system/gcc: Update to 13.3.0

0012-static-pie and 201-ada were forward-ported by my own paws.

Three digit 0xx underscore patches are from Gentoo.  This is also the
source of the insn-split and match-split patches, which significantly
increase performance on build.  They are also the source of the new
configure option --with-matchpd-partitions.  On systems with very many
cores/threads, a number higher than 32 would probably perform even
better, but 32 should give decent perf on 8+ threads, and runs quite
nicely on the 64-thread Talos II I ran the testbuild on.

202 is from Void.  The 300s are originally written by me.

The Ada patch now includes an improvement to use posix_openpt instead
of getpt, which fixes link errors later on.

We also now use STAGE1_CFLAGS and BOOT_CFLAGS to improve build times.
Improvement was clocked from 40m to 32m (-8m, or 20%) on gwyn.

The patch for Go name mangling is needed to build packages that use
reflect2, which includes user/gitlab-runner.

1 files changed, 0 insertions, 80 deletions

diff --git a/system/gcc/backport-r267157-posix-conformant-snprintf.patch b/system/gcc/backport-r267157-posix-conformant-snprintf.patch
deleted file mode 100644
index adedf0ce9..000000000
--- a/system/gcc/backport-r267157-posix-conformant-snprintf.patch
+++ /dev/null
@@ -1,80 +0,0 @@
-https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87096
-
-GCC's "optimised" snprintf is not POSIX conformant
-
---- trunk/gcc/gimple-ssa-sprintf.c	2018/12/07 17:02:11	266897
-+++ trunk/gcc/gimple-ssa-sprintf.c	2018/12/14 22:38:08	267157
-@@ -3899,6 +3899,7 @@
-   /* True when the destination size is constant as opposed to the lower
-      or upper bound of a range.  */
-   bool dstsize_cst_p = true;
-+  bool posunder4k = true;
- 
-   if (idx_dstsize == HOST_WIDE_INT_M1U)
-     {
-@@ -3931,11 +3932,20 @@
- 			    "specified bound %wu exceeds maximum object size "
- 			    "%wu",
- 			    dstsize, target_size_max () / 2);
-+	      /* POSIX requires snprintf to fail if DSTSIZE is greater
-+		 than INT_MAX.  Even though not all POSIX implementations
-+		 conform to the requirement, avoid folding in this case.  */
-+	      posunder4k = false;
- 	    }
- 	  else if (dstsize > target_int_max ())
--	    warning_at (gimple_location (info.callstmt), info.warnopt (),
--			"specified bound %wu exceeds %<INT_MAX%>",
--			dstsize);
-+	    {
-+	      warning_at (gimple_location (info.callstmt), info.warnopt (),
-+			  "specified bound %wu exceeds %<INT_MAX%>",
-+			  dstsize);
-+	      /* POSIX requires snprintf to fail if DSTSIZE is greater
-+		 than INT_MAX.  Avoid folding in that case.  */
-+	      posunder4k = false;
-+	    }
- 	}
-       else if (TREE_CODE (size) == SSA_NAME)
- 	{
-@@ -3944,9 +3954,29 @@
- 	  if (vr->type == VR_RANGE
-              && TREE_CODE (vr->min) == INTEGER_CST
-              && TREE_CODE (vr->max) == INTEGER_CST)
--	    dstsize = (warn_level < 2
--		       ? TREE_INT_CST_LOW (vr->max)
--		       : TREE_INT_CST_LOW (vr->min));
-+	    {
-+	      unsigned HOST_WIDE_INT minsize = TREE_INT_CST_LOW (vr->min);
-+	      unsigned HOST_WIDE_INT maxsize = TREE_INT_CST_LOW (vr->max);
-+	      dstsize = warn_level < 2 ? maxsize : minsize;
-+
-+	      if (minsize > target_int_max ())
-+		warning_at (gimple_location (info.callstmt), info.warnopt (),
-+			    "specified bound range [%wu, %wu] exceeds "
-+			    "%<INT_MAX%>",
-+			    minsize, maxsize);
-+
-+	      /* POSIX requires snprintf to fail if DSTSIZE is greater
-+		 than INT_MAX.  Avoid folding if that's possible.  */
-+	      if (maxsize > target_int_max ())
-+		posunder4k = false;
-+	    }
-+	  else if (vr->type == VR_VARYING)
-+	    {
-+	      /* POSIX requires snprintf to fail if DSTSIZE is greater
-+		 than INT_MAX.  Since SIZE's range is unknown, avoid
-+		 folding.  */
-+	      posunder4k = false;
-+	    }
- 
- 	  /* The destination size is not constant.  If the function is
- 	     bounded (e.g., snprintf) a lower bound of zero doesn't
-@@ -4033,7 +4073,7 @@
-      the call.  Avoid this optimization when -frounding-math is in effect
-      and the format string contains a floating point directive.  */
-   bool call_removed = false;
--  if (success && optimize > 0)
-+  if (!posunder4k && success && optimize > 0)
-     {
-       /* Save a copy of the iterator pointing at the call.  The iterator
-          may change to point past the call in try_substitute_return_value