --syms -dw
+
+.*: +file format elf64-x86-64
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__start_xx>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__stop_xx>
+#pass
diff --git a/ld/testsuite/ld-x86-64/pr27491-2.d b/ld/testsuite/ld-x86-64/pr27491-2.d
new file mode 100644
index 0000000..753ebb6
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-2.d
@@ -0,0 +1,23 @@
+#as: --64
+#ld: --gc-sections -melf_x86_64 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf64-x86-64
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__start_xx>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__stop_xx>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <bar1>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <bar2>
+#pass
diff --git a/ld/testsuite/ld-x86-64/pr27491-2.s b/ld/testsuite/ld-x86-64/pr27491-2.s
new file mode 100644
index 0000000..a0975ff
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-2.s
@@ -0,0 +1,20 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movq	__start_xx@gotpcrel(%rip), %rax
+	movq	__stop_xx@gotpcrel(%rip), %rax
+	leaq	bar1(%rip), %rax
+	leaq	bar2(%rip), %rax
+
+	.section xx,"a",unique,0
+	.byte 0
+bar1:
+	.byte 0
+bar2:
+	.byte 0
+
+	.section xx,"a",unique,1
+	.byte 1
diff --git a/ld/testsuite/ld-x86-64/pr27491-3.d b/ld/testsuite/ld-x86-64/pr27491-3.d
new file mode 100644
index 0000000..6dda542
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-3.d
@@ -0,0 +1,21 @@
+#as: --64
+#ld: --gc-sections -melf_x86_64 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf64-x86-64
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__start_xx>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__stop_xx>
+#pass
diff --git a/ld/testsuite/ld-x86-64/pr27491-3.s b/ld/testsuite/ld-x86-64/pr27491-3.s
new file mode 100644
index 0000000..efdcba4
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-3.s
@@ -0,0 +1,14 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movq	__start_xx@gotpcrel(%rip), %rax
+	movq	__stop_xx@gotpcrel(%rip), %rax
+
+	.section xx,"a",unique,1
+	.byte 0
+
+	.section xx,"aR",unique,0
+	.byte 1
diff --git a/ld/testsuite/ld-x86-64/pr27491-4.d b/ld/testsuite/ld-x86-64/pr27491-4.d
new file mode 100644
index 0000000..54542fd
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-4.d
@@ -0,0 +1,23 @@
+#source: pr27491-4a.s
+#source: pr27491-4b.s
+#as: --64
+#ld: --gc-sections -melf_x86_64 -z start-stop-gc -shared
+#objdump: --syms -dw
+
+.*: +file format elf64-x86-64
+
+
+SYMBOL TABLE:
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __stop_xx
+#...
+[a-f0-9]+ g       xx	[a-f0-9]+ \.protected __start_xx
+#...
+
+
+Disassembly of section .text:
+
+[a-f0-9]+ <foo>:
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__start_xx>
+ +[a-f0-9]+:	48 8d 05 ([0-9a-f]{2} ){4}[ \t]+lea +0x[a-f0-9]+\(%rip\),%rax[ \t]+# [a-f0-9]+ <__stop_xx>
+#pass
diff --git a/ld/testsuite/ld-x86-64/pr27491-4a.s b/ld/testsuite/ld-x86-64/pr27491-4a.s
new file mode 100644
index 0000000..3b17a81
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-4a.s
@@ -0,0 +1,11 @@
+	.weak __start_xx
+	.weak __stop_xx
+
+	.text
+	.global foo
+foo:
+	movq	__start_xx@gotpcrel(%rip), %rax
+	movq	__stop_xx@gotpcrel(%rip), %rax
+
+	.section xx,"a",unique,1
+	.byte 0
diff --git a/ld/testsuite/ld-x86-64/pr27491-4b.s b/ld/testsuite/ld-x86-64/pr27491-4b.s
new file mode 100644
index 0000000..2b46b21
--- /dev/null
+++ b/ld/testsuite/ld-x86-64/pr27491-4b.s
@@ -0,0 +1,2 @@
+	.section xx,"aR",unique,0
+	.byte 1
diff --git a/ld/testsuite/ld-x86-64/x86-64.exp b/ld/testsuite/ld-x86-64/x86-64.exp
index 064438a..ba065c0 100644
--- a/ld/testsuite/ld-x86-64/x86-64.exp
+++ b/ld/testsuite/ld-x86-64/x86-64.exp
@@ -480,6 +480,12 @@ run_dump_test "property-x86-isa3-x32"
 run_dump_test "property-x86-isa4"
 run_dump_test "property-x86-isa4-x32"
 run_dump_test "code16"
+run_dump_test "pr27491-1a"
+run_dump_test "pr27491-1b"
+run_dump_test "pr27491-1c"
+run_dump_test "pr27491-2"
+run_dump_test "pr27491-3"
+run_dump_test "pr27491-4"
 
 if ![istarget "x86_64-*-linux*"] {
     return