Adding metadata

18 files changed, 1530 insertions, 0 deletions

diff --git a/llvm-runtimes/compiler-rt-sanitizers/Manifest b/llvm-runtimes/compiler-rt-sanitizers/Manifest
index bdd86faebf45..ddc9c876045c 100644
--- a/llvm-runtimes/compiler-rt-sanitizers/Manifest
+++ b/llvm-runtimes/compiler-rt-sanitizers/Manifest
@@ -19,6 +19,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/compiler-rt-sanitizers/compiler-rt-sanitizers-22.1.0_rc3.ebuild b/llvm-runtimes/compiler-rt-sanitizers/compiler-rt-sanitizers-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..bf2384a48ed6
--- /dev/null
+++ b/llvm-runtimes/compiler-rt-sanitizers/compiler-rt-sanitizers-22.1.0_rc3.ebuild
@@ -0,0 +1,237 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit check-reqs cmake flag-o-matic llvm.org llvm-utils python-any-r1
+
+DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="${LLVM_MAJOR}"
+IUSE="+abi_x86_32 abi_x86_64 +clang +debug test"
+# base targets
+IUSE+=" +ctx-profile +libfuzzer +memprof +orc +profile +xray"
+# sanitizer targets, keep in sync with config-ix.cmake
+# NB: ubsan, scudo deliberately match two entries
+SANITIZER_FLAGS=(
+	asan dfsan lsan msan hwasan tsan ubsan safestack cfi scudo
+	shadowcallstack gwp-asan nsan rtsan
+)
+IUSE+=" ${SANITIZER_FLAGS[@]/#/+}"
+REQUIRED_USE="
+	|| ( ${SANITIZER_FLAGS[*]} libfuzzer orc profile xray )
+	test? (
+		cfi? ( ubsan )
+		gwp-asan? ( scudo )
+	)
+"
+RESTRICT="
+	!clang? ( test )
+	!test? ( test )
+"
+
+DEPEND="
+	llvm-core/llvm:${LLVM_MAJOR}
+	virtual/libcrypt[abi_x86_32(-)?,abi_x86_64(-)?]
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-stdlib-config:${LLVM_MAJOR}
+		llvm-runtimes/compiler-rt:${LLVM_MAJOR}
+	)
+	elibc_glibc? ( net-libs/libtirpc )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=llvm-core/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_TEST_COMPONENTS=(
+	llvm/include/llvm/ProfileData llvm/lib/Testing/Support third-party
+)
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+check_space() {
+	if use test; then
+		local CHECKREQS_DISK_BUILD=11G
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_pretend() {
+	check_space
+}
+
+pkg_setup() {
+	check_space
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	sed -i -e 's:-Werror::' lib/tsan/go/buildgo.sh || die
+
+	# builds freestanding code
+	filter-flags -fstack-protector*
+
+	local flag
+	for flag in "${SANITIZER_FLAGS[@]}"; do
+		if ! use "${flag}"; then
+			local cmake_flag=${flag/-/_}
+			sed -i -e "/COMPILER_RT_HAS_${cmake_flag^^}/s:TRUE:FALSE:" \
+				cmake/config-ix.cmake || die
+		fi
+	done
+
+	# TODO: fix these tests to be skipped upstream
+	if use asan && ! use profile; then
+		rm test/asan/TestCases/asan_and_llvm_coverage_test.cpp || die
+	fi
+	if use ubsan && ! use cfi; then
+		> test/cfi/CMakeLists.txt || die
+	fi
+
+	llvm.org_src_prepare
+}
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/compiler-rt_build
+
+	if use clang; then
+		local -x CC=${CHOST}-clang-${LLVM_MAJOR}
+		local -x CXX=${CHOST}-clang++-${LLVM_MAJOR}
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Use the partial
+		# configuration files that are guaranteed to exist even during initial
+		# installations and upgrades.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,stdlib,linker}.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	local flag want_sanitizer=OFF
+	for flag in "${SANITIZER_FLAGS[@]}"; do
+		if use "${flag}"; then
+			want_sanitizer=ON
+			break
+		fi
+	done
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		# use a build dir structure consistent with install
+		# this makes it possible to easily deploy test-friendly clang
+		-DCOMPILER_RT_OUTPUT_DIR="${BUILD_DIR}/lib/clang/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		# builtins & crt installed by llvm-runtimes/compiler-rt
+		-DCOMPILER_RT_BUILD_BUILTINS=OFF
+		-DCOMPILER_RT_BUILD_CRT=OFF
+		-DCOMPILER_RT_BUILD_CTX_PROFILE=$(usex ctx-profile)
+		-DCOMPILER_RT_BUILD_LIBFUZZER=$(usex libfuzzer)
+		-DCOMPILER_RT_BUILD_MEMPROF=$(usex memprof)
+		-DCOMPILER_RT_BUILD_ORC=$(usex orc)
+		-DCOMPILER_RT_BUILD_PROFILE=$(usex profile)
+		-DCOMPILER_RT_BUILD_SANITIZERS="${want_sanitizer}"
+		-DCOMPILER_RT_BUILD_XRAY=$(usex xray)
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	if use amd64; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			# they are created during src_test()
+			-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+
+		# same flags are passed for build & tests, so we need to strip
+		# them down to a subset supported by clang
+		CC=${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang \
+		CXX=${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++ \
+		strip-unsupported-flags
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
+			# this allows adding arm64 support using SDK in EPREFIX
+			-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
+			# Set version based on the SDK in EPREFIX
+			# This disables i386 for SDK >= 10.15
+			# Will error if has_use tsan and SDK < 10.12
+			-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath "${EPREFIX}/MacOSX.sdk" | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
+			# Use our libtool instead of looking it up with xcrun
+			-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
+		)
+	fi
+
+	cmake_src_configure
+
+	if use test; then
+		local sys_dest=( "${BUILD_DIR}"/lib/clang/${LLVM_MAJOR}/lib/* )
+		[[ ! -e ${sys_dest} ]] && die "Unable to find ${sys_dest}"
+		[[ ${#sys_dest[@]} -ne 1 ]] && die "Non-deterministic compiler-rt install: ${sys_dest[*]}"
+		local sys_dir=( "${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}/lib/${sys_dest##*/}" )
+		[[ ! -e ${sys_dir} ]] && die "${sys_dir} is missing"
+
+		# copy clang over since resource_dir is located relatively to binary
+		# therefore, we can put our new libraries in it
+		mkdir -p "${BUILD_DIR}"/lib/{llvm/${LLVM_MAJOR}/{bin,$(get_libdir)},clang/${LLVM_MAJOR}/include} || die
+		cp "${EPREFIX}"/usr/lib/llvm/${LLVM_MAJOR}/bin/clang{,++} \
+			"${BUILD_DIR}"/lib/llvm/${LLVM_MAJOR}/bin/ || die
+		cp "${EPREFIX}"/usr/lib/clang/${LLVM_MAJOR}/include/*.h \
+			"${BUILD_DIR}"/lib/clang/${LLVM_MAJOR}/include/ || die
+		cp "${sys_dir}"/*builtins*.a "${sys_dest}/" || die
+		# we also need LLVMgold.so for gold-based tests
+		if [[ -f ${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/LLVMgold.so ]]; then
+			ln -s "${EPREFIX}"/usr/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/LLVMgold.so \
+				"${BUILD_DIR}"/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/ || die
+		fi
+	fi
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	# disable sandbox to have it stop clobbering LD_PRELOAD
+	local -x SANDBOX_ON=0
+	# wipe LD_PRELOAD to make ASAN happy
+	local -x LD_PRELOAD=
+
+	cmake_build check-all
+}
diff --git a/llvm-runtimes/compiler-rt/Manifest b/llvm-runtimes/compiler-rt/Manifest
index 580d92801557..4172a3b2c110 100644
--- a/llvm-runtimes/compiler-rt/Manifest
+++ b/llvm-runtimes/compiler-rt/Manifest
@@ -16,6 +16,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/compiler-rt/compiler-rt-22.1.0_rc3.ebuild b/llvm-runtimes/compiler-rt/compiler-rt-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..729cfe098c88
--- /dev/null
+++ b/llvm-runtimes/compiler-rt/compiler-rt-22.1.0_rc3.ebuild
@@ -0,0 +1,190 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake crossdev flag-o-matic llvm.org llvm-utils python-any-r1
+inherit toolchain-funcs
+
+DESCRIPTION="Compiler runtime library for clang (built-in part)"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="${LLVM_MAJOR}"
+IUSE="+abi_x86_32 abi_x86_64 +atomic-builtins +clang +debug test"
+REQUIRED_USE="atomic-builtins? ( clang )"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+DEPEND="
+	llvm-core/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+	)
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=llvm-core/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake third-party/siphash )
+LLVM_TEST_COMPONENTS=( llvm/include/llvm/TargetParser )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+pkg_pretend() {
+	if ! use clang && ! tc-is-clang; then
+		ewarn "Building using a compiler other than clang may result in broken atomics"
+		ewarn "library. Enable USE=clang unless you have a very good reason not to."
+	fi
+}
+
+pkg_setup() {
+	if target_is_not_host || tc-is-cross-compiler ; then
+		# strips vars like CFLAGS="-march=x86_64-v3" for non-x86 architectures
+		CHOST=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+test_compiler() {
+	target_is_not_host && return
+	$(tc-getCC) ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	if use clang || use test; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+	fi
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/${P}_build
+
+	if use clang && ! is_crosspkg; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang-${LLVM_MAJOR}
+			local -x CXX=${CHOST}-clang++-${LLVM_MAJOR}
+		fi
+
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Given that compiler-rt
+		# require runtime, use only the linker configuration.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-linker.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	if ! is_crosspkg && ! test_compiler ; then
+		local nolib_flags=( -nodefaultlibs -lc )
+
+		if test_compiler "${nolib_flags[@]}"; then
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		elif test_compiler "${nolib_flags[@]}" -nostartfiles; then
+			# Avoiding -nostartfiles earlier on for bug #862540,
+			# and set available entry symbol for bug #862798.
+			nolib_flags+=( -nostartfiles -e main )
+
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		fi
+	fi
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_EXCLUDE_ATOMIC_BUILTIN=$(usex !atomic-builtins)
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
+		-DCOMPILER_RT_BUILD_MEMPROF=OFF
+		-DCOMPILER_RT_BUILD_ORC=OFF
+		-DCOMPILER_RT_BUILD_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	if use amd64 && ! target_is_not_host; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if is_crosspkg; then
+		# Needed to target built libc headers
+		export CFLAGS="${CFLAGS} -isystem /usr/${CTARGET}/usr/include"
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+
+			# Without this, compiler-rt install location is not unique
+			# to target triples, only to architecture.
+			# Needed if you want to target multiple libcs for one arch.
+			-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON
+
+			-DCMAKE_ASM_COMPILER_TARGET="${CTARGET}"
+			-DCMAKE_C_COMPILER_TARGET="${CTARGET}"
+			-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON
+		)
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
+			# this allows adding arm64 support using SDK in EPREFIX
+			-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
+			# Set version based on the SDK in EPREFIX.
+			# This disables i386 for SDK >= 10.15
+			-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath "${EPREFIX}/MacOSX.sdk" | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
+			# Use our libtool instead of looking it up with xcrun
+			-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-builtins
+}
diff --git a/llvm-runtimes/flang-rt/Manifest b/llvm-runtimes/flang-rt/Manifest
index 591425a083e7..107ac8c47883 100644
--- a/llvm-runtimes/flang-rt/Manifest
+++ b/llvm-runtimes/flang-rt/Manifest
@@ -4,6 +4,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/flang-rt/flang-rt-22.1.0_rc3.ebuild b/llvm-runtimes/flang-rt/flang-rt-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..dba20d2a1ee9
--- /dev/null
+++ b/llvm-runtimes/flang-rt/flang-rt-22.1.0_rc3.ebuild
@@ -0,0 +1,74 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake flag-o-matic llvm.org python-any-r1
+
+DESCRIPTION="LLVM's Fortran runtime"
+HOMEPAGE="https://flang.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions"
+SLOT="${LLVM_MAJOR}"
+IUSE="+debug test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	!<llvm-core/flang-21.0.0_pre20250221-r1
+"
+BDEPEND="
+	llvm-core/llvm:${LLVM_MAJOR}
+	llvm-core/flang
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=(
+	runtimes flang-rt cmake flang llvm/{cmake,utils/llvm-lit}
+)
+LLVM_TEST_COMPONENTS=( third-party/unittest )
+llvm.org_set_globals
+
+python_check_deps() {
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	use test && python-any-r1_pkg_setup
+}
+
+src_configure() {
+	# the code is not portable
+	local -x FC=flang F77=flang
+	strip-unsupported-flags
+
+	local mycmakeargs=(
+		# we may not have a runtime yet
+		-DCMAKE_Fortran_COMPILER_WORKS=TRUE
+
+		-DLLVM_ENABLE_RUNTIMES="flang-rt"
+		# this package forces NO_DEFAULT_PATHS
+		-DLLVM_BINARY_DIR="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+		# set correct install paths
+		-DFLANG_RT_INSTALL_RESOURCE_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		-DLLVM_DEFAULT_TARGET_TRIPLE="${CHOST}"
+
+		-DFLANG_RT_INCLUDE_TESTS=$(usex test)
+	)
+	use test && mycmakeargs+=(
+		-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+		-DLLVM_LIT_ARGS="$(get_lit_flags)"
+	)
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-flang-rt
+}
diff --git a/llvm-runtimes/libcxx/Manifest b/llvm-runtimes/libcxx/Manifest
index 9511da6edfb5..60068fcae6e7 100644
--- a/llvm-runtimes/libcxx/Manifest
+++ b/llvm-runtimes/libcxx/Manifest
@@ -15,6 +15,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/libcxx/libcxx-22.1.0_rc3.ebuild b/llvm-runtimes/libcxx/libcxx-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..40b8152d5fcd
--- /dev/null
+++ b/llvm-runtimes/libcxx/libcxx-22.1.0_rc3.ebuild
@@ -0,0 +1,266 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake-multilib crossdev flag-o-matic llvm.org llvm-utils
+inherit python-any-r1 toolchain-funcs
+
+DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
+HOMEPAGE="https://libcxx.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="+clang +libcxxabi +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libcxxabi? (
+		~llvm-runtimes/libcxxabi-${PV}[static-libs?,${MULTILIB_USEDEP}]
+	)
+	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
+"
+DEPEND="
+	${RDEPEND}
+	llvm-core/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-unwindlib-config:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		dev-debug/gdb[python]
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=(
+	runtimes libcxx{,abi} libc llvm/{cmake,utils/llvm-lit} cmake
+)
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	python-any-r1_pkg_setup
+
+	if ! use libcxxabi && ! tc-is-gcc ; then
+		eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
+		eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
+		eerror "and try again."
+		die
+	fi
+}
+
+test_compiler() {
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	local install_prefix=${EPREFIX}
+	is_crosspkg && install_prefix+=/usr/${CTARGET}
+
+	# note: we need to do this before multilib kicks in since it will
+	# alter the CHOST
+	local cxxabi cxxabi_incs
+	if use libcxxabi; then
+		cxxabi=system-libcxxabi
+		cxxabi_incs="${install_prefix}/usr/include/c++/v1"
+	else
+		local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
+		cxxabi=libsupc++
+		cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
+	fi
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	# Workaround for bgo #961153.
+	# TODO: Fix the multilib.eclass, so it sets CTARGET properly.
+	if ! is_crosspkg; then
+		export CTARGET=${CHOST}
+	fi
+
+	if use clang; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+		local -x CC=${CTARGET}-clang-${LLVM_MAJOR}
+		local -x CXX=${CTARGET}-clang++-${LLVM_MAJOR}
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Use the partial
+		# configuration of components that libunwind depends on.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,unwindlib,linker}.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	local nostdlib_flags=( -nostdlib++ )
+	if ! test_compiler && test_compiler "${nostdlib_flags[@]}"; then
+		local -x LDFLAGS="${LDFLAGS} ${nort_flags[*]}"
+		ewarn "${CXX} seems to lack runtime, trying with ${nort_flags[*]}"
+	fi
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCMAKE_CXX_COMPILER_TARGET="${CTARGET}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES=libcxx
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
+		-DLIBCXX_CXX_ABI=${cxxabi}
+		-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
+		# we're using our own mechanism for generating linker scripts
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(llvm_cmake_use_musl)
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=$(usex test)
+		-DLIBCXX_INSTALL_MODULES=ON
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+	)
+	if ! has_version -b sys-devel/gcc; then
+		# Since this package is merged before llvm-runtimes/clang-stdlib-config,
+		# clang will attempt to use libstdc++ for the C++ compiler check, and will
+		# fail if it is missing.
+		mycmakeargs+=( -DCMAKE_CXX_COMPILER_WORKS=1 )
+	fi
+	if is_crosspkg; then
+		# Needed to target built libc headers
+		local -x CFLAGS="${CFLAGS} -isystem ${ESYSROOT}/usr/${CTARGET}/usr/include"
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+			# Install inside the cross sysroot.
+			-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/${CTARGET}/usr"
+		)
+	fi
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_src_compile
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		local libdir=$(get_libdir)
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	# https://github.com/llvm/llvm-project/issues/153940
+	local -x LIT_XFAIL="libcxx/gdb/gdb_pretty_printer_test.sh.cpp"
+	cmake_build libcxx-test-suite-install-cxx
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		local libdir=$(get_libdir)
+		cp "${BUILD_DIR}"/{,libcxx/test-suite-install/}"${libdir}"/libc++_shared.so || die
+		if use static-libs; then
+			cp "${BUILD_DIR}"/{,libcxx/test-suite-install/}"${libdir}"/libc++_static.a || die
+		fi
+	fi
+	cmake_build check-cxx
+}
+
+multilib_src_install() {
+	cmake_src_install
+	# since we've replaced libc++.{a,so} with ldscripts, now we have to
+	# install the extra symlinks
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		local libdir=$(get_libdir)
+		is_crosspkg && into /usr/${CTARGET}/usr
+		dolib.so "${libdir}"/libc++_shared.so
+		use static-libs && dolib.a "${libdir}"/libc++_static.a
+	fi
+
+	local install_prefix=
+	is_crosspkg && install_prefix=/usr/${CTARGET}
+	insinto "${install_prefix}/usr/share/libc++/gdb"
+	doins ../libcxx/utils/gdb/libcxx/printers.py
+
+	local lib_version=$(sed -n -e 's/^LIBCXX_LIBRARY_VERSION:STRING=//p' CMakeCache.txt || die)
+	[[ -n ${lib_version} ]] || die "Could not determine LIBCXX_LIBRARY_VERSION from CMakeCache.txt"
+
+	insinto "${install_prefix}/usr/share/gdb/auto-load/usr/$(get_libdir)"
+	newins - "libc++.so.${lib_version}-gdb.py" <<-EOF
+		__import__("sys").path.insert(0, "${EPREFIX}/usr/share/libc++/gdb")
+		__import__("printers").register_libcxx_printer_loader()
+	EOF
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
+	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
+
+	cat <<-END_LDSCRIPT
+/* GNU ld script
+   Include missing dependencies
+*/
+${output_format}
+GROUP ( $@ )
+END_LDSCRIPT
+}
+
+gen_static_ldscript() {
+	# Move it first.
+	mv "${libdir}"/libc++{,_static}.a || die
+	# Generate libc++.a ldscript for inclusion of its dependencies so that
+	# clang++ -stdlib=libc++ -static works out of the box.
+	local deps=(
+		libc++_static.a
+		$(usex libcxxabi libc++abi.a libsupc++.a)
+	)
+	# On Linux/glibc it does not link without libpthread or libdl. It is
+	# fine on FreeBSD.
+	use elibc_glibc && deps+=( libpthread.a libdl.a )
+
+	gen_ldscript "${deps[*]}" > "${libdir}"/libc++.a || die
+}
+
+gen_shared_ldscript() {
+	# Move it first.
+	mv "${libdir}"/libc++{,_shared}.so || die
+	local deps=(
+		libc++_shared.so
+		# libsupc++ doesn't have a shared version
+		$(usex libcxxabi libc++abi.so libsupc++.a)
+	)
+
+	gen_ldscript "${deps[*]}" > "${libdir}"/libc++.so || die
+}
diff --git a/llvm-runtimes/libcxxabi/Manifest b/llvm-runtimes/libcxxabi/Manifest
index 69b990500c85..1ecc92e6d0dc 100644
--- a/llvm-runtimes/libcxxabi/Manifest
+++ b/llvm-runtimes/libcxxabi/Manifest
@@ -14,6 +14,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/libcxxabi/libcxxabi-22.1.0_rc3.ebuild b/llvm-runtimes/libcxxabi/libcxxabi-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..0d906a30a026
--- /dev/null
+++ b/llvm-runtimes/libcxxabi/libcxxabi-22.1.0_rc3.ebuild
@@ -0,0 +1,148 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake-multilib crossdev flag-o-matic llvm.org llvm-utils
+inherit python-any-r1 toolchain-funcs
+
+DESCRIPTION="Low level support for a standard C++ library"
+HOMEPAGE="https://libcxxabi.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="+clang +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+DEPEND="
+	${RDEPEND}
+	llvm-core/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-unwindlib-config:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libcxx{abi,} llvm/cmake cmake )
+LLVM_TEST_COMPONENTS=(
+	libc llvm/include/llvm/{Demangle,Testing} llvm/utils/llvm-lit
+)
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+test_compiler() {
+	target_is_not_host && return
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+multilib_src_configure() {
+	# Workaround for bgo #961153.
+	# TODO: Fix the multilib.eclass, so it sets CTARGET properly.
+	if ! is_crosspkg; then
+		export CTARGET=${CHOST}
+	fi
+
+	if use clang; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+		local -x CC=${CTARGET}-clang-${LLVM_MAJOR}
+		local -x CXX=${CTARGET}-clang++-${LLVM_MAJOR}
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Use the partial
+		# configuration of components that libunwind depends on.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,unwindlib,linker}.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	local nostdlib_flags=( -nostdlib++ )
+	if ! test_compiler && test_compiler "${nostdlib_flags[@]}"; then
+		local -x LDFLAGS="${LDFLAGS} ${nostdlib_flags[*]}"
+		ewarn "${CXX} seems to lack stdlib, trying with ${nostdlib_flags[*]}"
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCMAKE_CXX_COMPILER_TARGET="${CTARGET}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES="libcxxabi;libcxx"
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLIBCXXABI_ENABLE_SHARED=ON
+		-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)
+		-DLIBCXXABI_INCLUDE_TESTS=$(usex test)
+		-DLIBCXXABI_USE_COMPILER_RT=${use_compiler_rt}
+
+		# upstream is omitting standard search path for this
+		# probably because gcc & clang are bundling their own unwind.h
+		-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=OFF
+		-DLIBCXX_CXX_ABI=libcxxabi
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(llvm_cmake_use_musl)
+		-DLIBCXX_HAS_GCC_S_LIB=OFF
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=OFF
+	)
+	if is_crosspkg; then
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+			# Install inside the cross sysroot.
+			-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/${CTARGET}/usr"
+		)
+	fi
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_build cxxabi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-cxxabi
+}
+
+multilib_src_install() {
+	DESTDIR="${D}" cmake_build install-cxxabi
+}
diff --git a/llvm-runtimes/libgcc/Manifest b/llvm-runtimes/libgcc/Manifest
index b3df0785eabb..bc2cb56d22ee 100644
--- a/llvm-runtimes/libgcc/Manifest
+++ b/llvm-runtimes/libgcc/Manifest
@@ -8,6 +8,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/libgcc/libgcc-22.1.0_rc3.ebuild b/llvm-runtimes/libgcc/libgcc-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..514340a20c64
--- /dev/null
+++ b/llvm-runtimes/libgcc/libgcc-22.1.0_rc3.ebuild
@@ -0,0 +1,173 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+
+inherit cmake crossdev flag-o-matic llvm.org llvm-utils python-any-r1
+inherit toolchain-funcs
+
+DESCRIPTION="Compiler runtime library for clang, compatible with libgcc_s"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="debug test"
+
+DEPEND="
+	~llvm-runtimes/libunwind-${PV}[static-libs]
+"
+RDEPEND="
+	${DEPEND}
+	!sys-devel/gcc
+"
+BDEPEND="
+	llvm-core/clang:${LLVM_MAJOR}
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=llvm-core/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake llvm-libgcc third-party/siphash )
+LLVM_TEST_COMPONENTS=( llvm/include/llvm/TargetParser )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	if target_is_not_host || tc-is-cross-compiler ; then
+		# strips vars like CFLAGS="-march=x86_64-v3" for non-x86 architectures
+		CHOST=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+src_configure() {
+	# We need to build a separate copy of compiler-rt, because we need to disable the
+	# COMPILER_RT_BUILTINS_HIDE_SYMBOLS option - compatibility with libgcc requires
+	# visibility of all symbols.
+
+	llvm_prepend_path -b "${LLVM_MAJOR}"
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	export CC=${CTARGET}-clang CXX=${CTARGET}-clang++
+	strip-unsupported-flags
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		-DCOMPILER_RT_BUILD_CRT=OFF
+		-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
+		-DCOMPILER_RT_BUILD_MEMPROF=OFF
+		-DCOMPILER_RT_BUILD_ORC=OFF
+		-DCOMPILER_RT_BUILD_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+
+		-DCOMPILER_RT_BUILTINS_HIDE_SYMBOLS=OFF
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	# disable building non-native runtimes since we don't do multilib
+	if use amd64; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=OFF
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
+	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
+
+	cat <<-END_LDSCRIPT
+/* GNU ld script
+   Include missing dependencies
+*/
+${output_format}
+GROUP ( $@ )
+END_LDSCRIPT
+}
+
+src_compile() {
+	cmake_src_compile
+
+	local rtlib=$(
+		"${CC}" -rtlib=compiler-rt -resource-dir="${BUILD_DIR}" \
+			-print-libgcc-file-name || die
+	)
+
+	# Use the llvm-libgcc's version script to produce libgcc.{a,so}, which
+	# combines compiler-rt and libunwind into a libgcc replacement.
+	#
+	# What we do here is similar to what upstream does[0], with the following
+	# differences:
+	#
+	# * We build the local copy of compiler-rt manually, to have a full control
+	#   over CMake options.
+	# * Upstream links the locally built copy of libunwind statically. We link the
+	#   system-wide libunwind dynamically.
+	#
+	# [0] https://github.com/llvm/llvm-project/blob/llvmorg-19.1.7/llvm-libgcc/CMakeLists.txt#L102-L120
+	"${CC}" -E -xc \
+		"${WORKDIR}/llvm-libgcc/gcc_s.ver.in" \
+		-o gcc_s.ver || die
+	"${CC}" -nostdlib \
+		${LDFLAGS} \
+		-Wl,--version-script,gcc_s.ver \
+		-Wl,--undefined-version \
+		-Wl,--whole-archive \
+		"${rtlib}" \
+		-Wl,-soname,libgcc_s.so.1.0 \
+		-lc -lunwind -shared \
+		-o libgcc_s.so.1.0 || die
+	# Generate libgcc_s.so ldscript for inclusion of libunwind as a
+	# dependency so that `clang -lgcc_s` works out of the box.
+	gen_ldscript libgcc_s.so.1.0 libunwind.so.1.0 > libgcc_s.so || die
+	cp "${rtlib}" libgcc.a || die
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-builtins
+}
+
+src_install() {
+	local libdir=$(get_libdir)
+	dolib.so libgcc_s.so.1.0 libgcc_s.so
+	dolib.a libgcc.a
+	dosym libgcc_s.so.1.0 "/usr/${libdir}/libgcc_s.so.1"
+	dosym libunwind.a "/usr/${libdir}/libgcc_eh.a"
+}
diff --git a/llvm-runtimes/libunwind/Manifest b/llvm-runtimes/libunwind/Manifest
index 69b990500c85..1ecc92e6d0dc 100644
--- a/llvm-runtimes/libunwind/Manifest
+++ b/llvm-runtimes/libunwind/Manifest
@@ -14,6 +14,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/libunwind/libunwind-22.1.0_rc3.ebuild b/llvm-runtimes/libunwind/libunwind-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..79424e8f2afc
--- /dev/null
+++ b/llvm-runtimes/libunwind/libunwind-22.1.0_rc3.ebuild
@@ -0,0 +1,193 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake-multilib crossdev flag-o-matic llvm.org llvm-utils
+inherit python-any-r1 toolchain-funcs
+
+DESCRIPTION="C++ runtime stack unwinder from LLVM"
+HOMEPAGE="https://llvm.org/docs/ExceptionHandling.html"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+IUSE="+clang +debug static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	!sys-libs/libunwind
+"
+DEPEND="
+	llvm-core/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		llvm-core/clang:${LLVM_MAJOR}
+		llvm-core/clang-linker-config:${LLVM_MAJOR}
+		llvm-runtimes/clang-rtlib-config:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libunwind libcxx llvm/cmake cmake )
+LLVM_TEST_COMPONENTS=( libc libcxxabi llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+test_compiler() {
+	target_is_not_host && return
+	local compiler=${1}
+	shift
+	${compiler} ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+multilib_src_configure() {
+	if use clang; then
+		llvm_prepend_path -b "${LLVM_MAJOR}"
+	fi
+
+	local libdir=$(get_libdir)
+
+	# https://github.com/llvm/llvm-project/issues/56825
+	# also separately bug #863917
+	filter-lto
+
+	# Workaround for bgo #961153.
+	# TODO: Fix the multilib.eclass, so it sets CTARGET properly.
+	if ! is_crosspkg; then
+		export CTARGET=${CHOST}
+	fi
+
+	if use clang; then
+		local -x CC=${CTARGET}-clang-${LLVM_MAJOR}
+		local -x CXX=${CTARGET}-clang++-${LLVM_MAJOR}
+		strip-unsupported-flags
+
+		# The full clang configuration might not be ready yet. Use the partial
+		# configuration files that are guaranteed to exist even during initial
+		# installations and upgrades.
+		local flags=(
+			--config="${ESYSROOT}"/etc/clang/"${LLVM_MAJOR}"/gentoo-{rtlib,linker}.cfg
+		)
+		local -x CFLAGS="${CFLAGS} ${flags[@]}"
+		local -x CXXFLAGS="${CXXFLAGS} ${flags[@]}"
+		local -x LDFLAGS="${LDFLAGS} ${flags[@]}"
+	fi
+
+	# Check whether C compiler runtime is available.
+	if ! test_compiler "$(tc-getCC)"; then
+		local nolib_flags=( -nodefaultlibs -lc )
+		if test_compiler "$(tc-getCC)" "${nolib_flags[@]}"; then
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		elif test_compiler "$(tc-getCC)" "${nolib_flags[@]}" -nostartfiles; then
+			# Avoiding -nostartfiles earlier on for bug #862540,
+			# and set available entry symbol for bug #862798.
+			nolib_flags+=( -nostartfiles -e main )
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		fi
+	fi
+	# Check whether C++ standard library is available,
+	local nostdlib_flags=( -nostdlib++ )
+	if ! test_compiler "$(tc-getCXX)" &&
+		test_compiler "$(tc-getCXX)" "${nostdlib_flags[@]}"
+	then
+		local -x LDFLAGS="${LDFLAGS} ${nostdlib_flags[*]}"
+		ewarn "${CXX} seems to lack runtime, trying with ${nostdlib_flags[*]}"
+	fi
+
+	# link to compiler-rt
+	# https://github.com/gentoo/gentoo/pull/21516
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	# Respect upstream build type assumptions (bug #910436) where they do:
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=ON =>
+	#       -DCMAKE_BUILD_TYPE=DEBUG  => -UNDEBUG
+	#       -DCMAKE_BUILD_TYPE!=debug => -DNDEBUG
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=OFF =>
+	#       -UNDEBUG
+	# See also https://github.com/llvm/llvm-project/issues/86#issuecomment-1649668826.
+	use debug || append-cppflags -DNDEBUG
+
+	local mycmakeargs=(
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DCMAKE_C_COMPILER_TARGET="${CTARGET}"
+		-DCMAKE_CXX_COMPILER_TARGET="${CTARGET}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES="libunwind"
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLIBUNWIND_ENABLE_ASSERTIONS=$(usex debug)
+		-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)
+		-DLIBUNWIND_INCLUDE_TESTS=$(usex test)
+		-DLIBUNWIND_INSTALL_HEADERS=ON
+
+		# cross-unwinding increases unwinding footprint (to account
+		# for the worst case) and causes some breakage on AArch64
+		# https://github.com/llvm/llvm-project/issues/152549
+		-DLIBUNWIND_ENABLE_CROSS_UNWINDING=OFF
+
+		# avoid dependency on libgcc_s if compiler-rt is used
+		-DLIBUNWIND_USE_COMPILER_RT=${use_compiler_rt}
+	)
+	if is_crosspkg; then
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+			# Install inside the cross sysroot.
+			-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/${CTARGET}/usr"
+		)
+	fi
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_ENABLE_RUNTIMES="libunwind;libcxxabi;libcxx"
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DLIBUNWIND_LIBCXX_PATH="${WORKDIR}/libcxx"
+
+			-DLIBCXXABI_LIBDIR_SUFFIX=
+			-DLIBCXXABI_ENABLE_SHARED=OFF
+			-DLIBCXXABI_ENABLE_STATIC=ON
+			-DLIBCXXABI_USE_LLVM_UNWINDER=ON
+			-DLIBCXXABI_INCLUDE_TESTS=OFF
+
+			-DLIBCXX_LIBDIR_SUFFIX=
+			-DLIBCXX_ENABLE_SHARED=OFF
+			-DLIBCXX_ENABLE_STATIC=ON
+			-DLIBCXX_CXX_ABI=libcxxabi
+			-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+			-DLIBCXX_HAS_MUSL_LIBC=$(llvm_cmake_use_musl)
+			-DLIBCXX_HAS_GCC_S_LIB=OFF
+			-DLIBCXX_INCLUDE_TESTS=OFF
+			-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		)
+	fi
+
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-unwind
+}
+
+multilib_src_install() {
+	DESTDIR=${D} cmake_build install-unwind
+}
diff --git a/llvm-runtimes/offload/Manifest b/llvm-runtimes/offload/Manifest
index b3df0785eabb..bc2cb56d22ee 100644
--- a/llvm-runtimes/offload/Manifest
+++ b/llvm-runtimes/offload/Manifest
@@ -8,6 +8,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/offload/offload-22.1.0_rc3.ebuild b/llvm-runtimes/offload/offload-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..863fa9aee362
--- /dev/null
+++ b/llvm-runtimes/offload/offload-22.1.0_rc3.ebuild
@@ -0,0 +1,138 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit cmake crossdev flag-o-matic llvm.org python-any-r1
+inherit toolchain-funcs
+
+DESCRIPTION="OpenMP offloading support"
+HOMEPAGE="https://openmp.llvm.org"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0/${LLVM_SOABI}"
+IUSE="+clang +debug ompt test llvm_targets_AMDGPU llvm_targets_NVPTX"
+REQUIRED_USE="
+	llvm_targets_AMDGPU? ( clang )
+	llvm_targets_NVPTX? ( clang )
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	dev-libs/libffi:=
+	~llvm-core/llvm-${PV}
+	~llvm-runtimes/openmp-${PV}[ompt?]
+	llvm_targets_AMDGPU? ( dev-libs/rocr-runtime:= )
+"
+DEPEND="
+	${RDEPEND}
+"
+# tests:
+# - dev-python/lit provides the test runner
+# - llvm-core/llvm provide test utils (e.g. FileCheck)
+# - llvm-core/clang provides the compiler to run tests
+BDEPEND="
+	dev-lang/perl
+	virtual/pkgconfig
+	clang? ( llvm-core/clang )
+	llvm_targets_AMDGPU? ( llvm-core/clang[llvm_targets_AMDGPU] )
+	llvm_targets_NVPTX? ( llvm-core/clang[llvm_targets_NVPTX] )
+	test? (
+		$(python_gen_any_dep '
+			dev-python/lit[${PYTHON_USEDEP}]
+		')
+		llvm-core/clang
+	)
+"
+
+LLVM_COMPONENTS=( runtimes offload cmake libc llvm/{cmake,utils/llvm-lit} )
+LLVM_TEST_COMPONENTS=( openmp/cmake )
+llvm.org_set_globals
+
+pkg_pretend() {
+	if [[ ${LLVM_ALLOW_GPU_TESTING} ]]; then
+		ewarn "LLVM_ALLOW_GPU_TESTING set.  This package will run tests against your"
+		ewarn "GPU if it is supported.  Note that these tests may be flaky, fail or"
+		ewarn "hang, or even cause your GPU to crash (requiring a reboot)."
+	fi
+}
+
+python_check_deps() {
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	if use test; then
+		python-any-r1_pkg_setup
+	fi
+}
+
+src_configure() {
+	if use clang && ! is_crosspkg; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang
+			local -x CXX=${CHOST}-clang++
+		fi
+
+		strip-unsupported-flags
+	fi
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(get_libdir)"
+	local ffi_cflags=$($(tc-getPKG_CONFIG) --cflags-only-I libffi)
+	local ffi_ldflags=$($(tc-getPKG_CONFIG) --libs-only-L libffi)
+	local plugins="host"
+
+	if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
+		if use llvm_targets_AMDGPU; then
+			plugins+=";amdgpu"
+		fi
+		if use llvm_targets_NVPTX; then
+			plugins+=";cuda"
+		fi
+	fi
+
+	local mycmakeargs=(
+		-DLLVM_ENABLE_RUNTIMES=offload
+		-DOPENMP_STANDALONE_BUILD=ON
+		-DOFFLOAD_LIBDIR_SUFFIX="${libdir#lib}"
+		-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
+
+		-DOFFLOAD_INCLUDE_TESTS=$(usex test)
+		-DLIBOMPTARGET_PLUGINS_TO_BUILD="${plugins}"
+		-DLIBOMPTARGET_OMPT_SUPPORT="$(usex ompt)"
+
+		# this breaks building static target libs
+		-DBUILD_SHARED_LIBS=OFF
+	)
+
+	[[ ! ${LLVM_ALLOW_GPU_TESTING} ]] && mycmakeargs+=(
+		# prevent trying to access the GPU
+		-DLIBOMPTARGET_AMDGPU_ARCH=LIBOMPTARGET_AMDGPU_ARCH-NOTFOUND
+		-DLIBOMPTARGET_NVPTX_ARCH=LIBOMPTARGET_NVPTX_ARCH-NOTFOUND
+	)
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+		# requires flang
+		-DOPENMP_TEST_Fortran_COMPILER=
+	)
+
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-offload check-offload-unit
+}
diff --git a/llvm-runtimes/openmp/Manifest b/llvm-runtimes/openmp/Manifest
index 69b990500c85..1ecc92e6d0dc 100644
--- a/llvm-runtimes/openmp/Manifest
+++ b/llvm-runtimes/openmp/Manifest
@@ -14,6 +14,8 @@ DIST llvm-project-22.1.0-rc1.src.tar.xz 166976000 BLAKE2B eec2cf8822aa6937c751d9
 DIST llvm-project-22.1.0-rc1.src.tar.xz.sig 119 BLAKE2B e3d5a6c00d7960b0694919ff083e02f0273e97da6a40ad452fbb8261b9edfc52d4262733d82a59f03ad7d15b3b62de743b37a1b2e191417443ecb730520be376 SHA512 51326b9402d7719c491ac5c6ab80a678896743dd88e3f997245adb77e7b3f5e0f84f6389c75872aea268de8a7a049684c84cdf575c1f19c4971bb280a9374de6
 DIST llvm-project-22.1.0-rc2.src.tar.xz 166979860 BLAKE2B d4d58b2615ce596f97ad743ba43a774a7b1e69f8aa394411cfdfdae6abf76ef23c9f483a8db590eac6012a965dbe720111c3c779cf20d1483bd216a3fe5111a0 SHA512 2690f582950a2b8b4dccfce849080b841b34068bbd07acd25ae7d18ef0bc6919f83cd57edda8b90a00327b73aa5cb3411d413ea800247cf541c89143ca26ef98
 DIST llvm-project-22.1.0-rc2.src.tar.xz.sig 119 BLAKE2B 797d0fb36d5ff979504bf094c574ab6473d6d428b0ee0f80c95f6b700c534b8d390f0685e01bd9681fd0b33c0fe39af2d6a8b79372d05af1d87b0a602ba7ff2f SHA512 619a9ef733d7f89ed1e7564d027b4d1ad714dbe7912cd7ff258436e9ee6b878cc806d2856f00b600f982a472644cd9ba54739f8d034f5b5033c1036fcddf9a09
+DIST llvm-project-22.1.0-rc3.src.tar.xz 167027608 BLAKE2B 30076ce497a4222ce05849f08742a3a62e5f074453e3a2707fe0bda3b956720897e5c3733869d720c7e51a6c5a16b09dff65fb92d6afa09ba1b0ea2ff75530ee SHA512 65c065167de616e650c2f985f165627698dae7706e032018094d7f6b86a305a40c6f244db3a85c4a455fd26323589594f6ddb4bf677912f22891cddaed7c6d26
+DIST llvm-project-22.1.0-rc3.src.tar.xz.sig 119 BLAKE2B 393e41e0970847f30b484333123e7e5a0ac8a7fd70d15895d8bd82c02f75331646d6921da875db0aa0b7420a6fe2ec632c0e08b931424517e981254238c21e45 SHA512 cbc82d1736a6b481b1894047128699cc8e52bc2322e6b655158775c6da4225a36fcbfaad37fbebb890c1d3e170f4aec1d4ee434bc4454475a799701652744111
 DIST llvm-project-424bebd9c784b8490e63290feeeceb42dfdaeb49.tar.gz 259881041 BLAKE2B 3ad34527e65de98be5153d97c7604e0aa8187907f0361bcdf98d37eceaad3a2f152243f5a89ba65f76aba83a69ad3b51f98832095caa7845e7dd5d369611405e SHA512 023581069f5b1f29e1160567df5e365addcf3763829562f7b751d44e0bb0c7adb962101967ae69b2b6a01680af8c833077cd04285727f5fb0292ee7fc61789fc
 DIST llvm-project-8d2078332c23b10dcf3571adc1a186e5c65f82df.tar.gz 261730510 BLAKE2B 89d2208b2daf0f1a8849d9dc44992b5ce27c716a6818682aa5087f6c1455af73ffda87227b0e7e1fa960721dbc706560b8216a1e575ffbb932c5f5019a37ed01 SHA512 7a23d37bf312ae75bbcdbd812737324a6d45a413aab14d32d8a896d0df35e4f008d315092050ee81033bdc3525a5a9dbc197328f75ad792c51084ebb9684cba8
 DIST llvm-project-9eaa1ff11ccde52f2e3bf86f253b6b646548c7cc.tar.gz 259436517 BLAKE2B effc5d342ef8440834d03ca7f9d56dc9f5a0aaa10f62aa81fb3d468cfcd0f28a41b343dc12d91e087a5e509a8bb6aa00b477582f42b87efbf22ea580b48a981e SHA512 fda87f688a8a3626c3b025d2a783d7deb0c64ae83cb9c9c89adb73eba764435981545844eb654d7094361fb3786ea955101ba261f0e4af5ee4beffdd9c2449d7
diff --git a/llvm-runtimes/openmp/openmp-22.1.0_rc3.ebuild b/llvm-runtimes/openmp/openmp-22.1.0_rc3.ebuild
new file mode 100644
index 000000000000..d80045a3c871
--- /dev/null
+++ b/llvm-runtimes/openmp/openmp-22.1.0_rc3.ebuild
@@ -0,0 +1,93 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..14} )
+inherit flag-o-matic cmake-multilib linux-info llvm.org python-single-r1
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0/${LLVM_SOABI}"
+IUSE="+debug gdb-plugin hwloc ompt test"
+REQUIRED_USE="
+	gdb-plugin? ( ${PYTHON_REQUIRED_USE} )
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	gdb-plugin? ( ${PYTHON_DEPS} )
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+"
+# tests:
+# - dev-python/lit provides the test runner
+# - llvm-core/llvm provide test utils (e.g. FileCheck)
+# - llvm-core/clang provides the compiler to run tests
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	dev-lang/perl
+	test? (
+		${PYTHON_DEPS}
+		$(python_gen_cond_dep '
+			dev-python/lit[${PYTHON_USEDEP}]
+		')
+		llvm-core/clang
+	)
+"
+
+LLVM_COMPONENTS=( runtimes openmp cmake llvm/{cmake,include,utils/llvm-lit} )
+llvm.org_set_globals
+
+pkg_setup() {
+	if use gdb-plugin || use test; then
+		python-single-r1_pkg_setup
+	fi
+}
+
+multilib_src_configure() {
+	# LTO causes issues in other packages building, #870127
+	filter-lto
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(get_libdir)"
+	local mycmakeargs=(
+		-DLLVM_ENABLE_RUNTIMES=openmp
+		-DOPENMP_STANDALONE_BUILD=ON
+		-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+		-DLIBOMP_USE_HWLOC=$(usex hwloc)
+		-DLIBOMP_OMPD_GDB_SUPPORT=$(multilib_native_usex gdb-plugin)
+		-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+	)
+
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+		# disable Fortran tests for now
+		# (TODO: enable where we have flang keyworded)
+		-DOPENMP_TEST_Fortran_COMPILER=
+	)
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-openmp
+}