Enable the workaround for the Loongson 2F bug by default.

Patch by Mark H Weaver <mhw@netris.org>.

--- binutils/gas/config/tc-mips.c.orig	2012-09-04 10:21:03.000000000 -0400
+++ binutils/gas/config/tc-mips.c	2013-10-06 02:23:21.651983768 -0400
@@ -910,10 +910,10 @@
 };
 
 /* ...likewise -mfix-loongson2f-jump.  */
-static bfd_boolean mips_fix_loongson2f_jump;
+static bfd_boolean mips_fix_loongson2f_jump = FALSE;
 
 /* ...likewise -mfix-loongson2f-nop.  */
-static bfd_boolean mips_fix_loongson2f_nop;
+static bfd_boolean mips_fix_loongson2f_nop = TRUE;
 
 /* True if -mfix-loongson2f-nop or -mfix-loongson2f-jump passed.  */
 static bfd_boolean mips_fix_loongson2f;
--- binutils/gas/testsuite/gas/mips/mips.exp.orig	2012-09-04 10:17:13.000000000 -0400
+++ binutils/gas/testsuite/gas/mips/mips.exp	2013-10-06 02:23:21.663983768 -0400
@@ -91,6 +91,12 @@
 
     # Catch because the variable won't be set the first time through.
     catch {unset mips_arches}
+
+    # Disable the loongson2f nop fix by default, because most of the
+    # existing test cases for mips will fail otherwise.
+    global ASFLAGS
+    set old_ASFLAGS "$ASFLAGS"
+    set ASFLAGS "$ASFLAGS -mno-fix-loongson2f-nop"
 }
 
 # mips_arch_create ARCH GPRSIZE EXTENDS PROPS AS_FLAGS OBJDUMP_FLAGS \
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<tr><td><span title='2024-12-12 23:23:33 +0100'>2024-12-12</span></td><td><a href='/guix/commit/gnu/packages.scm?id=97e7e47d6f1e036e1ed6bd3f428e40d9794a3353'>packages: Optimize ‘all-packages’.</a><span class='msg-avail'>...<span class='msg-tooltip'>On my laptop, wall-clock time for (all-packages) goes from 27s to 1s.

* gnu/packages.scm (all-packages): Use a hash table to remember visited
packages instead of calling ‘delete-duplicates’ on the final list.

Change-Id: I4aae804656b56ef2095993e91f0572a5891f419f
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2024-12-01 20:14:15 +0100'>2024-12-01</span></td><td><a href='/guix/commit/gnu/packages.scm?id=4b5dae8defe4c0d5e98b5ce6abba853007485f23'>packages: Factorize ‘all-packages’.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages.scm (all-packages): New procedure.
* etc/source-manifest.scm (all-packages): Remove.
* guix/scripts/graph.scm (all-packages): Remove.
* guix/scripts/refresh.scm (all-packages): Remove.
* guix/scripts/weather.scm (all-packages): Remove.

Change-Id: I6072952c4b877b541037ce86402cfb7744eeb0a0
</span></span></td><td>Ludovic Courtès</td></tr>