x86-64: Add ilp32-12 to check R_X86_64_32 for x32

* testsuite/ld-x86-64/ilp32-12.d: New file.
	* testsuite/ld-x86-64/ilp32-12.s: Likewise.
	* testsuite/ld-x86-64/x86-64.exp: Run ilp32-12.

ld/ChangeLog

@@ -1,3 +1,9 @@
+2021-05-26  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/ld-x86-64/ilp32-12.d: New file.
+	* testsuite/ld-x86-64/ilp32-12.s: Likewise.
+	* testsuite/ld-x86-64/x86-64.exp: Run ilp32-12.
+
 2021-05-14  Nelson Chu  <nelson.chu@sifive.com>
 
 	* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Updated.

ld/testsuite/ld-x86-64/ilp32-12.d

@@ -0,0 +1,7 @@
+#as: --x32
+#ld: -shared -melf32_x86_64
+#readelf: -SW
+
+#...
+ +\[ [0-9]\] .debug_loclists .*
+#pass

ld/testsuite/ld-x86-64/ilp32-12.s

@@ -0,0 +1,5 @@
+	.section .rodata
+.L1:
+	.byte	0
+	.section .debug_loclists,"",@progbits
+	.long	.L1 - 0x1dfae

ld/testsuite/ld-x86-64/x86-64.exp

@@ -521,6 +521,7 @@ run_dump_test "ilp32-8"
 run_dump_test "ilp32-9"
 run_dump_test "ilp32-10"
 run_dump_test "ilp32-11"
+run_dump_test "ilp32-12"
 run_dump_test "ia32-1"
 run_dump_test "ia32-2"
 run_dump_test "ia32-3"