From f19268c4063d233bc837eb1ebce792dafdb91c2a Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Thu, 7 Dec 2023 13:51:56 +0100
Subject: [PATCH 1/2] default-gcc-version: 12 -> 13 if !stdenv.isDarwin

---
 pkgs/top-level/all-packages.nix | 1 -
 1 file changed, 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1a7bfa536675a..efa17850c56b7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15831,7 +15831,6 @@ with pkgs;
   default-gcc-version =
     if (with stdenv.targetPlatform; isVc4 || libc == "relibc") then 6
     else if stdenv.buildPlatform.isDarwin  then 12  # unable to test
-    else if stdenv.buildPlatform.isAarch64 then 12  # unable to test
     else 13;
   gcc = pkgs.${"gcc${toString default-gcc-version}"};
   gccFun = callPackage ../development/compilers/gcc;

From b384f04673bf7c75ba628855d7b6c773e6d08024 Mon Sep 17 00:00:00 2001
From: Weijia Wang <9713184+wegank@users.noreply.github.com>
Date: Thu, 7 Dec 2023 17:39:56 +0100
Subject: [PATCH 2/2] gcc13: add patch for PR110280

---
 .../gcc/patches/13/ICE-PR110280.patch         | 60 +++++++++++++++++++
 .../compilers/gcc/patches/default.nix         |  1 +
 2 files changed, 61 insertions(+)
 create mode 100644 pkgs/development/compilers/gcc/patches/13/ICE-PR110280.patch

diff --git a/pkgs/development/compilers/gcc/patches/13/ICE-PR110280.patch b/pkgs/development/compilers/gcc/patches/13/ICE-PR110280.patch
new file mode 100644
index 0000000000000..7338b3dd1ede3
--- /dev/null
+++ b/pkgs/development/compilers/gcc/patches/13/ICE-PR110280.patch
@@ -0,0 +1,60 @@
+From f4029de35fb1b293a4fd586574b1b4b73ddf7880 Mon Sep 17 00:00:00 2001
+From: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
+Date: Wed, 26 Jul 2023 22:36:26 +0530
+Subject: [PATCH] [aarch64/match.pd] Fix ICE observed in PR110280.
+
+gcc/ChangeLog:
+	PR tree-optimization/110280
+	* match.pd (vec_perm_expr(v, v, mask) -> v): Explicitly build vector
+	using build_vector_from_val with the element of input operand, and
+	mask's type if operand and mask's types don't match.
+
+gcc/testsuite/ChangeLog:
+	PR tree-optimization/110280
+	* gcc.target/aarch64/sve/pr110280.c: New test.
+
+(cherry picked from commit 85d8e0d8d5342ec8b4e6a54e22741c30b33c6f04)
+---
+ gcc/match.pd                                    |  9 ++++++++-
+ gcc/testsuite/gcc.target/aarch64/sve/pr110280.c | 12 ++++++++++++
+ 2 files changed, 20 insertions(+), 1 deletion(-)
+ create mode 100644 gcc/testsuite/gcc.target/aarch64/sve/pr110280.c
+
+diff --git a/gcc/match.pd b/gcc/match.pd
+index 9118244825054..c3bb4fbc0a7a2 100644
+--- a/gcc/match.pd
++++ b/gcc/match.pd
+@@ -8292,7 +8292,14 @@ and,
+ 
+ (simplify
+  (vec_perm vec_same_elem_p@0 @0 @1)
+- @0)
++ (if (types_match (type, TREE_TYPE (@0)))
++  @0
++  (with
++   {
++     tree elem = uniform_vector_p (@0);
++   }
++   (if (elem)
++    { build_vector_from_val (type, elem); }))))
+ 
+ /* Push VEC_PERM earlier if that may help FMA perception (PR101895).  */
+ (simplify
+diff --git a/gcc/testsuite/gcc.target/aarch64/sve/pr110280.c b/gcc/testsuite/gcc.target/aarch64/sve/pr110280.c
+new file mode 100644
+index 0000000000000..d3279f383629f
+--- /dev/null
++++ b/gcc/testsuite/gcc.target/aarch64/sve/pr110280.c
+@@ -0,0 +1,12 @@
++/* { dg-do compile } */
++/* { dg-options "-O3 -fdump-tree-optimized" } */
++
++#include "arm_sve.h"
++
++svuint32_t l()
++{
++  _Alignas(16) const unsigned int lanes[4] = {0, 0, 0, 0};
++  return svld1rq_u32(svptrue_b8(), lanes);
++}
++
++/* { dg-final { scan-tree-dump-not "VEC_PERM_EXPR" "optimized" } } */
diff --git a/pkgs/development/compilers/gcc/patches/default.nix b/pkgs/development/compilers/gcc/patches/default.nix
index 55636b8ab51cd..9cb2f701df577 100644
--- a/pkgs/development/compilers/gcc/patches/default.nix
+++ b/pkgs/development/compilers/gcc/patches/default.nix
@@ -74,6 +74,7 @@ in
 ++ optional langFortran (if atLeast12 then ./gcc-12-gfortran-driving.patch else ./gfortran-driving.patch)
 ++ optional atLeast7 ./ppc-musl.patch
 ++ optional is12 ./12/lambda-ICE-PR109241.patch # backport ICE fix on ccache code
+++ optional is13 ./13/ICE-PR110280.patch # backport ICE fix on const_unop
 ++ optional (atLeast9 && langD) ./libphobos.patch