Make "thread find" hit lane target IDs as well

(gdb) info threads
  Id   Target Id                                         Frame
  1    Thread 0x7ffff66fb880 (LWP 4151298) "bit_extract" 0x00007ffff6d3c50b in ioctl () at ../sysdeps/unix/syscall-template.S:78
  2    Thread 0x7ffff66fa700 (LWP 4151306) "bit_extract" 0x00007ffff6d3c50b in ioctl () at ../sysdeps/unix/syscall-template.S:78
  4    Thread 0x7ffff5c7f700 (LWP 4151308) "bit_extract" 0x00007ffff6d3c50b in ioctl () at ../sysdeps/unix/syscall-template.S:78
* 5    AMDGPU Thread 1:1:1:1 (0,0,0)/0 "bit_extract"     bit_extract_kernel (C_d=<optimized out>, A_d=<optimized out>, N=<optimized out>) at bit_extract.cpp:38
(gdb) info lane
  Id   State Target Id                            Frame
* 0    A     AMDGPU Lane 1:1:1:1/0 (0,0,0)[0,0,0] bit_extract_kernel (C_d=<optimized out>, A_d=<optimized out>, N=<optimized out>) at bit_extract.cpp:38
  1    A     AMDGPU Lane 1:1:1:1/1 (0,0,0)[1,0,0] bit_extract_kernel (C_d=<optimized out>, A_d=<optimized out>, N=<optimized out>) at bit_extract.cpp:38
  2    A     AMDGPU Lane 1:1:1:1/2 (0,0,0)[2,0,0] bit_extract_kernel (C_d=<optimized out>, A_d=<optimized out>, N=<optimized out>) at bit_extract.cpp:38
(gdb) thread find \[0,0,0\]
Thread 5, lane 0 has target id 'AMDGPU Lane 1:1:1:1/0 (0,0,0)[0,0,0]'
(gdb) thread find \[1,0,0\]
Thread 5, lane 1 has target id 'AMDGPU Lane 1:1:1:1/1 (0,0,0)[1,0,0]'
(gdb)

Change-Id: I38cd34702edab47478732bb5e52ff536383adfca

Author: palves

gdb/thread.c

@@ -2707,12 +2707,33 @@ thread_find_command (const char *arg, int from_tty)
 	  match++;
 	}
 
-      std::string name = target_pid_to_str (tp->ptid);
-      if (!name.empty () && re_exec (name.c_str ()))
+      if (tp->has_simd_lanes ())
 	{
-	  gdb_printf (_("Thread %s has target id '%s'\n"),
-		      print_thread_id (tp), name.c_str ());
-	  match++;
+	  gdbarch *arch = target_thread_architecture (tp->ptid);
+	  int lane_count = gdbarch_used_lanes_count (arch, tp);
+
+	  scoped_restore_current_simd_lane restore_lane (tp);
+
+	  for (int lane = 0; lane < lane_count; ++lane)
+	    {
+	      std::string name = target_lane_to_str (tp, lane);
+	      if (!name.empty () && re_exec (name.c_str ()))
+		{
+		  gdb_printf (_("Thread %s, lane %d has target id '%s'\n"),
+			      print_thread_id (tp), lane, name.c_str ());
+		  match++;
+		}
+	    }
+	}
+      else
+	{
+	  std::string name = target_pid_to_str (tp->ptid);
+	  if (!name.empty () && re_exec (name.c_str ()))
+	    {
+	      gdb_printf (_("Thread %s has target id '%s'\n"),
+			  print_thread_id (tp), name.c_str ());
+	      match++;
+	    }
 	}
 
       tmp = target_extra_thread_info (tp);