MIPS/gas: Retain ISA mode bit for labels with .insn annotation

gas/
	* config/tc-mips.c (mips_move_labels): Retain ISA mode bit
	when moving labels in text segments.
	(mips_align): Indicate text mode when aligning labels in
	text segments.
	* gas/testsuite/gas/mips/insn-isa-mode.d: New test.
	* gas/testsuite/gas/mips/insn-isa-mode.s: New test source.
	* gas/testsuite/gas/mips/mips.exp: Run the new test.

gas/ChangeLog

@@ -1,3 +1,13 @@
+2019-08-19  Faraz Shahbazker  <fshahbazker@wavecomp.com>
+
+	* config/tc-mips.c (mips_move_labels): Retain ISA mode bit
+	when moving labels in text segments.
+	(mips_align): Indicate text mode when aligning labels in
+	text segments.
+	* gas/testsuite/gas/mips/insn-isa-mode.d: New test.
+	* gas/testsuite/gas/mips/insn-isa-mode.s: New test source.
+	* gas/testsuite/gas/mips/mips.exp: Run the new test.
+
 2019-08-19  Barnaby Wilks  <Barnaby.Wilks@arm.com>
 
 	* config/tc-arm.c (md_atof): Add precision check.  Formatting.

gas/config/tc-mips.c

@@ -4441,9 +4441,10 @@ mips_move_labels (struct insn_label_list *labels, bfd_boolean text_p)
       gas_assert (S_GET_SEGMENT (l->label) == now_seg);
       symbol_set_frag (l->label, frag_now);
       val = (valueT) frag_now_fix ();
-      /* MIPS16/microMIPS text labels are stored as odd.  */
+      /* MIPS16/microMIPS text labels are stored as odd.
+	 We just carry the ISA mode bit forward.  */
       if (text_p && HAVE_CODE_COMPRESSION)
-	++val;
+	val |= (S_GET_VALUE (l->label) & 0x1);
       S_SET_VALUE (l->label, val);
     }
 }
@@ -16218,7 +16219,7 @@ mips_align (int to, int *fill, struct insn_label_list *labels)
   else
     frag_align (to, fill ? *fill : 0, 0);
   record_alignment (now_seg, to);
-  mips_move_labels (labels, FALSE);
+  mips_move_labels (labels, subseg_text_p (now_seg));
 }
 
 /* Align to a given power of two.  .align 0 turns off the automatic

gas/testsuite/gas/mips/insn-isa-mode.d

@@ -0,0 +1,16 @@
+#objdump: -dr --show-raw-insn
+#name: microMIPS ISA mode for .insn label references
+#as: -32
+
+.*: +file format .*mips.*
+
+Disassembly of section \.text:
+00000000 <test1>:
+   0:	3c030000 	lui	v1,0x0
+			0: R_MIPS_HI16	\.text
+   4:	2463000b 	addiu	v1,v1,11
+			4: R_MIPS_LO16	\.text
+00000008 <test2>:
+   8:	0c00      	nop
+   a:	0c00      	nop
+	\.\.\.

gas/testsuite/gas/mips/insn-isa-mode.s

@@ -0,0 +1,14 @@
+	.text
+	.set nomicromips
+	.globl test1
+	.type	test1, @function
+test1:
+	la $3,test2+2
+	.set micromips
+test2:
+	.insn
+	.half 0x0c00
+	.half 0x0c00
+# Force some (non-delay-slot) zero bytes, to make 'objdump' print ...
+	.align	4, 0
+	.space	16

gas/testsuite/gas/mips/mips.exp

@@ -2093,4 +2093,5 @@ if { [istarget mips*-*-vxworks*] } {
     } else {
 	run_dump_test "pr14798"
     }
+    run_dump_test "insn-isa-mode"
 }