diff --git a/.packit.yml b/.packit.yml
index 1d2848054..97d6d279e 100644
--- a/.packit.yml
+++ b/.packit.yml
@@ -18,6 +18,7 @@ jobs:
     # Note that we keep the Fedora rawhide. See the `.packit/README.md` -
     # "Motivation and context" for details.
     targets:
+      - fedora-rawhide-i386
       - fedora-rawhide-x86_64
       - fedora-rawhide-aarch64
       - fedora-rawhide-ppc64le
diff --git a/.packit/ci.sh b/.packit/ci.sh
index e237edad6..0e165026e 100755
--- a/.packit/ci.sh
+++ b/.packit/ci.sh
@@ -90,7 +90,7 @@ cat /proc/meminfo
 PATH="${PATH}:${HOME}/.local/bin"
 
 # Install additional packages.
-pip3 install meson==0.55.1
+pip3 install -U meson
 
 # Run test.
 
@@ -108,11 +108,11 @@ IGNORE_EXIT_STATUS=
 #            If the test passes unexpectedly, it fails as exit status non-zero.
 #
 # Set the default behavior for each test.
-MATRIX_DEFAULT_GCC_DEFAULT="include"
+MATRIX_DEFAULT_GCC_DEFAULT="exclude"
 MATRIX_DEFAULT_GCC_O2="include"
 MATRIX_DEFAULT_GCC_RPM="exclude"
 MATRIX_DEFAULT_CLANG_DEFAULT="exclude"
-MATRIX_DEFAULT_CLANG_O2="exclude"
+MATRIX_DEFAULT_CLANG_O2="include"
 MATRIX_DEFAULT_CLANG_RPM="exclude"
 # Set the CPU specific behavior for each test optionally.
 # This configuration is prioritized than the default behavior.
@@ -153,6 +153,7 @@ result_gcc="${result_buf}"
 
 echo "== Tests on clang in a default status =="
 if ! BUILD_DIR="build/clang" CC="clang" CXX="clang++" \
+  CFLAGS="--rtlib=compiler-rt" CXXFLAGS="--rtlib=compiler-rt" \
   _run_test_and_get_result "${TEST_COND_CLANG_DEFAULT}"; then
   exit_status=1
 fi
@@ -168,7 +169,7 @@ result_gcc_O2="${result_buf}"
 
 echo "== Tests on clang with O2 flag =="
 if ! BUILD_DIR="build/clang-O2" CC="clang" CXX="clang++" \
-  CFLAGS="-O2" CXXFLAGS="-O2" \
+  CFLAGS="--rtlib=compiler-rt -O2" CXXFLAGS="--rtlib=compiler-rt -O2" \
   _run_test_and_get_result "${TEST_COND_CLANG_O2}"; then
   exit_status=1
 fi
diff --git a/.packit/simde.spec b/.packit/simde.spec
index cefd13953..a30b39ccd 100644
--- a/.packit/simde.spec
+++ b/.packit/simde.spec
@@ -20,6 +20,7 @@ Source1: ci.sh
 # List up the needed RPM package names to test here.
 # clang, clang++
 BuildRequires: clang
+BuildRequires: compiler-rt
 BuildRequires: gcc
 # g++
 BuildRequires: gcc-c++
diff --git a/simde/arm/neon/qdmulh.h b/simde/arm/neon/qdmulh.h
index 40d187cd9..1e879dca9 100644
--- a/simde/arm/neon/qdmulh.h
+++ b/simde/arm/neon/qdmulh.h
@@ -64,7 +64,7 @@ simde_vqdmulh_s16(simde_int16x4_t a, simde_int16x4_t b) {
   #else
     simde_int16x4_private r_;
 
-    #if HEDLEY_HAS_BUILTIN(__builtin_shufflevector) && !(HEDLEY_GCC_VERSION_CHECK(12,1,0) && defined(SIMDE_ARCH_ZARCH))
+    #if HEDLEY_HAS_BUILTIN(__builtin_shufflevector) && !defined(SIMDE_ARCH_ZARCH)
       simde_int16x8_private tmp_ =
         simde_int16x8_to_private(
           simde_vreinterpretq_s16_s32(
@@ -113,7 +113,7 @@ simde_vqdmulh_s32(simde_int32x2_t a, simde_int32x2_t b) {
   #else
     simde_int32x2_private r_;
 
-    #if HEDLEY_HAS_BUILTIN(__builtin_shufflevector) && !(HEDLEY_GCC_VERSION_CHECK(12,1,0) && defined(SIMDE_ARCH_ZARCH))
+    #if HEDLEY_HAS_BUILTIN(__builtin_shufflevector) && !defined(SIMDE_ARCH_ZARCH)
       simde_int32x4_private tmp_ =
         simde_int32x4_to_private(
           simde_vreinterpretq_s32_s64(