PowerPC paranioa testing of symbol merging involving comdat groups

Ensures we don't mistreat st_other localentry bits.

	* testsuite/ld-powerpc/group1.d,
	* testsuite/ld-powerpc/group1.s,
	* testsuite/ld-powerpc/group1.sym,
	* testsuite/ld-powerpc/group2.d,
	* testsuite/ld-powerpc/group2.s,
	* testsuite/ld-powerpc/group2.sym,
	* testsuite/ld-powerpc/group3.s,
	* testsuite/ld-powerpc/group3.sym: New test files.
	* testsuite/ld-powerpc/powerpc.exp: Run new tests.

10 files changed, 85 insertions, 0 deletions

diff --git a/ld/ChangeLog b/ld/ChangeLog
index 0e2ddee..e9da9f8 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,15 @@
+2020-11-18  Alan Modra  <amodra@gmail.com>
+
+	* testsuite/ld-powerpc/group1.d,
+	* testsuite/ld-powerpc/group1.s,
+	* testsuite/ld-powerpc/group1.sym,
+	* testsuite/ld-powerpc/group2.d,
+	* testsuite/ld-powerpc/group2.s,
+	* testsuite/ld-powerpc/group2.sym,
+	* testsuite/ld-powerpc/group3.s,
+	* testsuite/ld-powerpc/group3.sym: New test files.
+	* testsuite/ld-powerpc/powerpc.exp: Run new tests.
+
 2020-11-18  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
 
 	* NEWS: Announce support for SHF_GNU_RETAIN.
diff --git a/ld/testsuite/ld-powerpc/group1.d b/ld/testsuite/ld-powerpc/group1.d
new file mode 100644
index 0000000..848e2ab
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group1.d
@@ -0,0 +1,14 @@
+#source: group1.s
+#source: group2.s
+#source: group3.s
+#as: -a64 -e foo
+#ld: -melf64ppc
+#objdump: -d
+
+.*
+
+Disassembly of section \.text:
+
+.* <foo>:
+.*:	(60 00 00 00|00 00 00 60) 	nop
+.*:	(4e 80 00 20|20 00 80 4e) 	blr
diff --git a/ld/testsuite/ld-powerpc/group1.s b/ld/testsuite/ld-powerpc/group1.s
new file mode 100644
index 0000000..cb918a5
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group1.s
@@ -0,0 +1,10 @@
+	.abiversion 2
+	.section .text,"axG",%progbits,foo,comdat
+	.globl	foo
+	.type	foo,%function
+foo:
+0:
+	nop
+	.localentry foo,.-0b
+	blr
+	.size	foo,.-0b
diff --git a/ld/testsuite/ld-powerpc/group1.sym b/ld/testsuite/ld-powerpc/group1.sym
new file mode 100644
index 0000000..4ad8c17
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group1.sym
@@ -0,0 +1,3 @@
+#...
+.* 8 FUNC +GLOBAL DEFAULT \[<localentry>: 4\] +1 foo
+#pass
diff --git a/ld/testsuite/ld-powerpc/group2.d b/ld/testsuite/ld-powerpc/group2.d
new file mode 100644
index 0000000..3611006
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group2.d
@@ -0,0 +1,13 @@
+#source: group2.s
+#source: group1.s
+#source: group3.s
+#as: -a64 -e foo
+#ld: -melf64ppc
+#objdump: -d
+
+.*
+
+Disassembly of section \.text:
+
+.* <foo>:
+.*:	(4e 80 00 20|20 00 80 4e) 	blr
diff --git a/ld/testsuite/ld-powerpc/group2.s b/ld/testsuite/ld-powerpc/group2.s
new file mode 100644
index 0000000..882745c
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group2.s
@@ -0,0 +1,9 @@
+	.abiversion 2
+	.section .text,"axG",%progbits,foo,comdat
+	.globl	foo
+	.type	foo,%function
+foo:
+0:
+	.localentry foo,0
+	blr
+	.size	foo,.-0b
diff --git a/ld/testsuite/ld-powerpc/group2.sym b/ld/testsuite/ld-powerpc/group2.sym
new file mode 100644
index 0000000..509978a
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group2.sym
@@ -0,0 +1,3 @@
+#...
+.* 4 FUNC +GLOBAL DEFAULT +1 foo
+#pass
diff --git a/ld/testsuite/ld-powerpc/group3.s b/ld/testsuite/ld-powerpc/group3.s
new file mode 100644
index 0000000..075ee2f
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group3.s
@@ -0,0 +1,9 @@
+	.abiversion 2
+	.section .text,"axG",%progbits,foo,comdat
+	.globl	foo
+	.type	foo,%function
+foo:
+0:
+	.localentry foo,1
+	blr
+	.size	foo,.-0b
diff --git a/ld/testsuite/ld-powerpc/group3.sym b/ld/testsuite/ld-powerpc/group3.sym
new file mode 100644
index 0000000..6b5028d
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/group3.sym
@@ -0,0 +1,3 @@
+#...
+.* 4 FUNC +GLOBAL DEFAULT \[<localentry>: 1\] +1 foo
+#pass
diff --git a/ld/testsuite/ld-powerpc/powerpc.exp b/ld/testsuite/ld-powerpc/powerpc.exp
index 2cbefb8..e780d2e 100644
--- a/ld/testsuite/ld-powerpc/powerpc.exp
+++ b/ld/testsuite/ld-powerpc/powerpc.exp
@@ -335,6 +335,15 @@ set ppc64elftests {
 	"-a64 -mpower10" {pcrelopt.s}
 	{{objdump {-d -Mpower10} pcrelopt.d}
 	 {readelf {-S --wide} pcrelopt.sec}} "pcrelopt" }
+    {"group1" "-melf64ppc -e foo" "" "-a64" {group1.s group2.s group3.s}
+	{{objdump {-d} group1.d}
+	 {readelf {-s} group1.sym}} "group1"}
+    {"group2" "-melf64ppc -e foo" "" "-a64" {group2.s group1.s group3.s}
+	{{objdump {-d} group2.d}
+	 {readelf {-s} group2.sym}} "group2"}
+    {"group3" "-melf64ppc -e foo" "" "-a64" {group3.s group2.s group1.s}
+	{{objdump {-d} group2.d}
+	 {readelf {-s} group3.sym}} "group3"}
 }
 
 set ppceabitests {