diff --git a/131801.patch b/131801.patch
new file mode 100644
index 0000000..853fba8
--- /dev/null
+++ b/131801.patch
@@ -0,0 +1,46 @@
+From d25887408ee9fb78d68787ff7388cba254aced6f Mon Sep 17 00:00:00 2001
+From: Nikita Popov <npopov@redhat.com>
+Date: Tue, 18 Mar 2025 14:36:06 +0100
+Subject: [PATCH] [GlobalMerge][PPC] Don't merge globals in llvm.metadata
+ section
+
+The llvm.metadata section is not emitted and has special semantics.
+We should not merge globals in it, similarly to how we already
+skip merging of `llvm.xyz` globals.
+
+Fixes https://github.com/llvm/llvm-project/issues/131394.
+---
+ llvm/lib/CodeGen/GlobalMerge.cpp                        | 3 ++-
+ llvm/test/CodeGen/PowerPC/global-merge-llvm-metadata.ll | 9 +++++++++
+ 2 files changed, 11 insertions(+), 1 deletion(-)
+ create mode 100644 llvm/test/CodeGen/PowerPC/global-merge-llvm-metadata.ll
+
+diff --git a/llvm/lib/CodeGen/GlobalMerge.cpp b/llvm/lib/CodeGen/GlobalMerge.cpp
+index 1aedc447935b7..ca743918cec24 100644
+--- a/llvm/lib/CodeGen/GlobalMerge.cpp
++++ b/llvm/lib/CodeGen/GlobalMerge.cpp
+@@ -711,7 +711,8 @@ bool GlobalMergeImpl::run(Module &M) {
+       continue;
+ 
+     // Ignore all 'special' globals.
+-    if (GV.getName().starts_with("llvm.") || GV.getName().starts_with(".llvm."))
++    if (GV.getName().starts_with("llvm.") ||
++        GV.getName().starts_with(".llvm.") || Section == "llvm.metadata")
+       continue;
+ 
+     // Ignore all "required" globals:
+diff --git a/llvm/test/CodeGen/PowerPC/global-merge-llvm-metadata.ll b/llvm/test/CodeGen/PowerPC/global-merge-llvm-metadata.ll
+new file mode 100644
+index 0000000000000..7db092e13afeb
+--- /dev/null
++++ b/llvm/test/CodeGen/PowerPC/global-merge-llvm-metadata.ll
+@@ -0,0 +1,9 @@
++; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
++
++@index = global i32 0, align 4
++@.str = private unnamed_addr constant [1 x i8] zeroinitializer, section "llvm.metadata"
++@.str.1 = private unnamed_addr constant [7 x i8] c"test.c\00", section "llvm.metadata" 
++@llvm.global.annotations = appending global [1 x { ptr, ptr, ptr, i32, ptr }] [{ ptr, ptr, ptr, i32, ptr } { ptr @index, ptr @.str, ptr @.str.1, i32 1, ptr null }], section "llvm.metadata"
++
++; CHECK-NOT: .set
++; CHECK-NOT: _MergedGlobals
diff --git a/llvm.spec b/llvm.spec
index 3bc6c32..9805bdf 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -2,7 +2,7 @@
 #region version
 %global maj_ver 20
 %global min_ver 1
-%global patch_ver 0
+%global patch_ver 1
 #global rc_ver 3
 
 %bcond_with snapshot_build
@@ -239,7 +239,7 @@
 #region main package
 Name:		%{pkg_name_llvm}
 Version:	%{maj_ver}.%{min_ver}.%{patch_ver}%{?rc_ver:~rc%{rc_ver}}%{?llvm_snapshot_version_suffix:~%{llvm_snapshot_version_suffix}}
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	The Low Level Virtual Machine
 
 License:	Apache-2.0 WITH LLVM-exception OR NCSA
@@ -307,7 +307,9 @@ Patch104: 0001-Driver-Give-devtoolset-path-precedence-over-Installe.patch
 #endregion CLANG patches
 
 # Fix LLVMConfig.cmake when symlinks are used.
-Patch105: 0001-cmake-Resolve-symlink-when-finding-install-prefix.patch
+# (https://github.com/llvm/llvm-project/pull/124743 landed in LLVM 21)
+Patch1902: 0001-cmake-Resolve-symlink-when-finding-install-prefix.patch
+Patch2003: 0001-cmake-Resolve-symlink-when-finding-install-prefix.patch
 
 #region LLD patches
 Patch106: 0001-19-Always-build-shared-libs-for-LLD.patch
@@ -327,6 +329,10 @@ Patch501: 0001-Fix-page-size-constant-on-aarch64-and-ppc64le.patch
 # https://github.com/llvm/llvm-project/issues/124001
 Patch1901: 0001-SystemZ-Fix-ICE-with-i128-i64-uaddo-carry-chain.patch
 
+# Backport fix for https://bugzilla.redhat.com/show_bug.cgi?id=2352554.
+# https://github.com/llvm/llvm-project/pull/131801
+Patch2004: 131801.patch
+
 %if 0%{?rhel} == 8
 %global python3_pkgversion 3.12
 %global __python3 /usr/bin/python3.12
@@ -3015,6 +3021,9 @@ fi
 
 #region changelog
 %changelog
+* Wed Mar 19 2025 Nikita Popov <npopov@redhat.com> - 20.1.1-1
+- Update to LLVM 20.1.1
+
 * Wed Mar 05 2025 Nikita Popov <npopov@redhat.com> - 20.1.0-1
 - Update to LLVM 20.1.0
 
diff --git a/sources b/sources
index 0acf8c8..faca134 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
-SHA512 (llvm-project-20.1.0.src.tar.xz) = c90fbc43c40e148357912adc40d799a79cce3d3a929136c137421f6342ed7338659e651f1dedfa8e10b94b9f2897e25b2962e17709add02857f89f10615a2397
-SHA512 (llvm-project-20.1.0.src.tar.xz.sig) = 68da1c2a13aaa48a67bbb9e716f9f030cf372edc651bca2861453378a6a9172a207ff59e29b175001f042888bf1f9c118fbf938f757e1f4c966943baa7e2696a
+SHA512 (llvm-project-20.1.1.src.tar.xz) = b851d3e24a2775f6e789720614a8192d72956f447a39d75e5160a8acf6bd3a3386fab2cca5590b7e020b65e408ccf32432f8dc03519fd4cf60b4b5674fe0547e
+SHA512 (llvm-project-20.1.1.src.tar.xz.sig) = 469b03f3ddbe56b074724375b09a45ee2730bee0ba4b25f64f93d93ef609c33d39136f051c216a74a35d98a70ffcd3d7507e38d19a20d5006c29a954ca32813b
 SHA512 (llvm-project-19.1.7.src.tar.xz) = c7d63286d662707a9cd54758c9e3aaf52794a91900c484c4a6efa62d90bc719d5e7a345e4192feeb0c9fd11c82570d64677c781e5be1d645556b6aa018e47ec8
 SHA512 (llvm-project-19.1.7.src.tar.xz.sig) = 195797b06ac80a742e0ccbc03a50dc06dd2e04377d783d5474e3e72c5a75203b60292b047929312a411d22b137a239943fba414a4d136a2be14cbff978eb6bda