Revert the following commit to work around a bootstrap comparison failure on
ARMv7, as reported at <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71399>.

commit f6ab85b7049a03962ea98924d00802da357a1ad3
Author: renlin <renlin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Wed Dec 2 14:06:31 2015 +0000

    [PR67383][ARM][4.9]Backport of "Allow any register for DImode values in Thumb2"
    
    This partially fix PR67383. It allows the reload more flexibility to choose
    spilling pseudo registers.
    
    
    gcc/ChangeLog:
    
    2015-12-02  Renlin Li  <renlin.li@arm.com>
    
            Backport from mainline.
            2014-04-22  Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
    
            * config/arm/arm.c (arm_hard_regno_mode_ok): Loosen
            restrictions on core registers for DImode values in Thumb2.
    
    
    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@231177 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 8ba6060..d9028a1 100644
--- b/gcc/config/arm/arm.c
+++ a/gcc/config/arm/arm.c
@@ -22624,19 +22624,12 @@
     }
 
   /* We allow almost any value to be stored in the general registers.
-     Restrict doubleword quantities to even register pairs in ARM state
-     so that we can use ldrd.  Do not allow very large Neon structure
-     opaque modes in general registers; they would use too many.  */
+     Restrict doubleword quantities to even register pairs so that we can
+     use ldrd.  Do not allow very large Neon structure opaque modes in
+     general registers; they would use too many.  */
   if (regno <= LAST_ARM_REGNUM)
-    {
-      if (ARM_NUM_REGS (mode) > 4)
-	  return FALSE;
-
-      if (TARGET_THUMB2)
-	return TRUE;
-
-      return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0);
-    }
+    return !(TARGET_LDRD && GET_MODE_SIZE (mode) > 4 && (regno & 1) != 0)
+      && ARM_NUM_REGS (mode) <= 4;
 
   if (regno == FRAME_POINTER_REGNUM
       || regno == ARG_POINTER_REGNUM)
be51fe03bf2b8f3ef009929fa0860e17aa15de4'>root</a>/<a href='/guix/log/gnu?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>gnu</a>/<a href='/guix/log/gnu/system?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>system</a>/<a href='/guix/log/gnu/system/nss.scm?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4'>nss.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/system/nss.scm?id=0be51fe03bf2b8f3ef009929fa0860e17aa15de4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
eft'>Author</th></tr>
<tr><td><span title='2023-06-17 14:38:32 +0200'>2023-06-17</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=ff690faf66d8f37ee6b679fcb7cf37e369624ee3'>gnu: Use target-hurd?, system-hurd? instead of hurd-target?, hurd-system?.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/hurd.scm (hurd-target?): Remove.
(hurd-system?): Move to...
* guix/utils.scm (system-hurd?): ...here.
* gnu/packages/*: Update all users, removing (gnu packages hurd) include where
now unused.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-10-18 14:37:26 +0000'>2021-10-18</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=e486b2b674badc80627b11077b7df2ac1cab92d8'>Merge remote-tracking branch 'signed/master' into core-updates</a></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-10-18 12:25:47 +0200'>2021-10-18</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=9cda21cf20a5c9bdf97e3a6d6c8f901fc3e4307d'>gnu: python-pylibacl: Add missing brace in description.</a><span class='msg-avail'>...<span class='msg-tooltip'>Regression introduced in 133f780039e63798535e4f52a4d9f1810ea5b2ab.

* gnu/packages/acl.scm (python-pylibacl)[description]: Add missing brace.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-10-15 17:30:56 +0200'>2021-10-15</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=133f780039e63798535e4f52a4d9f1810ea5b2ab'>gnu: python-pylibacl: Improve description.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/acl.scm (python-pylibacl)[synopsis]: Use @acronym{}.
[description]: Turn into a full sentence, mark up, and edit for GNU.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-10-15 17:30:56 +0200'>2021-10-15</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=a9b8443cc530fbf404f86c215ed77b8baeb0d108'>gnu: python-pylibacl: Do not return #t from custom phases.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/acl.scm (python-pylibacl)[arguments]: Don't explicitly
return #t from phases.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-07-23 17:26:45 +0200'>2021-07-23</span></td><td><a href='/guix/commit/gnu/packages/acl.scm?id=5d435b2235d5e269499be2ea67613c164e65efb6'>gnu: acl: Update to 2.3.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/acl.scm (acl): Update to 2.3.1.
</span></span></td><td>Marius Bakke</td></tr>