bootstrap/llvm16: New package

11 files changed, 960 insertions, 0 deletions

diff --git a/bootstrap/llvm16/APKBUILD b/bootstrap/llvm16/APKBUILD
new file mode 100644
index 000000000..2562db7a6
--- /dev/null
+++ b/bootstrap/llvm16/APKBUILD
@@ -0,0 +1,256 @@
+# Contributor: Travis Tilley <ttilley@gmail.com>
+# Contributor: Mitch Tishmack <mitch.tishmack@gmail.com>
+# Contributor: Jakub Jirutka <jakub@jirutka.cz>
+# Maintainer: A. Wilcox <awilfox@adelielinux.org>
+_pkgname=llvm
+pkgver=16.0.6
+_majorver=${pkgver%%.*}
+pkgname=$_pkgname$_majorver
+pkgrel=0
+pkgdesc="Low Level Virtual Machine compiler system, version $_majorver"
+url="https://llvm.org/"
+arch="all"
+options="!checkroot !dbg"
+license="NCSA AND (Apache-2.0 WITH LLVM-exception)"
+depends=""
+depends_dev="$pkgname=$pkgver-r$pkgrel libexecinfo-dev libxml2-dev"
+checkdepends="cmd:which"
+makedepends="binutils-dev chelf chrpath cmake file libexecinfo-dev libffi-dev
+	libxml2-dev python3 zlib-dev"
+subpackages="$pkgname-static $pkgname-libs $pkgname-dev
+	$pkgname-test-utils:_test_utils"
+source="https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/llvm-project-$pkgver.src.tar.xz
+	llvm-fix-build-with-musl-libc.patch
+	disable-FileSystemTest.CreateDir-perms-assert.patch
+	dyld-elf-ppc32.patch
+	exegesis-mcjit.patch
+	hexagon.patch
+	macho32.patch
+	musl-ppc64-elfv2.patch
+	python3-test.patch
+	roundeven.patch
+	"
+builddir="$srcdir/$_pkgname-project-$pkgver.src/llvm"
+
+# ARM has few failures in test suite that we don't care about currently and
+# also it takes forever to run them on the builder.
+case "$CARCH" in
+	arm*) options="$options !check";;
+esac
+
+# Whether is this package the default (latest) LLVM version.
+_default_llvm="no"
+
+if [ "$_default_llvm" = yes ]; then
+	provides="llvm=$pkgver-r$pkgrel"
+	replaces="llvm"
+fi
+
+# NOTE: It seems that there's no (sane) way how to change includedir, sharedir
+# etc. separately, just the CMAKE_INSTALL_PREFIX. Standard CMake variables and
+# even  LLVM-specific variables, that are related to these paths, actually
+# don't work (in llvm 3.7).
+#
+# When building a software that depends on LLVM, utility llvm-config should be
+# used to discover where is LLVM installed. It provides options to print
+# path of bindir, includedir, and libdir separately, but in its source, all
+# these paths are actually hard-coded against INSTALL_PREFIX. We can patch it
+# and move paths manually, but I'm really not sure what it may break...
+#
+# Also note that we should *not* add version suffix to files in llvm bindir!
+# It breaks build system of some software that depends on LLVM, because they
+# don't expect these files to have a sufix.
+#
+# So, we install all the LLVM files into /usr/lib/llvm$_majorver.
+# BTW, Fedora and Debian do the same thing.
+#
+_prefix="usr/lib/llvm$_majorver"
+
+prepare() {
+	default_prepare
+
+	# https://bugs.llvm.org//show_bug.cgi?id=31870
+	rm test/tools/llvm-symbolizer/print_context.c
+
+	case $CARCH in
+	pmmx|x86|ppc|armhf|armv7)
+		# Appears to not work when building 32-bit code on 64-bit host.
+		rm test/tools/llvm-size/radix.test;;
+	esac
+
+	# appears to be an issue on musl and glibc, but only fails on musl:
+	# https://github.com/NixOS/nixpkgs/blob/bb7e9e46/pkgs/development/compilers/llvm/8/llvm.nix#L74
+	rm -f test/CodeGen/AArch64/wineh4.mir
+
+	#1053
+	rm -fr \
+		test/tools/UpdateTestChecks \
+		test/ExecutionEngine/MCJIT/load-object-a.ll \
+		;
+}
+
+build() {
+	# Auto-detect it by guessing either.
+	ffi_include_dir="$(pkg-config --cflags-only-I libffi | sed 's|^-I||g')"
+
+	# Disabled m68k because the endianness fix from llvm18 doesn't work.
+	cmake -G "Unix Makefiles" -Wno-dev \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_INSTALL_PREFIX=/$_prefix \
+		-DCMAKE_VERBOSE_MAKEFILE=NO \
+		-DFFI_INCLUDE_DIR="$ffi_include_dir" \
+		-DLLVM_BINUTILS_INCDIR=/usr/include \
+		-DLLVM_BUILD_DOCS=OFF \
+		-DLLVM_BUILD_EXAMPLES=OFF \
+		-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON \
+		-DLLVM_BUILD_LLVM_DYLIB=ON \
+		-DLLVM_BUILD_TESTS=ON \
+		-DLLVM_DEFAULT_TARGET_TRIPLE="$CBUILD" \
+		-DLLVM_ENABLE_ASSERTIONS=OFF \
+		-DLLVM_ENABLE_FFI=ON \
+		-DLLVM_ENABLE_LIBCXX=OFF \
+		-DLLVM_ENABLE_PIC=ON \
+		-DLLVM_ENABLE_RTTI=ON \
+		-DLLVM_ENABLE_SPHINX=OFF \
+		-DLLVM_ENABLE_TERMINFO=ON \
+		-DLLVM_ENABLE_ZLIB=ON \
+		-DLLVM_HOST_TRIPLE="$CHOST" \
+		-DLLVM_INCLUDE_BENCHMARKS=OFF \
+		-DLLVM_INCLUDE_EXAMPLES=OFF \
+		-DLLVM_INSTALL_UTILS=ON \
+		-DLLVM_LINK_LLVM_DYLIB=ON \
+		-DLLVM_TARGETS_TO_BUILD='AArch64;AMDGPU;ARM;BPF;Hexagon;Lanai;Mips;MSP430;PowerPC;RISCV;Sparc;SystemZ;WebAssembly;X86;XCore' \
+		-Bbuild .
+
+	make -C build llvm-tblgen
+	make -C build
+
+	python3 utils/lit/setup.py build
+}
+
+check() {
+	make -C build check-llvm
+}
+
+package() {
+	make DESTDIR="$pkgdir" -C build install
+
+	cd "$pkgdir"/$_prefix
+
+	# Remove RPATHs.
+	file lib/*.so bin/* \
+		| awk -F: '$2~/ELF/{print $1}' \
+		| xargs -r chrpath -d
+
+	# Thread 3 requires a lot of stack space to LTO when targeting ARM.
+	# Note that this occurs even when crossing (on a ppc64 host).
+	chelf -s 1048576 bin/llvm-lto2
+
+	# Symlink files from /usr/lib/llvm*/bin to /usr/bin.
+	mkdir -p "$pkgdir"/usr/bin
+	for full_name in bin/*; do
+		bin_name=${full_name##*/}
+		# If this package provides=llvm (i.e. it's the default/latest
+		# llvm package), omit version infix/suffix.
+		if [ "$_default_llvm" = yes ]; then
+			link_name=$bin_name
+		# ..otherwise, add version infix/suffix to the executable name.
+		else case "$bin_name" in
+			llvm-*) link_name="llvm$_majorver-${bin_name#llvm-}";;
+			*) link_name="$bin_name$_majorver";;
+		esac
+		fi
+		case "$name" in
+			FileCheck | obj2yaml | yaml2obj) continue;;
+		esac
+		ln -s ../lib/llvm$_majorver/bin/$bin_name "$pkgdir"/usr/bin/$link_name
+	done
+
+	# Move /usr/lib/$pkgname/include/ into /usr/include/$pkgname/
+	# and symlink it back.
+	mkdir -p "$pkgdir"/usr/include/$pkgname
+	mv include/* "$pkgdir"/usr/include/$pkgname/
+	rmdir include
+	ln -s ../../include/$pkgname include
+
+	ln -s "$pkgdir"/usr/lib/cmake/llvm ../$pkgname/lib/cmake/llvm
+}
+
+static() {
+	pkgdesc="LLVM $_majorver static libraries"
+	_common_subpkg
+
+	mkdir -p "$subpkgdir"/$_prefix/lib
+	mv "$pkgdir"/$_prefix/lib/*.a "$subpkgdir"/$_prefix/lib/
+	strip -d "$subpkgdir"/$_prefix/lib/*.a
+}
+
+libs() {
+	pkgdesc="LLVM $_majorver runtime library"
+	main_soname="libLLVM-$_majorver.so"
+	ver_soname="libLLVM-$pkgver.so"
+	_common_subpkg
+
+	# libLLVM should be in /usr/lib. This is needed for binaries that are
+	# dynamically linked with libLLVM, so they can find it on default path.
+	mkdir -p "$subpkgdir"/usr/lib
+	mv "$pkgdir"/$_prefix/lib/$main_soname "$subpkgdir"/usr/lib/
+	ln -s $main_soname "$subpkgdir"/usr/lib/$ver_soname
+	strip "$subpkgdir"/usr/lib/$ver_soname #797
+
+	# And also symlink it back to the LLVM prefix.
+	mkdir -p "$subpkgdir"/$_prefix/lib
+	ln -s ../../$main_soname "$subpkgdir"/$_prefix/lib/$main_soname
+	ln -s ../../$main_soname "$subpkgdir"/$_prefix/lib/$ver_soname
+}
+
+dev() {
+	_common_subpkg
+	default_dev
+
+	mkdir -p "$subpkgdir"/$_prefix/bin
+
+	mv "$pkgdir"/$_prefix/lib "$subpkgdir"/$_prefix/
+	mv "$pkgdir"/$_prefix/include "$subpkgdir"/$_prefix/
+
+	mv "$pkgdir"/$_prefix/bin/llvm-config "$subpkgdir"/$_prefix/bin/
+}
+
+_test_utils() {
+	pkgdesc="LLVM $_majorver utilities for executing LLVM and Clang style test suites"
+	depends="python3"
+	_common_subpkg
+	replaces=""
+
+	litver="$(python3 "$builddir"/utils/lit/setup.py --version 2>/dev/null \
+		| sed 's/\.dev.*$//')"
+	test -n "$litver" || return 1
+	provides="$provides lit=$litver-r$pkgrel"
+
+	cd "$builddir"/build
+
+	install -D -m 755 bin/FileCheck "$subpkgdir"/$_prefix/bin/FileCheck
+	install -D -m 755 bin/count "$subpkgdir"/$_prefix/bin/count
+	install -D -m 755 bin/not "$subpkgdir"/$_prefix/bin/not
+
+	python3 ../utils/lit/setup.py install --prefix=/usr --root="$subpkgdir"
+	ln -s ../../../bin/lit "$subpkgdir"/$_prefix/bin/lit
+}
+
+_common_subpkg() {
+	if [ "$_default_llvm" = yes ]; then
+		replaces="llvm${subpkgname#$pkgname}"
+		provides="$replaces=$pkgver-r$pkgrel"
+	fi
+}
+
+sha512sums="89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7  llvm-project-16.0.6.src.tar.xz
+e6fec46f3a1183774e4a47b81f3287adc5aa28ebdd52f614c1111fb157cd3137d1b86e04ca76a92b192c900eb5fa4c44f0c00984da14f0a9bb3ee8e488773e00  llvm-fix-build-with-musl-libc.patch
+8e694af50a9f1f8a3dcf7c0e1ce1165237011767e3514271984877882962e492057efd16f0e6e303ee534a48c039c8ec00ed8a34eb9e9826b0324100292695f9  disable-FileSystemTest.CreateDir-perms-assert.patch
+962ea62f96927f397a234c8770fd5a41d5c8ef528de56da6da76908369ee0e9faca2fcba46b3957a928b8138b46c7c0d8c5f353088009e1921f9c3cfffd96081  dyld-elf-ppc32.patch
+5f24f99e31b8e0d1d7a7253be028df55f3524ff600c037404a4870ed22c02467f378b222d7fdd3d7af5b1ef006a90ec0c32c44122771e2ea8763eb62dcfca9dc  exegesis-mcjit.patch
+807587a0c897d47a01a846c5c4f7cbf1f2d16437a163b66ee2381a7147e9d04b0141b2c76d022db61903d0d2841ddb267ba98c66c9e41501ca41837659743df8  hexagon.patch
+de9791cc476817782b553c4edab696132da4ed2b9a3d80dbf1b85b7dc7a8c5e4caf14f2f26e33c27cd80a91b36709d3b24caea910c0a6315ffbb297cb748468d  macho32.patch
+bec1fe4761dae33a8012a54b7bbdd179cac82febcd46ace1844772c06f207661c903f05fcb7a5ebbbece3e33a88b20a5d9b31b40e8a8cd5c626aec04cb6735be  musl-ppc64-elfv2.patch
+89ef5fbab039b017a5652656adf17b680525f1c5dd0b1afc8034fe0b34a2ca196d87640f54cc826356cfcd88c6e5f10754b7e38f04ca49ede4f3864080b787bd  python3-test.patch
+5e0868a96ecd3344a4badb3c23e7e9060a96e3fc7cb4a092febca93eff8c040839041c7a3c8a29955541b585081f84ab8c1ced26198ac93ad2d9db616faf1088  roundeven.patch"
diff --git a/bootstrap/llvm16/disable-FileSystemTest.CreateDir-perms-assert.patch b/bootstrap/llvm16/disable-FileSystemTest.CreateDir-perms-assert.patch
new file mode 100644
index 000000000..a1d8fc28a
--- /dev/null
+++ b/bootstrap/llvm16/disable-FileSystemTest.CreateDir-perms-assert.patch
@@ -0,0 +1,61 @@
+Do not assert permissions of file created in /tmp directory.
+
+This assertion fails, probably due to some specific setup of /tmp
+on build servers.
+
+    FAIL: LLVM-Unit :: Support/SupportTests/FileSystemTest.CreateDir (1293 of 17222)
+    ******************** TEST 'LLVM-Unit :: Support/SupportTests/FileSystemTest.CreateDir' FAILED ********************
+    Note: Google Test filter = FileSystemTest.CreateDir
+    [==========] Running 1 test from 1 test case.
+    [----------] Global test environment set-up.
+    [----------] 1 test from FileSystemTest
+    [ RUN      ] FileSystemTest.CreateDir
+    /home/buildozer/aports/testing/llvm3.9/src/llvm-3.9.1.src/unittests/Support/Path.cpp:591: Failure
+    Value of: fs::perms::owner_read | fs::perms::owner_exe
+      Actual: 320
+    Expected: Status.permissions() & fs::perms::all_all
+    Which is: 448
+
+--- a/unittests/Support/Path.cpp
++++ b/unittests/Support/Path.cpp
+@@ -994,23 +994,23 @@
+   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo"));
+ 
+ #ifdef LLVM_ON_UNIX
+-  // Set a 0000 umask so that we can test our directory permissions.
+-  mode_t OldUmask = ::umask(0000);
+-
+-  fs::file_status Status;
+-  ASSERT_NO_ERROR(
+-      fs::create_directory(Twine(TestDirectory) + "baz500", false,
+-                           fs::perms::owner_read | fs::perms::owner_exe));
+-  ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz500", Status));
+-  ASSERT_EQ(Status.permissions() & fs::perms::all_all,
+-            fs::perms::owner_read | fs::perms::owner_exe);
+-  ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "baz777", false,
+-                                       fs::perms::all_all));
+-  ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz777", Status));
+-  ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::all_all);
+-
+-  // Restore umask to be safe.
+-  ::umask(OldUmask);
++//  // Set a 0000 umask so that we can test our directory permissions.
++//  mode_t OldUmask = ::umask(0000);
++//
++//  fs::file_status Status;
++//  ASSERT_NO_ERROR(
++//      fs::create_directory(Twine(TestDirectory) + "baz500", false,
++//                           fs::perms::owner_read | fs::perms::owner_exe));
++//  ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz500", Status));
++//  ASSERT_EQ(Status.permissions() & fs::perms::all_all,
++//            fs::perms::owner_read | fs::perms::owner_exe);
++//  ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "baz777", false,
++//                                       fs::perms::all_all));
++//  ASSERT_NO_ERROR(fs::status(Twine(TestDirectory) + "baz777", Status));
++//  ASSERT_EQ(Status.permissions() & fs::perms::all_all, fs::perms::all_all);
++//
++//  // Restore umask to be safe.
++//  ::umask(OldUmask);
+ #endif
+ 
+ #ifdef _WIN32
diff --git a/bootstrap/llvm16/dwarf-info.patch b/bootstrap/llvm16/dwarf-info.patch
new file mode 100644
index 000000000..9357c6519
--- /dev/null
+++ b/bootstrap/llvm16/dwarf-info.patch
@@ -0,0 +1,28 @@
+Author: A. Wilcox <awilfox@adelielinux.org>
+
+This isn't the proper fix, but debugging the LLVM formatter is a bit
+above my paygrade at the moment.
+
+The issue shows up in the DWARF X86 test on ppc and armv7:
+
+error: Simplified template DW_AT_name could not be reconstituted:
+         original: f3<char, '\x00', '\x01', '\x06', '\a', '\r', '\x0e', '\x1f', ' ', '!', '\x7f', '\x80'>
+    reconstituted: f3<char, '\x00', '\x00', '\x00', '\a', '\r', '\x00', '\x00', ' ', '!', '\x00', '\x00'>
+
+With this patch, this error does not occur.  Debugging shows that the
+llvm::format overload called in the error case is <long long>, so I
+think it is having an issue converting a 64-bit value on platforms
+where char is default-unsigned.
+
+(pmmx does not show this issue, and has signed char.)
+--- llvm-14.0.6.src/lib/DebugInfo/DWARF/DWARFDie.cpp.old	2022-06-22 16:46:24.000000000 +0000
++++ llvm-14.0.6.src/lib/DebugInfo/DWARF/DWARFDie.cpp	2022-11-28 10:32:05.573627744 +0000
+@@ -506,7 +506,7 @@
+               OS << (char)Val;
+               OS << "'";
+             } else if (Val < 256)
+-              OS << to_string(llvm::format("'\\x%02x'", Val));
++              OS << to_string(llvm::format("'\\x%02x'", (unsigned char)Val));
+             else if (Val <= 0xFFFF)
+               OS << to_string(llvm::format("'\\u%04x'", Val));
+             else
diff --git a/bootstrap/llvm16/dyld-elf-ppc32.patch b/bootstrap/llvm16/dyld-elf-ppc32.patch
new file mode 100644
index 000000000..42f0abb53
--- /dev/null
+++ b/bootstrap/llvm16/dyld-elf-ppc32.patch
@@ -0,0 +1,24 @@
+Author: A. Wilcox <awilfox@adelielinux.org>
+Upstream-Status: Pending
+
+This implements the R_PPC_REL32 relocation type, which is needed for the
+OrcJIT to work properly on 32-bit PowerPC.
+
+Needs more tests before submitting upstream, but seems to DTRT.
+
+--- llvm-14.0.6.src/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp.old	2022-06-22 16:46:24.000000000 +0000
++++ llvm-14.0.6.src/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp	2022-11-28 06:33:12.239921624 +0000
+@@ -825,6 +825,13 @@
+   case ELF::R_PPC_ADDR16_HA:
+     writeInt16BE(LocalAddress, applyPPCha(Value + Addend));
+     break;
++  case ELF::R_PPC_REL32:
++    uint32_t FinalAddress = Section.getLoadAddressWithOffset(Offset);
++    int64_t delta = static_cast<int64_t>(Value - FinalAddress + Addend);
++    if (SignExtend64<32>(delta) != delta)
++      llvm_unreachable("Relocation R_PPC_REL32 overflow");
++    writeInt32BE(LocalAddress, delta);
++    break;
+   }
+ }
+ 
diff --git a/bootstrap/llvm16/exegesis-mcjit.patch b/bootstrap/llvm16/exegesis-mcjit.patch
new file mode 100644
index 000000000..7363965c2
--- /dev/null
+++ b/bootstrap/llvm16/exegesis-mcjit.patch
@@ -0,0 +1,348 @@
+This is a backport from LLVM 17 that fixes a test failure observed on
+ppc64:
+
+********************
+FAIL: LLVM :: tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s (216 of 47688)
+******************** TEST 'LLVM :: tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s' FAILED ********************
+PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
+Stack dump:
+0.	Program arguments: /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/build/bin/llvm-exegesis -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 --benchmark-phase=assemble-measured-code -mode=latency -opcode-name=ADD8
+ #0 0x0000000141a994d0 llvm::sys::RunSignalHandlers() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/Support/Signals.cpp:103:22
+ #1 0x0000000141a994d0 SignalHandler(int) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/Support/Unix/Signals.inc:402:31
+ #2 0x00003fff89552444  0x444 __register_frame_info_bases
+ #3 0x00003fff89552444 
+ #4 0x00003fff89552444 __register_frame_info (+0x444)
+ #5 0xaaaaaaaaaaaaaaab 
+ #6 0x00003fff8907b700 __register_frame (/usr/lib/libgcc_s.so.1+0x12700)
+ #7 0x00003fff8907b760 llvm::RTDyldMemoryManager::registerEHFramesInProcess(unsigned char*, unsigned long) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp:119:19
+ #8 0x00003fff8907b760 llvm::RTDyldMemoryManager::registerEHFrames(unsigned char*, unsigned long, unsigned long) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp:131:28
+ #9 0x00003fff8907b7c0 llvm::RuntimeDyldELF::registerEHFrames() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp:227:28
+#10 0x0000000142e9d1b0 llvm::RuntimeDyld::registerEHFrames() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp:1435:27
+#11 0x0000000142eb4258 llvm::MCJIT::finalizeLoadedModules() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:251:24
+#12 0x0000000142ea2154 __gthread_mutex_unlock /usr/include/c++/13.3.0/powerpc64-foxkit-linux-musl/bits/gthr-default.h:779:43
+#13 0x0000000142ea2154 __gthread_recursive_mutex_unlock /usr/include/c++/13.3.0/powerpc64-foxkit-linux-musl/bits/gthr-default.h:832:33
+#14 0x0000000142ea2154 std::recursive_mutex::unlock() /usr/include/c++/13.3.0/mutex:139:39
+#15 0x0000000142ea2154 llvm::sys::SmartMutex<false>::unlock() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/include/llvm/Support/Mutex.h:47:22
+#16 0x0000000142ea2154 std::lock_guard<llvm::sys::SmartMutex<false>>::~lock_guard() /usr/include/c++/13.3.0/bits/std_mutex.h:255:25
+#17 0x0000000142ea2154 llvm::MCJIT::getFunctionAddress(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:410:1
+#18 0x0000000142b6f948 llvm::exegesis::ExecutableFunction::ExecutableFunction(std::unique_ptr<llvm::LLVMTargetMachine, std::default_delete<llvm::LLVMTargetMachine>>, llvm::object::OwningBinary<llvm::object::ObjectFile>&&) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/tools/llvm-exegesis/lib/Assembler.cpp:319:66
+#19 0x0000000142b73a18 llvm::exegesis::BenchmarkRunner::getRunnableConfiguration(llvm::exegesis::BenchmarkCode const&, unsigned int, unsigned int, llvm::exegesis::SnippetRepetitor const&) const /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp:181:62
+#20 0x0000000141af099c llvm::exegesis::runBenchmarkConfigurations(llvm::exegesis::LLVMState const&, llvm::ArrayRef<llvm::exegesis::BenchmarkCode>, llvm::ArrayRef<std::unique_ptr<llvm::exegesis::SnippetRepetitor const, std::default_delete<llvm::exegesis::SnippetRepetitor const>>>, llvm::exegesis::BenchmarkRunner const&) /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/tools/llvm-exegesis/llvm-exegesis.cpp:376:58
+#21 0x0000000141aca060 llvm::exegesis::benchmarkMain() /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/tools/llvm-exegesis/llvm-exegesis.cpp:506:30
+#22 0x000000013fbe7144 main /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/tools/llvm-exegesis/llvm-exegesis.cpp:660:1
+#23 0x000000013fbea0a8 libc_start_main_stage2 /usr/src/packages/system/musl/src/musl-1.2.3/src/env/__libc_start_main.c:95:2
+#24 0x000000013fb105ac __libc_start_main /usr/src/packages/system/musl/src/musl-1.2.3/src/env/__libc_start_main.c:86:9
+#25 0x00003fff89494038 _start_c /usr/src/packages/system/musl/src/musl-1.2.3/crt/crt1.c:18:2
+#26 0x00003fff894940b4 _start (/lib/ld-musl-powerpc64.so.1+0x220b4)
+Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
+0  llvm-exegesis          0x0000000141a994d0
+1                         0x00003fff89552444 __kernel_sigtramp_rt64 + 0
+2                         0xaaaaaaaaaaaaaaab __kernel_sigtramp_rt64 + 12297759015719765607
+3  libgcc_s.so.1          0x00003fff8907b700 __register_frame_info_bases + 128
+4  libgcc_s.so.1          0x00003fff8907b760 __register_frame_info + 32
+5  libgcc_s.so.1          0x00003fff8907b7c0 __register_frame + 64
+6  llvm-exegesis          0x0000000142e9d1b0
+7  llvm-exegesis          0x0000000142eb4258
+8  llvm-exegesis          0x0000000142ea2154
+9  llvm-exegesis          0x0000000142b6f948
+10 llvm-exegesis          0x0000000142b73a18
+11 llvm-exegesis          0x0000000141af099c
+12 llvm-exegesis          0x0000000141aca060
+13 llvm-exegesis          0x000000013fbe7144
+14 llvm-exegesis          0x000000013fbea0a8
+15 llvm-exegesis          0x000000013fb105ac
+16 ld-musl-powerpc64.so.1 0x00003fff89494038
+17 ld-musl-powerpc64.so.1 0x00003fff894940b4 __libc_start_main + 100
+18 llvm-exegesis          0x000000013fbdcf78
+19 llvm-exegesis          0x000000013fbdcf20
+FileCheck error: '<stdin>' is empty.
+FileCheck command line:  /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/build/bin/FileCheck /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/test/tools/llvm-exegesis/PowerPC/latency-by-opcode-name.s
+
+Tracing with a debug-build libgcc_s yields:
+
+Program received signal SIGSEGV, Segmentation fault.
+classify_object_over_fdes (ob=0x3ffff7904700, this_fde=0x400007ae4004, range=0x3fffffffd700) at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:732
+732	  for (; ! last_fde (ob, this_fde); this_fde = next_fde (this_fde))
+(gdb) bt
+#0  classify_object_over_fdes (ob=0x3ffff7904700, this_fde=0x400007ae4004, range=0x3fffffffd700)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:732
+#1  0x00003ffff7b47700 in register_pc_range_for_object (ob=0x3ffff7904700, begin=<optimized out>)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:118
+#2  __register_frame_info_bases (dbase=<optimized out>, tbase=<optimized out>, ob=0x3ffff7904700, begin=<optimized out>)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:144
+#3  __register_frame_info_bases (begin=<optimized out>, ob=0x3ffff7904700, tbase=<optimized out>, dbase=<optimized out>)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:126
+#4  0x00003ffff7b47760 in __register_frame_info (begin=<optimized out>, ob=<optimized out>)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:159
+#5  0x00003ffff7b477c0 in __register_frame (begin=0x3ffff7ae4000)
+    at /home/awilcox/Code/awilfox/gcc-next/system/gcc/src/gcc-13.3.0/libgcc/unwind-dw2-fde.c:172
+#6  0x00000001038da4f0 in llvm::RTDyldMemoryManager::registerEHFramesInProcess (Size=<optimized out>, Addr=<optimized out>)
+    at /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp:119
+#7  llvm::RTDyldMemoryManager::registerEHFrames (this=0x3ffff78b1700, Addr=<optimized out>, LoadAddr=<optimized out>,
+    Size=<optimized out>)
+    at /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp:131
+#8  0x00000001038f1598 in llvm::RuntimeDyldELF::registerEHFrames (this=0x3ffff7b0e550)
+    at /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp:227
+#9  0x00000001038df494 in llvm::RuntimeDyld::registerEHFrames (this=<optimized out>)
+    at /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp:1435
+#10 0x00000001035acc88 in llvm::MCJIT::finalizeLoadedModules (this=0x3ffff7aef0b0)
+    at /home/awilcox/Code/awilfox/rust-next/bootstrap/llvm16/src/llvm-project-16.0.6.src/llvm/lib/ExecutionEngine/MCJIT/MCJIT.cpp:251
+
+The reason is because it is trying to interpret a little-endian FDE as a
+native (big-endian) one and failing.  This was noted upstream and fixed
+in the LLVM 17 branch but it was never backported to a 16 release.
+
+From 27f37db76a79e746561ad2545ff6ccf0d50cc38c Mon Sep 17 00:00:00 2001
+From: Pavel Kosov <kpdev42@gmail.com>
+Date: Thu, 8 Jun 2023 19:14:00 +0300
+Subject: [PATCH] [llvm-exegesis] Use MCJIT only for execution
+
+Initially, llvm-exegesis was generating the benchmark code for the
+host CPU to execute it inside its own process. Thus, MCJIT was reused
+for fetching function's bytes to fill the assembled_snippet field in
+the benchmark report.
+
+Later, the --mtriple and --benchmark-phase command line options were
+introduced that are handy for testing snippet generation even if
+snippet execution is not possible. In that setup, MCJIT is asked to
+parse an object file for a foreign CPU or operating system that is
+probably not guaranteed to succeed and was actually observed to fail
+in https://reviews.llvm.org/D145763.
+
+This commit implements a much simplified function's code fetching,
+assuming the benchmark function is the only function in the object file
+and it spans across the entire text section (note that MCJIT-based code
+has more or less the same assumption - see TrackingSectionMemoryManager
+class).
+
+~~~
+
+Huawei RRI, OS Lab
+
+Reviewed By: courbet
+
+Differential Revision: https://reviews.llvm.org/D148921
+---
+ .../AArch64/print-assembled-snippet.s         | 31 +++++++++++++++++
+ .../Mips/print-assembled-snippet.s            | 23 +++++++++++++
+ .../PowerPC/print-assembled-snippet.s         | 15 ++++++++
+ .../X86/print-assembled-snippet.s             | 32 +++++++++++++++++
+ llvm/tools/llvm-exegesis/lib/Assembler.cpp    | 34 +++++++++++++++++++
+ llvm/tools/llvm-exegesis/lib/Assembler.h      |  4 +++
+ .../llvm-exegesis/lib/BenchmarkRunner.cpp     |  8 ++---
+ 7 files changed, 143 insertions(+), 4 deletions(-)
+ create mode 100644 llvm/test/tools/llvm-exegesis/AArch64/print-assembled-snippet.s
+ create mode 100644 llvm/test/tools/llvm-exegesis/Mips/print-assembled-snippet.s
+ create mode 100644 llvm/test/tools/llvm-exegesis/PowerPC/print-assembled-snippet.s
+ create mode 100644 llvm/test/tools/llvm-exegesis/X86/print-assembled-snippet.s
+
+diff --git a/llvm/test/tools/llvm-exegesis/AArch64/print-assembled-snippet.s b/llvm/test/tools/llvm-exegesis/AArch64/print-assembled-snippet.s
+new file mode 100644
+index 0000000000000..e8b312d7a6ae9
+--- /dev/null
++++ llvm/test/tools/llvm-exegesis/AArch64/print-assembled-snippet.s
+@@ -0,0 +1,31 @@
++# Check that "assembled_snippet" is fetched correctly from object file.
++# Feel free to update the snippet in this test if the code generated by the
++# snippet repetitor was changed intentionally and it is still fetched correctly.
++
++# RUN: llvm-exegesis --mtriple=aarch64-linux-gnu --mcpu=generic --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-LINUX
++
++# RUN: llvm-exegesis --mtriple=aarch64-windows-gnu --mcpu=generic --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-WINDOWS-GNU
++
++# RUN: llvm-exegesis --mtriple=aarch64-windows-msvc --mcpu=generic --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-WINDOWS-MSVC
++
++# LLVM-EXEGESIS-DEFREG X0 0
++# LLVM-EXEGESIS-DEFREG X1 0
++add x0, x0, x1
++
++# CHECK-LINUX: cpu_name:          generic
++# CHECK-LINUX: llvm_triple:       aarch64-unknown-linux-gnu
++# CHECK-LINUX: assembled_snippet: 000080D2010080D20000018B0000018B0000018B0000018BC0035FD6{{$}}
++
++# CHECK-WINDOWS-GNU: cpu_name:          generic
++# CHECK-WINDOWS-GNU: llvm_triple:       aarch64-unknown-windows-gnu
++# CHECK-WINDOWS-GNU: assembled_snippet: 000080D2010080D20000018B0000018B0000018B0000018BC0035FD6{{$}}
++
++# CHECK-WINDOWS-MSVC: cpu_name:          generic
++# CHECK-WINDOWS-MSVC: llvm_triple:       aarch64-unknown-windows-msvc
++# CHECK-WINDOWS-MSVC: assembled_snippet: 000080D2010080D20000018B0000018B0000018B0000018BC0035FD6{{$}}
+diff --git a/llvm/test/tools/llvm-exegesis/Mips/print-assembled-snippet.s b/llvm/test/tools/llvm-exegesis/Mips/print-assembled-snippet.s
+new file mode 100644
+index 0000000000000..f0844c4145a2b
+--- /dev/null
++++ llvm/test/tools/llvm-exegesis/Mips/print-assembled-snippet.s
+@@ -0,0 +1,23 @@
++# Check that "assembled_snippet" is fetched correctly from object file.
++# Feel free to update the snippet in this test if the code generated by the
++# snippet repetitor was changed intentionally and it is still fetched correctly.
++
++# RUN: llvm-exegesis --mtriple=mips-linux-gnu --mcpu=generic --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-LINUX
++
++# RUN: llvm-exegesis --mtriple=mips64-linux-gnu --mcpu=generic --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-LINUX-64
++
++# LLVM-EXEGESIS-DEFREG A0 0
++# LLVM-EXEGESIS-DEFREG A1 0
++add $2, $5, $4
++
++# CHECK-LINUX: cpu_name:             generic
++# CHECK-LINUX: llvm_triple:          mips-unknown-linux-gnu
++# CHECK-LINUX: assembled_snippet:    340400003405000000A4102000A4102000A4102000A4102003E00008{{$}}
++
++# CHECK-LINUX-64: cpu_name:           generic
++# CHECK-LINUX-64: llvm_triple:        mips64-unknown-linux-gnu
++# CHECK-LINUX-64: assembled_snippet:  340400003405000000A4102000A4102000A4102000A4102003E00008{{$}}
+diff --git a/llvm/test/tools/llvm-exegesis/PowerPC/print-assembled-snippet.s b/llvm/test/tools/llvm-exegesis/PowerPC/print-assembled-snippet.s
+new file mode 100644
+index 0000000000000..75cad37a768eb
+--- /dev/null
++++ llvm/test/tools/llvm-exegesis/PowerPC/print-assembled-snippet.s
+@@ -0,0 +1,15 @@
++# Check that "assembled_snippet" is fetched correctly from object file.
++# Feel free to update the snippet in this test if the code generated by the
++# snippet repetitor was changed intentionally and it is still fetched correctly.
++
++# RUN: llvm-exegesis --mtriple=powerpc64le-linux-gnu --mcpu=pwr8 --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-LINUX-64-LE
++
++# LLVM-EXEGESIS-DEFREG R3 0
++# LLVM-EXEGESIS-DEFREG R4 0
++add 3, 4, 3
++
++# CHECK-LINUX-64-LE: cpu_name:           pwr8
++# CHECK-LINUX-64-LE: llvm_triple:        powerpc64le-unknown-linux-gnu
++# CHECK-LINUX-64-LE: assembled_snippet:  0000603800008038141A647C141A647C141A647C141A647C2000804E000000000000000000000000{{$}}
+diff --git a/llvm/test/tools/llvm-exegesis/X86/print-assembled-snippet.s b/llvm/test/tools/llvm-exegesis/X86/print-assembled-snippet.s
+new file mode 100644
+index 0000000000000..532901d0e0430
+--- /dev/null
++++ llvm/test/tools/llvm-exegesis/X86/print-assembled-snippet.s
+@@ -0,0 +1,32 @@
++# Check that "assembled_snippet" is fetched correctly from object file.
++# Feel free to update the snippet in this test if the code generated by the
++# snippet repetitor was changed intentionally and it is still fetched correctly.
++
++# RUN: llvm-exegesis --mtriple=x86_64-linux-gnu --mcpu=x86-64 --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-LINUX
++
++# RUN: llvm-exegesis --mtriple=x86_64-windows-gnu --mcpu=x86-64 --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-WINDOWS-GNU
++
++# RUN: llvm-exegesis --mtriple=x86_64-windows-msvc --mcpu=x86-64 --benchmark-phase=prepare-and-assemble-snippet \
++# RUN:               --snippets-file=%s --mode=latency --repetition-mode=duplicate \
++# RUN: | FileCheck %s --check-prefix=CHECK-WINDOWS-MSVC
++
++# LLVM-EXEGESIS-DEFREG RDI 0
++# LLVM-EXEGESIS-DEFREG RSI 0
++# LLVM-EXEGESIS-DEFREG RAX 0
++leaq    (%rdi,%rsi), %rax
++
++# CHECK-LINUX: cpu_name:          x86-64
++# CHECK-LINUX: llvm_triple:       x86_64-unknown-linux-gnu
++# CHECK-LINUX: assembled_snippet: 48BF000000000000000048BE000000000000000048B80000000000000000488D0437488D0437488D0437488D0437C3{{$}}
++
++# CHECK-WINDOWS-GNU: cpu_name:          x86-64
++# CHECK-WINDOWS-GNU: llvm_triple:       x86_64-unknown-windows-gnu
++# CHECK-WINDOWS-GNU: assembled_snippet: 565748BF000000000000000048BE000000000000000048B80000000000000000488D0437488D0437488D0437488D04375F5EC3{{$}}
++
++# CHECK-WINDOWS-MSVC: cpu_name:          x86-64
++# CHECK-WINDOWS-MSVC: llvm_triple:       x86_64-unknown-windows-msvc
++# CHECK-WINDOWS-MSVC: assembled_snippet: 565748BF000000000000000048BE000000000000000048B80000000000000000488D0437488D0437488D0437488D04375F5EC3{{$}}
+diff --git a/llvm/tools/llvm-exegesis/lib/Assembler.cpp b/llvm/tools/llvm-exegesis/lib/Assembler.cpp
+index 07465c71afc70..8e561f587cc2a 100644
+--- llvm/tools/llvm-exegesis/lib/Assembler.cpp
++++ llvm/tools/llvm-exegesis/lib/Assembler.cpp
+@@ -25,6 +25,7 @@
+ #include "llvm/MC/MCInstrInfo.h"
+ #include "llvm/Support/Alignment.h"
+ #include "llvm/Support/MemoryBuffer.h"
++#include "llvm/Support/raw_ostream.h"
+ 
+ namespace llvm {
+ namespace exegesis {
+@@ -323,5 +324,38 @@ ExecutableFunction::ExecutableFunction(
+       StringRef(reinterpret_cast<const char *>(FunctionAddress), CodeSize);
+ }
+ 
++Error getBenchmarkFunctionBytes(const StringRef InputData,
++                                std::vector<uint8_t> &Bytes) {
++  const auto Holder = getObjectFromBuffer(InputData);
++  const auto *Obj = Holder.getBinary();
++  // See RuntimeDyldImpl::loadObjectImpl(Obj) for much more complete
++  // implementation.
++
++  // Find the only function in the object file.
++  SmallVector<object::SymbolRef, 1> Functions;
++  for (auto &Sym : Obj->symbols()) {
++    auto SymType = Sym.getType();
++    if (SymType && *SymType == object::SymbolRef::Type::ST_Function)
++      Functions.push_back(Sym);
++  }
++  if (Functions.size() != 1)
++    return make_error<Failure>("Exactly one function expected");
++
++  // Find the containing section - it is assumed to contain only this function.
++  auto SectionOrErr = Functions.front().getSection();
++  if (!SectionOrErr || *SectionOrErr == Obj->section_end())
++    return make_error<Failure>("Section not found");
++
++  auto Address = Functions.front().getAddress();
++  if (!Address || *Address != SectionOrErr.get()->getAddress())
++    return make_error<Failure>("Unexpected layout");
++
++  auto ContentsOrErr = SectionOrErr.get()->getContents();
++  if (!ContentsOrErr)
++    return ContentsOrErr.takeError();
++  Bytes.assign(ContentsOrErr->begin(), ContentsOrErr->end());
++  return Error::success();
++}
++
+ } // namespace exegesis
+ } // namespace llvm
+diff --git a/llvm/tools/llvm-exegesis/lib/Assembler.h b/llvm/tools/llvm-exegesis/lib/Assembler.h
+index 2a83344b751e5..cd1e398e4a564 100644
+--- llvm/tools/llvm-exegesis/lib/Assembler.h
++++ llvm/tools/llvm-exegesis/lib/Assembler.h
+@@ -121,6 +121,10 @@ struct ExecutableFunction {
+   StringRef FunctionBytes;
+ };
+ 
++// Copies benchmark function's bytes from benchmark object.
++Error getBenchmarkFunctionBytes(const StringRef InputData,
++                                std::vector<uint8_t> &Bytes);
++
+ // Creates a void(int8*) MachineFunction.
+ MachineFunction &createVoidVoidPtrMachineFunction(StringRef FunctionID,
+                                                   Module *Module,
+diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
+index e1df2940a9b7e..f934b8ec4c6cc 100644
+--- llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
++++ llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
+@@ -177,10 +177,10 @@ BenchmarkRunner::getRunnableConfiguration(
+                                    LoopBodySizeForSnippet);
+     if (Error E = Snippet.takeError())
+       return std::move(E);
+-    const ExecutableFunction EF(State.createTargetMachine(),
+-                                getObjectFromBuffer(*Snippet));
+-    const auto FnBytes = EF.getFunctionBytes();
+-    llvm::append_range(InstrBenchmark.AssembledSnippet, FnBytes);
++
++    if (auto Err = getBenchmarkFunctionBytes(*Snippet,
++                                             InstrBenchmark.AssembledSnippet))
++      return std::move(Err);
+   }
+ 
+   // Assemble NumRepetitions instructions repetitions of the snippet for
diff --git a/bootstrap/llvm16/hexagon.patch b/bootstrap/llvm16/hexagon.patch
new file mode 100644
index 000000000..552079b80
--- /dev/null
+++ b/bootstrap/llvm16/hexagon.patch
@@ -0,0 +1,95 @@
+From 37605662a99bd0815e2f2e452eb6ab1ce53ecffd Mon Sep 17 00:00:00 2001
+From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
+Date: Mon, 30 May 2022 02:51:34 -0500
+Subject: [PATCH] [Hexagon][Tests] Fix tests on Linux/musl
+
+When running on a host system using musl, the target triple is defined
+as hexagon-unknown-linux-musl by default.  The Linux ABI differs from
+the non-Linux one with varargs, so this causes the tests to fail.
+
+Closes BZ49592, PR48936.
+
+Signed-off-by: A. Wilcox <AWilcox@Wilcox-Tech.com>
+---
+ test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll | 2 +-
+ test/CodeGen/Hexagon/long-calls.ll                | 2 +-
+ test/CodeGen/Hexagon/mlong-calls.ll               | 2 +-
+ test/CodeGen/Hexagon/pic-regusage.ll              | 2 +-
+ test/CodeGen/Hexagon/runtime-stkchk.ll            | 2 +-
+ test/CodeGen/Hexagon/swp-memrefs-epilog.ll        | 2 +-
+ test/CodeGen/Hexagon/vararg-formal.ll             | 2 +-
+ 7 files changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll b/test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll
+index afbef217911a..d317d7eac800 100644
+--- a/test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll
++++ b/test/CodeGen/Hexagon/csr-stubs-spill-threshold.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -mtriple=hexagon  -O2 -spill-func-threshold=2 < %s | FileCheck %s
++; RUN: llc -march=hexagon -mtriple=hexagon-unknown-linux-gnu -O2 -spill-func-threshold=2 < %s | FileCheck %s
+ 
+ declare i32 @f0(i32, i32, i32, i32, i32, i32)
+ 
+diff --git a/test/CodeGen/Hexagon/long-calls.ll b/test/CodeGen/Hexagon/long-calls.ll
+index 628362783c9c..886405a2d91a 100644
+--- a/test/CodeGen/Hexagon/long-calls.ll
++++ b/test/CodeGen/Hexagon/long-calls.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -mtriple=hexagon -enable-save-restore-long -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
++; RUN: llc -march=hexagon -mtriple=hexagon-unknown-linux-gnu -enable-save-restore-long -hexagon-initial-cfg-cleanup=0 < %s | FileCheck %s
+ 
+ ; Check that the -long-calls feature is supported by the backend.
+ 
+diff --git a/test/CodeGen/Hexagon/mlong-calls.ll b/test/CodeGen/Hexagon/mlong-calls.ll
+index d76b87f987fe..383486dfe63d 100644
+--- a/test/CodeGen/Hexagon/mlong-calls.ll
++++ b/test/CodeGen/Hexagon/mlong-calls.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -hexagon-long-calls -mtriple=hexagon -enable-save-restore-long=true < %s | FileCheck %s
++; RUN: llc -hexagon-long-calls -march=hexagon -mtriple=hexagon-unknown-linux-gnu -enable-save-restore-long=true < %s | FileCheck %s
+ 
+ ; CHECK: call ##f1
+ ; CHECK: jump ##__restore
+diff --git a/test/CodeGen/Hexagon/pic-regusage.ll b/test/CodeGen/Hexagon/pic-regusage.ll
+index 9d3b6cec39e3..077063e36550 100644
+--- a/test/CodeGen/Hexagon/pic-regusage.ll
++++ b/test/CodeGen/Hexagon/pic-regusage.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -mtriple=hexagon -relocation-model=pic < %s | FileCheck %s
++; RUN: llc -march=hexagon -mtriple=hexagon-unknown-linux-gnu -relocation-model=pic < %s | FileCheck %s
+ 
+ ; Force the use of R14 (by clobbering everything else in the inline asm).
+ ; Make sure that R14 is not set before the __save call (which will clobber
+diff --git a/test/CodeGen/Hexagon/runtime-stkchk.ll b/test/CodeGen/Hexagon/runtime-stkchk.ll
+index 66e93d02ef51..2f3f2ad10f6a 100644
+--- a/test/CodeGen/Hexagon/runtime-stkchk.ll
++++ b/test/CodeGen/Hexagon/runtime-stkchk.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -mtriple=hexagon -mcpu=hexagonv55 -enable-stackovf-sanitizer < %s | FileCheck %s
++; RUN: llc -march=hexagon -mcpu=hexagonv55 -mtriple=hexagon-unknown-linux-gnu -enable-stackovf-sanitizer < %s | FileCheck %s
+ 
+ ; CHECK-LABEL: foo_1
+ ; CHECK: __runtime_stack_check
+diff --git a/test/CodeGen/Hexagon/swp-memrefs-epilog.ll b/test/CodeGen/Hexagon/swp-memrefs-epilog.ll
+index 20e39dd08fd7..b34dfbc31e9d 100644
+--- a/test/CodeGen/Hexagon/swp-memrefs-epilog.ll
++++ b/test/CodeGen/Hexagon/swp-memrefs-epilog.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -march=hexagon -O2 -fp-contract=fast < %s -pipeliner-experimental-cg=true | FileCheck %s
++; RUN: llc -march=hexagon -mtriple=hexagon-unknown-linux-gnu -O2 -fp-contract=fast < %s -pipeliner-experimental-cg=true | FileCheck %s
+ 
+ ; Test that the memoperands for instructions in the epilog are updated
+ ; correctly. Previously, the pipeliner updated the offset for the memoperands
+diff --git a/test/CodeGen/Hexagon/vararg-formal.ll b/test/CodeGen/Hexagon/vararg-formal.ll
+index 6bba65fcab16..fb3132929bcf 100644
+--- a/test/CodeGen/Hexagon/vararg-formal.ll
++++ b/test/CodeGen/Hexagon/vararg-formal.ll
+@@ -1,4 +1,4 @@
+-; RUN: llc -march=hexagon < %s | FileCheck %s
++; RUN: llc -march=hexagon -mtriple=hexagon-unknown-linux-gnu < %s | FileCheck %s
+ 
+ ; Make sure that the first formal argument is not loaded from memory.
+ ; CHECK-NOT: memw
+-- 
+2.36.0
+
diff --git a/bootstrap/llvm16/llvm-fix-build-with-musl-libc.patch b/bootstrap/llvm16/llvm-fix-build-with-musl-libc.patch
new file mode 100644
index 000000000..7fad90bd1
--- /dev/null
+++ b/bootstrap/llvm16/llvm-fix-build-with-musl-libc.patch
@@ -0,0 +1,46 @@
+From 5c571082fdaf61f6df19d9b7137dc26d71334058 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Thu, 18 Feb 2016 10:33:04 +0100
+Subject: [PATCH 2/3] Fix build with musl libc
+
+On musl libc the fopen64 and fopen are the same thing, but for
+compatibility they have a `#define fopen64 fopen`. Same applies for
+fseek64, fstat64, fstatvfs64, ftello64, lstat64, stat64 and tmpfile64.
+---
+ include/llvm/Analysis/TargetLibraryInfo.h | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/include/llvm/Analysis/TargetLibraryInfo.h b/include/llvm/Analysis/TargetLibraryInfo.h
+index 7becdf0..7f14427 100644
+--- a/include/llvm/Analysis/TargetLibraryInfo.h
++++ b/include/llvm/Analysis/TargetLibraryInfo.h
+@@ -17,6 +17,26 @@
+ #include "llvm/IR/Module.h"
+ #include "llvm/Pass.h"
+ 
++#undef fopen64
++#undef fseeko64
++#undef fstat64
++#undef fstatvfs64
++#undef ftello64
++#undef lstat64
++#undef stat64
++#undef tmpfile64
++#undef F_GETLK64
++#undef F_SETLK64
++#undef F_SETLKW64
++#undef flock64
++#undef open64
++#undef openat64
++#undef creat64
++#undef lockf64
++#undef posix_fadvise64
++#undef posix_fallocate64
++#undef off64_t
++
+ namespace llvm {
+ /// VecDesc - Describes a possible vectorization of a function.
+ /// Function 'VectorFnName' is equivalent to 'ScalarFnName' vectorized
+-- 
+2.7.3
+
diff --git a/bootstrap/llvm16/macho32.patch b/bootstrap/llvm16/macho32.patch
new file mode 100644
index 000000000..31279d502
--- /dev/null
+++ b/bootstrap/llvm16/macho32.patch
@@ -0,0 +1,17 @@
+Use integer offset math instead of pointer math to determine load
+command bounds.
+
+Upstream-URL: https://github.com/llvm/llvm-project/issues/56746
+
+--- llvm-14.0.6.src/lib/Object/MachOObjectFile.cpp.old	2022-06-22 16:46:24.000000000 +0000
++++ llvm-14.0.6.src/lib/Object/MachOObjectFile.cpp	2022-11-28 04:21:02.730211841 +0000
+@@ -190,7 +190,8 @@
+ getLoadCommandInfo(const MachOObjectFile &Obj, const char *Ptr,
+                    uint32_t LoadCommandIndex) {
+   if (auto CmdOrErr = getStructOrErr<MachO::load_command>(Obj, Ptr)) {
+-    if (CmdOrErr->cmdsize + Ptr > Obj.getData().end())
++    uint64_t Offset = Ptr - Obj.getData().begin();
++    if (CmdOrErr->cmdsize + Offset > Obj.getData().size())
+       return malformedError("load command " + Twine(LoadCommandIndex) +
+                             " extends past end of file");
+     if (CmdOrErr->cmdsize < 8)
diff --git a/bootstrap/llvm16/musl-ppc64-elfv2.patch b/bootstrap/llvm16/musl-ppc64-elfv2.patch
new file mode 100644
index 000000000..49f6e5702
--- /dev/null
+++ b/bootstrap/llvm16/musl-ppc64-elfv2.patch
@@ -0,0 +1,28 @@
+From 750d323a6060ad92c3d247f85d6555041f55b4a5 Mon Sep 17 00:00:00 2001
+From: "A. Wilcox" <AWilcox@Wilcox-Tech.com>
+Date: Thu, 4 Oct 2018 15:26:59 -0500
+Subject: [PATCH] Add support for powerpc64-*-linux-musl targets
+
+This patch ensures that 64-bit PowerPC musl targets use ELFv2 ABI on both
+endians.  It additionally adds a test that big endian PPC64 uses ELFv2 on
+musl.
+---
+ lib/Target/PowerPC/PPCTargetMachine.cpp | 4 ++++
+ test/CodeGen/PowerPC/ppc64-elf-abi.ll   | 1 +
+ 2 files changed, 5 insertions(+)
+
+diff --git a/test/CodeGen/PowerPC/ppc64-elf-abi.ll b/test/CodeGen/PowerPC/ppc64-elf-abi.ll
+index 1e17930304b..aa594b37b47 100644
+--- a/test/CodeGen/PowerPC/ppc64-elf-abi.ll
++++ b/test/CodeGen/PowerPC/ppc64-elf-abi.ll
+@@ -1,6 +1,7 @@
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s -check-prefix=CHECK-ELFv1
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -target-abi elfv1 < %s | FileCheck %s -check-prefix=CHECK-ELFv1
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -target-abi elfv2 < %s | FileCheck %s -check-prefix=CHECK-ELFv2
++; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-musl < %s | FileCheck %s -check-prefix=CHECK-ELFv2
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s -check-prefix=CHECK-ELFv2
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -target-abi elfv1 < %s | FileCheck %s -check-prefix=CHECK-ELFv1
+ ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -target-abi elfv2 < %s | FileCheck %s -check-prefix=CHECK-ELFv2
+-- 
+2.18.0
+
diff --git a/bootstrap/llvm16/python3-test.patch b/bootstrap/llvm16/python3-test.patch
new file mode 100644
index 000000000..76f13385d
--- /dev/null
+++ b/bootstrap/llvm16/python3-test.patch
@@ -0,0 +1,8 @@
+--- llvm-7.0.1.src/test/BugPoint/compile-custom.ll.py.old	2014-03-13 00:10:37.000000000 +0000
++++ llvm-7.0.1.src/test/BugPoint/compile-custom.ll.py	2019-03-10 03:48:48.600000000 +0000
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ from __future__ import print_function
+ 
diff --git a/bootstrap/llvm16/roundeven.patch b/bootstrap/llvm16/roundeven.patch
new file mode 100644
index 000000000..e052e4a86
--- /dev/null
+++ b/bootstrap/llvm16/roundeven.patch
@@ -0,0 +1,49 @@
+--- llvm-14.0.4.src/lib/Analysis/TargetLibraryInfo.cpp.old	2022-05-24 22:02:58.000000000 +0000
++++ llvm-14.0.4.src/lib/Analysis/TargetLibraryInfo.cpp	2022-07-06 01:38:22.016862561 +0000
+@@ -616,6 +616,13 @@
+     TLI.setUnavailable(LibFunc_statvfs64);
+     TLI.setUnavailable(LibFunc_tmpfile64);
+ 
++    // These functions are unavailable on musl.
++    if (T.isMusl()) {
++      TLI.setUnavailable(LibFunc_roundeven);
++      TLI.setUnavailable(LibFunc_roundevenf);
++      TLI.setUnavailable(LibFunc_roundevenl);
++    }
++
+     // Relaxed math functions are included in math-finite.h on Linux (GLIBC).
+     // Note that math-finite.h is no longer supported by top-of-tree GLIBC,
+     // so we keep these functions around just so that they're recognized by
+--- llvm-14.0.4.src/test/Transforms/InstCombine/double-float-shrink-2.ll.old	2022-05-24 22:02:58.000000000 +0000
++++ llvm-14.0.4.src/test/Transforms/InstCombine/double-float-shrink-2.ll	2022-07-06 02:03:20.657791057 +0000
+@@ -1,5 +1,5 @@
+ ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+-; RUN: opt < %s -passes=instcombine -S -mtriple "i386-pc-linux"     | FileCheck %s
++; RUN: opt < %s -passes=instcombine -S -mtriple "i386-pc-linux-gnu" | FileCheck %s
+ ; RUN: opt < %s -passes=instcombine -S -mtriple "i386-pc-win32"     | FileCheck %s
+ ; RUN: opt < %s -passes=instcombine -S -mtriple "x86_64-pc-win32"   | FileCheck %s
+ ; RUN: opt < %s -passes=instcombine -S -mtriple "i386-pc-mingw32"   | FileCheck %s
+--- llvm-14.0.4.src/test/ExecutionEngine/Interpreter/intrinsics.ll.old	2022-05-24 22:02:58.000000000 +0000
++++ llvm-14.0.4.src/test/ExecutionEngine/Interpreter/intrinsics.ll	2022-07-23 06:50:59.336665672 +0000
+@@ -13,8 +13,8 @@
+ declare double @llvm.trunc.f64(double)
+ declare float  @llvm.round.f32(float)
+ declare double @llvm.round.f64(double)
+-declare float  @llvm.roundeven.f32(float)
+-declare double @llvm.roundeven.f64(double)
++;declare float  @llvm.roundeven.f32(float)
++;declare double @llvm.roundeven.f64(double)
+ declare float  @llvm.copysign.f32(float, float)
+ declare double @llvm.copysign.f64(double, double)
+ 
+@@ -31,8 +31,8 @@
+   %trunc64 = call double @llvm.trunc.f64(double 0.000000e+00)
+   %round32 = call float @llvm.round.f32(float 0.000000e+00)
+   %round64 = call double @llvm.round.f64(double 0.000000e+00)
+-  %roundeven32 = call float @llvm.roundeven.f32(float 0.000000e+00)
+-  %roundeven64 = call double @llvm.roundeven.f64(double 0.000000e+00)
++  ;%roundeven32 = call float @llvm.roundeven.f32(float 0.000000e+00)
++  ;%roundeven64 = call double @llvm.roundeven.f64(double 0.000000e+00)
+   %copysign32 = call float @llvm.copysign.f32(float 0.000000e+00, float 0.000000e+00)
+   %copysign64 = call double @llvm.copysign.f64(double 0.000000e+00, double 0.000000e+00)
+   ret i32 0