[binutils-gdb] Use get_thread_regcache instead of get_current_regcache in post_create_inferior

[Simon Marchi]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8dc3273e0c50b607ee97873ae745cbc0d3ec6d7f

commit 8dc3273e0c50b607ee97873ae745cbc0d3ec6d7f
Author: Simon Marchi <simon.marchi@efficios.com>
Date:   Wed Jan 15 12:47:44 2020 -0500

    Use get_thread_regcache instead of get_current_regcache in post_create_inferior
    
    In post_create_inferior, we get the current thread using the
    inferior_thread function and store it in `thr`.  We then call
    get_current_regcache immediately after, which does:
    
      return get_thread_regcache (inferior_thread ());
    
    This patch makes post_create_inferior use get_thread_regcache, passing
    `thr`, saving an unnecessary inferior_thread call.
    
    gdb/ChangeLog:
    
    	* infcmd.c (post_create_inferior): Use get_thread_regcache
    	instead of get_current_regcache.

Diff:
---
 gdb/ChangeLog | 5 +++++
 gdb/infcmd.c  | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d348abb..cd89a44 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-01-15  Simon Marchi  <simon.marchi@efficios.com>
+
+	* infcmd.c (post_create_inferior): Use get_thread_regcache
+	instead of get_current_regcache.
+
 2020-01-14  Tom Tromey  <tom@tromey.com>
 
 	PR symtab/12535:
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index cf8b312..3e7c43f 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -441,7 +441,8 @@ post_create_inferior (struct target_ops *target, int from_tty)
   thr->suspend.stop_pc = 0;
   try
     {
-      thr->suspend.stop_pc = regcache_read_pc (get_current_regcache ());
+      regcache *rc = get_thread_regcache (thr);
+      thr->suspend.stop_pc = regcache_read_pc (rc);
     }
   catch (const gdb_exception_error &ex)
     {