Accepting request 922852 from home:aaronpuchert:llvm-next

- Update to version 13.0.0. * For details, see the release notes: - https://releases.llvm.org/13.0.0/docs/ReleaseNotes.html - https://releases.llvm.org/13.0.0/tools/clang/docs/ReleaseNotes.html - https://releases.llvm.org/13.0.0/tools/clang/tools/extra/docs/ReleaseNotes.html - https://releases.llvm.org/13.0.0/projects/libcxx/docs/ReleaseNotes.html - https://releases.llvm.org/13.0.0/tools/lld/docs/ReleaseNotes.html * New LLVM tools: - llvm-otool: Mach-O object file displaying tool. - llvm-sim: LLVM IR Similarity Visualizer. - llvm-tapi-diff: Diff tool for tbd files. - llvm-windres: Tool to manipulate Windows resources. * llvm-elfabi was removed. * New Clang tools: - clang-repl, an interactive interpreter for C/C++. - intercept-build, analyze-build: the former intercepts build commands to build a compilation database, the latter runs the static analyzer over all translation units. - scan-build-py: Python reimplementation of scan-build. - Rebase patches: * link-clang-shared.patch * llvm-do-not-install-static-libraries.patch * llvm-exegesis-link-dylib.patch - Drop patches that have landed upstream: * tablegen-test-link-static.patch - Run tests on more architectures, disable those that seem to hang. Don't run libcxx tests at all anymore because they take so long. - Relax constraints so that we can build on more machines. OBS-URL: https://build.opensuse.org/request/show/922852 OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/llvm13?expand=0&rev=1
2021-10-04 06:44:10 +00:00 · 2021-10-04 06:44:10 +00:00 · 6b6b4b3d80
commit 6b6b4b3d80
38 changed files with 5744 additions and 0 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,23 @@
+## Default LFS
+*.7z filter=lfs diff=lfs merge=lfs -text
+*.bsp filter=lfs diff=lfs merge=lfs -text
+*.bz2 filter=lfs diff=lfs merge=lfs -text
+*.gem filter=lfs diff=lfs merge=lfs -text
+*.gz filter=lfs diff=lfs merge=lfs -text
+*.jar filter=lfs diff=lfs merge=lfs -text
+*.lz filter=lfs diff=lfs merge=lfs -text
+*.lzma filter=lfs diff=lfs merge=lfs -text
+*.obscpio filter=lfs diff=lfs merge=lfs -text
+*.oxt filter=lfs diff=lfs merge=lfs -text
+*.pdf filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.rpm filter=lfs diff=lfs merge=lfs -text
+*.tbz filter=lfs diff=lfs merge=lfs -text
+*.tbz2 filter=lfs diff=lfs merge=lfs -text
+*.tgz filter=lfs diff=lfs merge=lfs -text
+*.ttf filter=lfs diff=lfs merge=lfs -text
+*.txz filter=lfs diff=lfs merge=lfs -text
+*.whl filter=lfs diff=lfs merge=lfs -text
+*.xz filter=lfs diff=lfs merge=lfs -text
+*.zip filter=lfs diff=lfs merge=lfs -text
+*.zst filter=lfs diff=lfs merge=lfs -text
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+.osc
--- a/CMake-Look-up-target-subcomponents-in-LLVM_AVAILABLE_LIBS.patch
+++ b/CMake-Look-up-target-subcomponents-in-LLVM_AVAILABLE_LIBS.patch
@ -0,0 +1,132 @@
+From b49307ef82196729e1ab2508b73fc7fc80192668 Mon Sep 17 00:00:00 2001
+From: Aaron Puchert <aaronpuchert@alice-dsl.net>
+Date: Sun, 14 Feb 2021 22:54:07 +0100
+Subject: [PATCH] [CMake] Look up target subcomponents in LLVM_AVAILABLE_LIBS
+
+In an installation using the all-contained libLLVM.so, individual
+components are not available as targets, so we have to look them up in
+LLVM_AVAILABLE_LIBS just like llvm_map_components_to_libnames does it.
+Here I don't think we need the capitalized names though because we know
+the right capitalization. But I might be wrong.
+
+This is required by dragonffi, who call llvm_map_components_to_libnames
+on a list containing ${LLVM_NATIVE_ARCH}. Downstream bug report:
+https://bugzilla.opensuse.org/show_bug.cgi?id=1180748.
+
+Differential Revision: https://reviews.llvm.org/D96670
+---
+ llvm/cmake/modules/LLVM-Config.cmake | 61 +++++++++++++---------------
+ 1 file changed, 28 insertions(+), 33 deletions(-)
+
+diff --git a/llvm/cmake/modules/LLVM-Config.cmake b/llvm/cmake/modules/LLVM-Config.cmake
+index 5d9ec79c7c56..1cd10993b903 100644
+--- a/llvm/cmake/modules/LLVM-Config.cmake
+++ b/llvm/cmake/modules/LLVM-Config.cmake
+@@ -125,47 +125,38 @@ endfunction(llvm_map_components_to_libraries)
+ # available and not a list of the components.
+ function(llvm_expand_pseudo_components out_components)
+   set( link_components ${ARGN} )
+  if(NOT LLVM_AVAILABLE_LIBS)
+    # Inside LLVM itself available libs are in a global property.
+    get_property(LLVM_AVAILABLE_LIBS GLOBAL PROPERTY LLVM_LIBS)
+  endif()
+   foreach(c ${link_components})
+     # add codegen, asmprinter, asmparser, disassembler
+     list(FIND LLVM_TARGETS_TO_BUILD ${c} idx)
+     if( NOT idx LESS 0 )
+-      if( TARGET LLVM${c}CodeGen )
+      list(FIND LLVM_AVAILABLE_LIBS LLVM${c}CodeGen lib_idx)
+      if( lib_idx GREATER_EQUAL 0 )
+         list(APPEND expanded_components "${c}CodeGen")
+       else()
+-        if( TARGET LLVM${c} )
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${c} lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+           list(APPEND expanded_components "${c}")
+         else()
+           message(FATAL_ERROR "Target ${c} is not in the set of libraries.")
+         endif()
+       endif()
+-      if( TARGET LLVM${c}AsmPrinter )
+-        list(APPEND expanded_components "${c}AsmPrinter")
+-      endif()
+-      if( TARGET LLVM${c}AsmParser )
+-        list(APPEND expanded_components "${c}AsmParser")
+-      endif()
+-      if( TARGET LLVM${c}Desc )
+-        list(APPEND expanded_components "${c}Desc")
+-      endif()
+-      if( TARGET LLVM${c}Disassembler )
+-        list(APPEND expanded_components "${c}Disassembler")
+-      endif()
+-      if( TARGET LLVM${c}Info )
+-        list(APPEND expanded_components "${c}Info")
+-      endif()
+-      if( TARGET LLVM${c}Utils )
+-        list(APPEND expanded_components "${c}Utils")
+-      endif()
+      foreach(subcomponent IN ITEMS AsmPrinter AsmParser Desc Disassembler Info Utils)
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${c}${subcomponent} lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+          list(APPEND expanded_components "${c}${subcomponent}")
+        endif()
+      endforeach()
+     elseif( c STREQUAL "nativecodegen" )
+-      if( TARGET LLVM${LLVM_NATIVE_ARCH}CodeGen )
+-        list(APPEND expanded_components "${LLVM_NATIVE_ARCH}CodeGen")
+-      endif()
+-      if( TARGET LLVM${LLVM_NATIVE_ARCH}Desc )
+-        list(APPEND expanded_components "${LLVM_NATIVE_ARCH}Desc")
+-      endif()
+-      if( TARGET LLVM${LLVM_NATIVE_ARCH}Info )
+-        list(APPEND expanded_components "${LLVM_NATIVE_ARCH}Info")
+-      endif()
+      foreach(subcomponent IN ITEMS CodeGen Desc Info)
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${LLVM_NATIVE_ARCH}${subcomponent} lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+          list(APPEND expanded_components "${LLVM_NATIVE_ARCH}${subcomponent}")
+        endif()
+      endforeach()
+     elseif( c STREQUAL "AllTargetsCodeGens" )
+       # Link all the codegens from all the targets
+       foreach(t ${LLVM_TARGETS_TO_BUILD})
+@@ -176,28 +167,32 @@ function(llvm_expand_pseudo_components out_components)
+     elseif( c STREQUAL "AllTargetsAsmParsers" )
+       # Link all the asm parsers from all the targets
+       foreach(t ${LLVM_TARGETS_TO_BUILD})
+-        if( TARGET LLVM${t}AsmParser )
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${t}AsmParser lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+           list(APPEND expanded_components "${t}AsmParser")
+         endif()
+       endforeach(t)
+     elseif( c STREQUAL "AllTargetsDescs" )
+       # Link all the descs from all the targets
+       foreach(t ${LLVM_TARGETS_TO_BUILD})
+-        if( TARGET LLVM${t}Desc )
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${t}Desc lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+           list(APPEND expanded_components "${t}Desc")
+         endif()
+       endforeach(t)
+     elseif( c STREQUAL "AllTargetsDisassemblers" )
+       # Link all the disassemblers from all the targets
+       foreach(t ${LLVM_TARGETS_TO_BUILD})
+-        if( TARGET LLVM${t}Disassembler )
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${t}Disassembler lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+           list(APPEND expanded_components "${t}Disassembler")
+         endif()
+       endforeach(t)
+     elseif( c STREQUAL "AllTargetsInfos" )
+       # Link all the infos from all the targets
+       foreach(t ${LLVM_TARGETS_TO_BUILD})
+-        if( TARGET LLVM${t}Info )
+        list(FIND LLVM_AVAILABLE_LIBS LLVM${t}Info lib_idx)
+        if( lib_idx GREATER_EQUAL 0 )
+           list(APPEND expanded_components "${t}Info")
+         endif()
+       endforeach(t)
+-- 
+2.30.0
+
--- a/45
+++ b/45
@ -0,0 +1,45 @@
+<?xml version="1.0"?>
+<constraints>
+  <hardware>
+    <disk>
+      <size unit="G">35</size>
+    </disk>
+    <memory>
+      <size unit="M">4096</size>
+    </memory>
+  </hardware>
+  <overwrite>
+    <!-- 
+      We have disabled debuginfo on 32 bit architecture because they simply can no address enough memory to link llvm libraries with it.
+      Without debuginfo the disk and memory requirements are much lower.
+    -->
+    <conditions>
+      <arch>armv6l</arch>
+      <arch>armv7l</arch>
+      <arch>i586</arch>
+      <arch>ppc</arch>
+      <arch>s390</arch>
+    </conditions>
+    <hardware>
+      <disk>
+        <size unit="G">10</size>
+      </disk>
+      <memory>
+        <size unit="M">2048</size>
+      </memory>
+    </hardware>
+  </overwrite>
+  <overwrite>
+    <conditions>
+      <arch>riscv64</arch>
+    </conditions>
+    <hardware>
+      <disk>
+        <size unit="G">52</size>
+      </disk>
+      <memory>
+        <size unit="M">10000</size>
+      </memory>
+    </hardware>
+  </overwrite>
+</constraints>
--- a/assume-opensuse.patch
+++ b/assume-opensuse.patch
@ -0,0 +1,34 @@
+Index: clang-12.0.0rc1.src/lib/Driver/Distro.cpp
+===================================================================
+--- clang-12.0.0rc1.src.orig/lib/Driver/Distro.cpp
+++ clang-12.0.0rc1.src/lib/Driver/Distro.cpp
+@@ -93,6 +93,8 @@ static Distro::DistroType DetectLsbRelease...
+ }
+ 
+ static Distro::DistroType DetectDistro(llvm::vfs::FileSystem &VFS) {
+    return Distro::OpenSUSE;
+/*
+   Distro::DistroType Version = Distro::UnknownDistro;
+
+   // Newer freedesktop.org's compilant systemd-based systems
+@@ -200,7 +202,7 @@ static Distro::DistroType DetectDistro(l
+   if (VFS.exists("/etc/gentoo-release"))
+     return Distro::Gentoo;
+ 
+-  return Distro::UnknownDistro;
+  return Distro::UnknownDistro;*/
+ }
+ 
+ static Distro::DistroType GetDistro(llvm::vfs::FileSystem &VFS,
+Index: clang-12.0.0rc1.src/unittests/Driver/CMakeLists.txt
+===================================================================
+--- clang-12.0.0rc1.src.orig/unittests/Driver/CMakeLists.txt
+++ clang-12.0.0rc1.src/unittests/Driver/CMakeLists.txt
+@@ -5,7 +5,6 @@ set(LLVM_LINK_COMPONENTS
+   )
+ 
+ add_clang_unittest(ClangDriverTests
+-  DistroTest.cpp
+   ToolChainTest.cpp
+   ModuleCacheTest.cpp
+   MultilibTest.cpp
--- a/baselibs.conf
+++ b/baselibs.conf
@ -0,0 +1,12 @@
+libLLVM13
+libclang13
+libLTO13
+llvm13-devel
+  provides "llvm-devel-<targettype> = <version>"
+  conflicts "otherproviders(llvm-devel-<targettype>)"
+clang13-devel
+  provides "clang-devel-<targettype> = <version>"
+  conflicts "otherproviders(clang-devel-<targettype>)"
+llvm13-LTO-devel
+  provides "llvm-LTO-devel-<targettype> = <version>"
+  conflicts "otherproviders(llvm-LTO-devel-<targettype>)"
--- a/clang-13.0.0.src.tar.xz
+++ b/clang-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5d611cbb06cfb6626be46eb2f23d003b2b80f40182898daa54b1c4e8b5b9e17e
+size 17846828
--- a/clang-docs-13.0.0.src.tar.xz
+++ b/clang-docs-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53ce5672cfa261948815112bfd515a564246dcbc725a030ce0dca2e2cc4ab583
+size 1327856
--- a/clang-resourcedirs.patch
+++ b/clang-resourcedirs.patch
@ -0,0 +1,13 @@
+Index: cfe-6.0.0rc1.src/lib/Driver/Driver.cpp
+===================================================================
+--- cfe-6.0.0rc1.src.orig/lib/Driver/Driver.cpp
+++ cfe-6.0.0rc1.src/lib/Driver/Driver.cpp
+@@ -115,7 +115,7 @@ Driver::Driver(StringRef ClangExecutable
+   // Dir is bin/ or lib/, depending on where BinaryPath is.
+   std::string Dir = std::string(llvm::sys::path::parent_path(BinaryPath));
+ 
+-  SmallString<128> P(Dir);
+  SmallString<128> P((Dir != "") ? Dir : "/usr/bin/");
+   if (CustomResourceDir != "") {
+     llvm::sys::path::append(P, CustomResourceDir);
+   } else {
--- a/clang-tools-extra-13.0.0.src.tar.xz
+++ b/clang-tools-extra-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:428b6060a28b22adf0cdf5d827abbc2ba81809f4661ede3d02b1d3fedaa3ead5
+size 2739604
--- a/compact_unwind_encoding.h
+++ b/compact_unwind_encoding.h
@ -0,0 +1,477 @@
+//===------------------ mach-o/compact_unwind_encoding.h ------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// Darwin's alternative to DWARF based unwind encodings.
+//
+//===----------------------------------------------------------------------===//
+
+
+#ifndef __COMPACT_UNWIND_ENCODING__
+#define __COMPACT_UNWIND_ENCODING__
+
+#include <stdint.h>
+
+//
+// Compilers can emit standard DWARF FDEs in the __TEXT,__eh_frame section
+// of object files. Or compilers can emit compact unwind information in
+// the __LD,__compact_unwind section.
+//
+// When the linker creates a final linked image, it will create a
+// __TEXT,__unwind_info section.  This section is a small and fast way for the
+// runtime to access unwind info for any given function.  If the compiler
+// emitted compact unwind info for the function, that compact unwind info will
+// be encoded in the __TEXT,__unwind_info section. If the compiler emitted
+// DWARF unwind info, the __TEXT,__unwind_info section will contain the offset
+// of the FDE in the __TEXT,__eh_frame section in the final linked image.
+//
+// Note: Previously, the linker would transform some DWARF unwind infos into
+//       compact unwind info.  But that is fragile and no longer done.
+
+
+//
+// The compact unwind endoding is a 32-bit value which encoded in an
+// architecture specific way, which registers to restore from where, and how
+// to unwind out of the function.
+//
+typedef uint32_t compact_unwind_encoding_t;
+
+
+// architecture independent bits
+enum {
+    UNWIND_IS_NOT_FUNCTION_START           = 0x80000000,
+    UNWIND_HAS_LSDA                        = 0x40000000,
+    UNWIND_PERSONALITY_MASK                = 0x30000000,
+};
+
+
+
+
+//
+// x86
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 0=old, 1=ebp based, 2=stack-imm, 3=stack-ind, 4=DWARF
+//  ebp based:
+//        15-bits (5*3-bits per reg) register permutation
+//        8-bits for stack offset
+//  frameless:
+//        8-bits stack size
+//        3-bits stack adjust
+//        3-bits register count
+//        10-bits register permutation
+//
+enum {
+    UNWIND_X86_MODE_MASK                         = 0x0F000000,
+    UNWIND_X86_MODE_EBP_FRAME                    = 0x01000000,
+    UNWIND_X86_MODE_STACK_IMMD                   = 0x02000000,
+    UNWIND_X86_MODE_STACK_IND                    = 0x03000000,
+    UNWIND_X86_MODE_DWARF                        = 0x04000000,
+
+    UNWIND_X86_EBP_FRAME_REGISTERS               = 0x00007FFF,
+    UNWIND_X86_EBP_FRAME_OFFSET                  = 0x00FF0000,
+
+    UNWIND_X86_FRAMELESS_STACK_SIZE              = 0x00FF0000,
+    UNWIND_X86_FRAMELESS_STACK_ADJUST            = 0x0000E000,
+    UNWIND_X86_FRAMELESS_STACK_REG_COUNT         = 0x00001C00,
+    UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION   = 0x000003FF,
+
+    UNWIND_X86_DWARF_SECTION_OFFSET              = 0x00FFFFFF,
+};
+
+enum {
+    UNWIND_X86_REG_NONE     = 0,
+    UNWIND_X86_REG_EBX      = 1,
+    UNWIND_X86_REG_ECX      = 2,
+    UNWIND_X86_REG_EDX      = 3,
+    UNWIND_X86_REG_EDI      = 4,
+    UNWIND_X86_REG_ESI      = 5,
+    UNWIND_X86_REG_EBP      = 6,
+};
+
+//
+// For x86 there are four modes for the compact unwind encoding:
+// UNWIND_X86_MODE_EBP_FRAME:
+//    EBP based frame where EBP is push on stack immediately after return address,
+//    then ESP is moved to EBP. Thus, to unwind ESP is restored with the current
+//    EPB value, then EBP is restored by popping off the stack, and the return
+//    is done by popping the stack once more into the pc.
+//    All non-volatile registers that need to be restored must have been saved
+//    in a small range in the stack that starts EBP-4 to EBP-1020.  The offset/4
+//    is encoded in the UNWIND_X86_EBP_FRAME_OFFSET bits.  The registers saved
+//    are encoded in the UNWIND_X86_EBP_FRAME_REGISTERS bits as five 3-bit entries.
+//    Each entry contains which register to restore.
+// UNWIND_X86_MODE_STACK_IMMD:
+//    A "frameless" (EBP not used as frame pointer) function with a small 
+//    constant stack size.  To return, a constant (encoded in the compact
+//    unwind encoding) is added to the ESP. Then the return is done by
+//    popping the stack into the pc.
+//    All non-volatile registers that need to be restored must have been saved
+//    on the stack immediately after the return address.  The stack_size/4 is
+//    encoded in the UNWIND_X86_FRAMELESS_STACK_SIZE (max stack size is 1024).
+//    The number of registers saved is encoded in UNWIND_X86_FRAMELESS_STACK_REG_COUNT.
+//    UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+//    saved and their order.
+// UNWIND_X86_MODE_STACK_IND:
+//    A "frameless" (EBP not used as frame pointer) function large constant 
+//    stack size.  This case is like the previous, except the stack size is too
+//    large to encode in the compact unwind encoding.  Instead it requires that 
+//    the function contains "subl $nnnnnnnn,ESP" in its prolog.  The compact 
+//    encoding contains the offset to the nnnnnnnn value in the function in
+//    UNWIND_X86_FRAMELESS_STACK_SIZE.  
+// UNWIND_X86_MODE_DWARF:
+//    No compact unwind encoding is available.  Instead the low 24-bits of the
+//    compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+//    This mode is never used in object files.  It is only generated by the 
+//    linker in final linked images which have only DWARF unwind info for a
+//    function.
+//
+// The permutation encoding is a Lehmer code sequence encoded into a
+// single variable-base number so we can encode the ordering of up to
+// six registers in a 10-bit space.
+//
+// The following is the algorithm used to create the permutation encoding used
+// with frameless stacks.  It is passed the number of registers to be saved and
+// an array of the register numbers saved.
+//
+//uint32_t permute_encode(uint32_t registerCount, const uint32_t registers[6])
+//{
+//    uint32_t renumregs[6];
+//    for (int i=6-registerCount; i < 6; ++i) {
+//        int countless = 0;
+//        for (int j=6-registerCount; j < i; ++j) {
+//            if ( registers[j] < registers[i] )
+//                ++countless;
+//        }
+//        renumregs[i] = registers[i] - countless -1;
+//    }
+//    uint32_t permutationEncoding = 0;
+//    switch ( registerCount ) {
+//        case 6:
+//            permutationEncoding |= (120*renumregs[0] + 24*renumregs[1]
+//                                    + 6*renumregs[2] + 2*renumregs[3]
+//                                      + renumregs[4]);
+//            break;
+//        case 5:
+//            permutationEncoding |= (120*renumregs[1] + 24*renumregs[2]
+//                                    + 6*renumregs[3] + 2*renumregs[4]
+//                                      + renumregs[5]);
+//            break;
+//        case 4:
+//            permutationEncoding |= (60*renumregs[2] + 12*renumregs[3]
+//                                   + 3*renumregs[4] + renumregs[5]);
+//            break;
+//        case 3:
+//            permutationEncoding |= (20*renumregs[3] + 4*renumregs[4]
+//                                     + renumregs[5]);
+//            break;
+//        case 2:
+//            permutationEncoding |= (5*renumregs[4] + renumregs[5]);
+//            break;
+//        case 1:
+//            permutationEncoding |= (renumregs[5]);
+//            break;
+//    }
+//    return permutationEncoding;
+//}
+//
+
+
+
+
+//
+// x86_64
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 0=old, 1=rbp based, 2=stack-imm, 3=stack-ind, 4=DWARF
+//  rbp based:
+//        15-bits (5*3-bits per reg) register permutation
+//        8-bits for stack offset
+//  frameless:
+//        8-bits stack size
+//        3-bits stack adjust
+//        3-bits register count
+//        10-bits register permutation
+//
+enum {
+    UNWIND_X86_64_MODE_MASK                         = 0x0F000000,
+    UNWIND_X86_64_MODE_RBP_FRAME                    = 0x01000000,
+    UNWIND_X86_64_MODE_STACK_IMMD                   = 0x02000000,
+    UNWIND_X86_64_MODE_STACK_IND                    = 0x03000000,
+    UNWIND_X86_64_MODE_DWARF                        = 0x04000000,
+
+    UNWIND_X86_64_RBP_FRAME_REGISTERS               = 0x00007FFF,
+    UNWIND_X86_64_RBP_FRAME_OFFSET                  = 0x00FF0000,
+
+    UNWIND_X86_64_FRAMELESS_STACK_SIZE              = 0x00FF0000,
+    UNWIND_X86_64_FRAMELESS_STACK_ADJUST            = 0x0000E000,
+    UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT         = 0x00001C00,
+    UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION   = 0x000003FF,
+
+    UNWIND_X86_64_DWARF_SECTION_OFFSET              = 0x00FFFFFF,
+};
+
+enum {
+    UNWIND_X86_64_REG_NONE       = 0,
+    UNWIND_X86_64_REG_RBX        = 1,
+    UNWIND_X86_64_REG_R12        = 2,
+    UNWIND_X86_64_REG_R13        = 3,
+    UNWIND_X86_64_REG_R14        = 4,
+    UNWIND_X86_64_REG_R15        = 5,
+    UNWIND_X86_64_REG_RBP        = 6,
+};
+//
+// For x86_64 there are four modes for the compact unwind encoding:
+// UNWIND_X86_64_MODE_RBP_FRAME:
+//    RBP based frame where RBP is push on stack immediately after return address,
+//    then RSP is moved to RBP. Thus, to unwind RSP is restored with the current 
+//    EPB value, then RBP is restored by popping off the stack, and the return 
+//    is done by popping the stack once more into the pc.
+//    All non-volatile registers that need to be restored must have been saved
+//    in a small range in the stack that starts RBP-8 to RBP-2040.  The offset/8 
+//    is encoded in the UNWIND_X86_64_RBP_FRAME_OFFSET bits.  The registers saved
+//    are encoded in the UNWIND_X86_64_RBP_FRAME_REGISTERS bits as five 3-bit entries.
+//    Each entry contains which register to restore.  
+// UNWIND_X86_64_MODE_STACK_IMMD:
+//    A "frameless" (RBP not used as frame pointer) function with a small 
+//    constant stack size.  To return, a constant (encoded in the compact 
+//    unwind encoding) is added to the RSP. Then the return is done by 
+//    popping the stack into the pc.
+//    All non-volatile registers that need to be restored must have been saved
+//    on the stack immediately after the return address.  The stack_size/8 is
+//    encoded in the UNWIND_X86_64_FRAMELESS_STACK_SIZE (max stack size is 2048).
+//    The number of registers saved is encoded in UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT.
+//    UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION constains which registers were
+//    saved and their order.  
+// UNWIND_X86_64_MODE_STACK_IND:
+//    A "frameless" (RBP not used as frame pointer) function large constant 
+//    stack size.  This case is like the previous, except the stack size is too
+//    large to encode in the compact unwind encoding.  Instead it requires that 
+//    the function contains "subq $nnnnnnnn,RSP" in its prolog.  The compact 
+//    encoding contains the offset to the nnnnnnnn value in the function in
+//    UNWIND_X86_64_FRAMELESS_STACK_SIZE.  
+// UNWIND_X86_64_MODE_DWARF:
+//    No compact unwind encoding is available.  Instead the low 24-bits of the
+//    compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+//    This mode is never used in object files.  It is only generated by the 
+//    linker in final linked images which have only DWARF unwind info for a
+//    function.
+//
+
+
+// ARM64
+//
+// 1-bit: start
+// 1-bit: has lsda
+// 2-bit: personality index
+//
+// 4-bits: 4=frame-based, 3=DWARF, 2=frameless
+//  frameless:
+//        12-bits of stack size
+//  frame-based:
+//        4-bits D reg pairs saved
+//        5-bits X reg pairs saved
+//  DWARF:
+//        24-bits offset of DWARF FDE in __eh_frame section
+//
+enum {
+    UNWIND_ARM64_MODE_MASK                     = 0x0F000000,
+    UNWIND_ARM64_MODE_FRAMELESS                = 0x02000000,
+    UNWIND_ARM64_MODE_DWARF                    = 0x03000000,
+    UNWIND_ARM64_MODE_FRAME                    = 0x04000000,
+
+    UNWIND_ARM64_FRAME_X19_X20_PAIR            = 0x00000001,
+    UNWIND_ARM64_FRAME_X21_X22_PAIR            = 0x00000002,
+    UNWIND_ARM64_FRAME_X23_X24_PAIR            = 0x00000004,
+    UNWIND_ARM64_FRAME_X25_X26_PAIR            = 0x00000008,
+    UNWIND_ARM64_FRAME_X27_X28_PAIR            = 0x00000010,
+    UNWIND_ARM64_FRAME_D8_D9_PAIR              = 0x00000100,
+    UNWIND_ARM64_FRAME_D10_D11_PAIR            = 0x00000200,
+    UNWIND_ARM64_FRAME_D12_D13_PAIR            = 0x00000400,
+    UNWIND_ARM64_FRAME_D14_D15_PAIR            = 0x00000800,
+
+    UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK     = 0x00FFF000,
+    UNWIND_ARM64_DWARF_SECTION_OFFSET          = 0x00FFFFFF,
+};
+// For arm64 there are three modes for the compact unwind encoding:
+// UNWIND_ARM64_MODE_FRAME:
+//    This is a standard arm64 prolog where FP/LR are immediately pushed on the
+//    stack, then SP is copied to FP. If there are any non-volatile registers
+//    saved, then are copied into the stack frame in pairs in a contiguous
+//    range right below the saved FP/LR pair.  Any subset of the five X pairs 
+//    and four D pairs can be saved, but the memory layout must be in register
+//    number order.  
+// UNWIND_ARM64_MODE_FRAMELESS:
+//    A "frameless" leaf function, where FP/LR are not saved. The return address 
+//    remains in LR throughout the function. If any non-volatile registers
+//    are saved, they must be pushed onto the stack before any stack space is
+//    allocated for local variables.  The stack sized (including any saved
+//    non-volatile registers) divided by 16 is encoded in the bits 
+//    UNWIND_ARM64_FRAMELESS_STACK_SIZE_MASK.
+// UNWIND_ARM64_MODE_DWARF:
+//    No compact unwind encoding is available.  Instead the low 24-bits of the
+//    compact encoding is the offset of the DWARF FDE in the __eh_frame section.
+//    This mode is never used in object files.  It is only generated by the 
+//    linker in final linked images which have only DWARF unwind info for a
+//    function.
+//
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Relocatable Object Files: __LD,__compact_unwind
+//
+////////////////////////////////////////////////////////////////////////////////
+
+//
+// A compiler can generated compact unwind information for a function by adding
+// a "row" to the __LD,__compact_unwind section.  This section has the 
+// S_ATTR_DEBUG bit set, so the section will be ignored by older linkers. 
+// It is removed by the new linker, so never ends up in final executables. 
+// This section is a table, initially with one row per function (that needs 
+// unwind info).  The table columns and some conceptual entries are:
+//
+//     range-start               pointer to start of function/range
+//     range-length              
+//     compact-unwind-encoding   32-bit encoding  
+//     personality-function      or zero if no personality function
+//     lsda                      or zero if no LSDA data
+//
+// The length and encoding fields are 32-bits.  The other are all pointer sized. 
+//
+// In x86_64 assembly, these entry would look like:
+//
+//     .section __LD,__compact_unwind,regular,debug
+//
+//     #compact unwind for _foo
+//     .quad    _foo
+//     .set     L1,LfooEnd-_foo
+//     .long    L1
+//     .long    0x01010001
+//     .quad    0
+//     .quad    0
+//
+//     #compact unwind for _bar
+//     .quad    _bar
+//     .set     L2,LbarEnd-_bar
+//     .long    L2
+//     .long    0x01020011
+//     .quad    __gxx_personality
+//     .quad    except_tab1
+//
+//
+// Notes: There is no need for any labels in the the __compact_unwind section.  
+//        The use of the .set directive is to force the evaluation of the 
+//        range-length at assembly time, instead of generating relocations.
+//
+// To support future compiler optimizations where which non-volatile registers 
+// are saved changes within a function (e.g. delay saving non-volatiles until
+// necessary), there can by multiple lines in the __compact_unwind table for one
+// function, each with a different (non-overlapping) range and each with 
+// different compact unwind encodings that correspond to the non-volatiles 
+// saved at that range of the function.
+//
+// If a particular function is so wacky that there is no compact unwind way
+// to encode it, then the compiler can emit traditional DWARF unwind info.  
+// The runtime will use which ever is available.
+//
+// Runtime support for compact unwind encodings are only available on 10.6 
+// and later.  So, the compiler should not generate it when targeting pre-10.6. 
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Final Linked Images: __TEXT,__unwind_info
+//
+////////////////////////////////////////////////////////////////////////////////
+
+//
+// The __TEXT,__unwind_info section is laid out for an efficient two level lookup.
+// The header of the section contains a coarse index that maps function address
+// to the page (4096 byte block) containing the unwind info for that function.  
+//
+
+#define UNWIND_SECTION_VERSION 1
+struct unwind_info_section_header
+{
+    uint32_t    version;            // UNWIND_SECTION_VERSION
+    uint32_t    commonEncodingsArraySectionOffset;
+    uint32_t    commonEncodingsArrayCount;
+    uint32_t    personalityArraySectionOffset;
+    uint32_t    personalityArrayCount;
+    uint32_t    indexSectionOffset;
+    uint32_t    indexCount;
+    // compact_unwind_encoding_t[]
+    // uint32_t personalities[]
+    // unwind_info_section_header_index_entry[]
+    // unwind_info_section_header_lsda_index_entry[]
+};
+
+struct unwind_info_section_header_index_entry
+{
+    uint32_t        functionOffset;
+    uint32_t        secondLevelPagesSectionOffset;  // section offset to start of regular or compress page
+    uint32_t        lsdaIndexArraySectionOffset;    // section offset to start of lsda_index array for this range
+};
+
+struct unwind_info_section_header_lsda_index_entry
+{
+    uint32_t        functionOffset;
+    uint32_t        lsdaOffset;
+};
+
+//
+// There are two kinds of second level index pages: regular and compressed.
+// A compressed page can hold up to 1021 entries, but it cannot be used
+// if too many different encoding types are used.  The regular page holds
+// 511 entries.
+//
+
+struct unwind_info_regular_second_level_entry
+{
+    uint32_t                    functionOffset;
+    compact_unwind_encoding_t    encoding;
+};
+
+#define UNWIND_SECOND_LEVEL_REGULAR 2
+struct unwind_info_regular_second_level_page_header
+{
+    uint32_t    kind;    // UNWIND_SECOND_LEVEL_REGULAR
+    uint16_t    entryPageOffset;
+    uint16_t    entryCount;
+    // entry array
+};
+
+#define UNWIND_SECOND_LEVEL_COMPRESSED 3
+struct unwind_info_compressed_second_level_page_header
+{
+    uint32_t    kind;    // UNWIND_SECOND_LEVEL_COMPRESSED
+    uint16_t    entryPageOffset;
+    uint16_t    entryCount;
+    uint16_t    encodingsPageOffset;
+    uint16_t    encodingsCount;
+    // 32-bit entry array
+    // encodings array
+};
+
+#define UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entry)            (entry & 0x00FFFFFF)
+#define UNWIND_INFO_COMPRESSED_ENTRY_ENCODING_INDEX(entry)        ((entry >> 24) & 0xFF)
+
+
+
+#endif
+
--- a/compiler-rt-13.0.0.src.tar.xz
+++ b/compiler-rt-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4c3602d76c7868a96b30c36165c4b7643e2a20173fced7e071b4baeb2d74db3f
+size 2287616
--- a/default-to-i586.patch
+++ b/default-to-i586.patch
@ -0,0 +1,15 @@
+Index: cfe-6.0.0rc1.src/lib/Driver/ToolChains/Arch/X86.cpp
+===================================================================
+--- cfe-6.0.0rc1.src.orig/lib/Driver/ToolChains/Arch/X86.cpp
+++ cfe-6.0.0rc1.src/lib/Driver/ToolChains/Arch/X86.cpp
+@@ -102,8 +102,8 @@ const char *x86::getX86TargetCPU(const A
+   case llvm::Triple::FreeBSD:
+     return "i686";
+   default:
+-    // Fallback to p4.
+-    return "pentium4";
+    // Fallback to i586.
+    return "i586";
+   }
+ }
+ 
--- a/libcxx-13.0.0.src.tar.xz
+++ b/libcxx-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3682f16ce33bb0a8951fc2c730af2f9b01a13b71b2b0dc1ae1e7034c7d86ca1a
+size 2086032
--- a/libcxxabi-13.0.0.src.tar.xz
+++ b/libcxxabi-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:becd5f1cd2c03cd6187558e9b4dc8a80b6d774ff2829fede88aa1576c5234ce3
+size 554780
--- a/link-clang-shared.patch
+++ b/link-clang-shared.patch
@ -0,0 +1,58 @@
+diff --git a/clang/tools/c-index-test/CMakeLists.txt b/clang/tools/c-index-test/CMakeLists.txt
+index ceef4b08637..606149ad74f 100644
+--- a/clang/tools/c-index-test/CMakeLists.txt
+++ b/clang/tools/c-index-test/CMakeLists.txt
+@@ -18,6 +18,9 @@ if (LLVM_BUILD_STATIC)
+   target_link_libraries(c-index-test
+     PRIVATE
+     libclang_static
+  )
+  clang_target_link_libraries(c-index-test
+    PRIVATE
+     clangCodeGen
+     clangIndex
+   )
+@@ -25,6 +28,9 @@ else()
+   target_link_libraries(c-index-test
+     PRIVATE
+     libclang
+  )
+  clang_target_link_libraries(c-index-test
+    PRIVATE
+     clangAST
+     clangBasic
+     clangCodeGen
+diff --git a/clang/tools/libclang/CMakeLists.txt b/clang/tools/libclang/CMakeLists.txt
+index 613ead1a36b..f86be77b8e7 100644
+--- a/clang/tools/libclang/CMakeLists.txt
+++ b/clang/tools/libclang/CMakeLists.txt
+@@ -33,7 +33,7 @@ set(SOURCES
+   ../../include/clang-c/Index.h
+   )
+ 
+-set(LIBS
+set(CLANG_LIB_DEPS
+   clangAST
+   clangBasic
+   clangDriver
+@@ -46,7 +46,7 @@ set(LIBS
+ )
+ 
+ if (CLANG_ENABLE_ARCMT)
+-  list(APPEND LIBS clangARCMigrate)
+  list(APPEND CLANG_LIB_DEPS clangARCMigrate)
+ endif ()
+ 
+ if (HAVE_LIBDL)
+@@ -108,6 +108,11 @@ add_clang_library(libclang ${ENABLE_SHARED} ${ENABLE_STATIC} INSTALL_WITH_TOOLCH
+   Support
+   )
+ 
+clang_target_link_libraries(libclang
+  PRIVATE
+  ${CLANG_LIB_DEPS}
+  )
+
+ if(ENABLE_STATIC)
+   foreach(name libclang obj.libclang libclang_static)
+     if (TARGET ${name})
--- a/link-clang-tools-extra-shared.patch
+++ b/link-clang-tools-extra-shared.patch
@ -0,0 +1,48 @@
+diff --git a/clang-tools-extra/clang-include-fixer/plugin/CMakeLists.txt b/clang-tools-extra/clang-include-fixer/plugin/CMakeLists.txt
+index 6d0328ed831..d531e44743a 100644
+--- a/clang-tools-extra/clang-include-fixer/plugin/CMakeLists.txt
+++ b/clang-tools-extra/clang-include-fixer/plugin/CMakeLists.txt
+@@ -2,15 +2,18 @@ add_clang_library(clangIncludeFixerPlugin
+   IncludeFixerPlugin.cpp
+ 
+   LINK_LIBS
+  clangIncludeFixer
+  ${LLVM_PTHREAD_LIB}
+
+  DEPENDS
+  omp_gen
+  )
+clang_target_link_libraries(clangIncludeFixerPlugin
+  PRIVATE
+   clangAST
+   clangBasic
+   clangFrontend
+-  clangIncludeFixer
+   clangParse
+   clangSema
+   clangTooling
+-  ${LLVM_PTHREAD_LIB}
+-
+-  DEPENDS
+-  omp_gen
+   )
+diff --git a/clang-tools-extra/clangd/refactor/tweaks/CMakeLists.txt b/clang-tools-extra/clangd/refactor/tweaks/CMakeLists.txt
+index 8f708cacfdf..b08e9cee954 100644
+--- a/clang-tools-extra/clangd/refactor/tweaks/CMakeLists.txt
+++ b/clang-tools-extra/clangd/refactor/tweaks/CMakeLists.txt
+@@ -27,10 +27,13 @@ add_clang_library(clangDaemonTweaks OBJECT
+   SwapIfBranches.cpp
+ 
+   LINK_LIBS
+-  clangAST
+-  clangBasic
+   clangDaemon
+   clangdSupport
+  )
+
+clang_target_link_libraries(clangDaemonTweaks INTERFACE
+  clangAST
+  clangBasic
+   clangFormat
+   clangLex
+   clangToolingCore
--- a/lld-13.0.0.src.tar.xz
+++ b/lld-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:20d1900bcd64ff62047291f6edb6ba2fed34d782675ff68713bf0c2fc9e69386
+size 1472476
--- a/lld-default-sha1.patch
+++ b/lld-default-sha1.patch
@ -0,0 +1,13 @@
+Index: lld-10.0.0.src/ELF/Driver.cpp
+===================================================================
+--- lld-10.0.0.src.orig/ELF/Driver.cpp
+++ lld-10.0.0.src/ELF/Driver.cpp
+@@ -693,7 +693,7 @@ getBuildId(opt::InputArgList &args) {
+     return {BuildIdKind::None, {}};
+ 
+   if (arg->getOption().getID() == OPT_build_id)
+-    return {BuildIdKind::Fast, {}};
+    return {BuildIdKind::Sha1, {}};
+ 
+   StringRef s = arg->getValue();
+   if (s == "fast")
--- a/lldb-13.0.0.src.tar.xz
+++ b/lldb-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:24c65bd5ec0d7cbc37bafdd7533b1783352708bf6338c403a72f47884e406dbd
+size 9905788
--- a/lldb-cmake.patch
+++ b/lldb-cmake.patch
@ -0,0 +1,13 @@
+Index: lldb-10.0.0rc1.src/source/Host/CMakeLists.txt
+===================================================================
+--- lldb-10.0.0rc1.src.orig/source/Host/CMakeLists.txt
+++ lldb-10.0.0rc1.src/source/Host/CMakeLists.txt
+@@ -143,6 +143,8 @@ endif()
+ set(EXTRA_LIBS)
+ if (CMAKE_SYSTEM_NAME MATCHES "NetBSD")
+   list(APPEND EXTRA_LIBS kvm)
+elseif (CMAKE_SYSTEM_NAME MATCHES "Linux")
+  list(APPEND EXTRA_LIBS dl pthread)
+ endif()
+ if (LLDB_ENABLE_LIBXML2)
+   list(APPEND EXTRA_LIBS ${LIBXML2_LIBRARIES})
--- a/llvm-13.0.0.src.tar.xz
+++ b/llvm-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:408d11708643ea826f519ff79761fcdfc12d641a2510229eec459e72f8163020
+size 45471992
--- a/llvm-better-detect-64bit-atomics-support.patch
+++ b/llvm-better-detect-64bit-atomics-support.patch
@ -0,0 +1,22 @@
+Better detect 64bit atomics support.
+
+It appears that on i586 std::atomic<uint64_t>::load is compiled into
+instruction, but std::atomic<double>::load uses __atomic_load_8. This must
+be detected so the build system links it to libatomic.
+Index: llvm-12.0.0.src/cmake/modules/CheckAtomic.cmake
+===================================================================
+--- llvm-12.0.0.src.orig/cmake/modules/CheckAtomic.cmake
+++ llvm-12.0.0.src/cmake/modules/CheckAtomic.cmake
+@@ -30,9 +30,12 @@ function(check_working_cxx_atomics64 var
+ #include <atomic>
+ #include <cstdint>
+ std::atomic<uint64_t> x (0);
+std::atomic<double> y (0);
+ int main() {
+   uint64_t i = x.load(std::memory_order_relaxed);
+  double j = y.load(std::memory_order_relaxed);
+   (void)i;
+  (void)j;
+   return 0;
+ }
+ " ${varname})
--- a/llvm-do-not-install-static-libraries.patch
+++ b/llvm-do-not-install-static-libraries.patch
@ -0,0 +1,134 @@
+This has similar effect as simply deleting the static libraries which we don't
+want after installation. By not copying them in the first place we reduce the
+disk usage during installation.
+
+Index: clang-13.0.0.src/cmake/modules/AddClang.cmake
+===================================================================
+--- a/clang-13.0.0.src/cmake/modules/AddClang.cmake
+++ b/clang-13.0.0.src/cmake/modules/AddClang.cmake
+@@ -106,12 +106,15 @@ macro(add_clang_library name)
+ 
+       if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ARG_INSTALL_WITH_TOOLCHAIN)
+         get_target_export_arg(${name} Clang export_to_clangtargets UMBRELLA clang-libraries)
+-        install(TARGETS ${lib}
+-          COMPONENT ${lib}
+-          ${export_to_clangtargets}
+-          LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+-          ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+-          RUNTIME DESTINATION bin)
+        if (ARG_SHARED OR ARG_MODULE)
+          install(TARGETS ${lib}
+            COMPONENT ${lib}
+            ${export_to_clangtargets}
+            LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+            ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+            RUNTIME DESTINATION bin)
+          set_property(GLOBAL APPEND PROPERTY CLANG_EXPORTS ${lib})
+        endif()
+ 
+         if (NOT LLVM_ENABLE_IDE)
+           add_llvm_install_targets(install-${lib}
+@@ -121,7 +124,6 @@ macro(add_clang_library name)
+ 
+         set_property(GLOBAL APPEND PROPERTY CLANG_LIBS ${lib})
+       endif()
+-      set_property(GLOBAL APPEND PROPERTY CLANG_EXPORTS ${lib})
+     else()
+       # Add empty "phony" target
+       add_custom_target(${lib})
+Index: cmake/modules/AddLLVM.cmake
+===================================================================
+--- a/cmake/modules/AddLLVM.cmake
+++ b/cmake/modules/AddLLVM.cmake
+@@ -730,11 +730,14 @@ macro(add_llvm_library name)
+       endif()
+ 
+       get_target_export_arg(${name} LLVM export_to_llvmexports ${umbrella})
+-      install(TARGETS ${name}
+-              ${export_to_llvmexports}
+-              LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
+-              ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
+-              RUNTIME DESTINATION bin COMPONENT ${name})
+      if(ARG_SHARED OR ARG_MODULE OR NOT LLVM_BUILD_LLVM_DYLIB)
+        install(TARGETS ${name}
+                ${export_to_llvmexports}
+                LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
+                ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
+                RUNTIME DESTINATION bin COMPONENT ${name})
+        set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
+      endif()
+ 
+       if (NOT LLVM_ENABLE_IDE)
+         add_llvm_install_targets(install-${name}
+@@ -742,7 +745,6 @@ macro(add_llvm_library name)
+                                  COMPONENT ${name})
+       endif()
+     endif()
+-    set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
+   endif()
+   if (ARG_MODULE)
+     set_target_properties(${name} PROPERTIES FOLDER "Loadable modules")
+Index: lld-13.0.0.src/cmake/modules/AddLLD.cmake
+===================================================================
+--- a/lld-13.0.0.src/cmake/modules/AddLLD.cmake
+++ b/lld-13.0.0.src/cmake/modules/AddLLD.cmake
+@@ -17,13 +17,6 @@ macro(add_lld_library name)
+ 
+   if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
+     get_target_export_arg(${name} LLD export_to_lldtargets)
+-    install(TARGETS ${name}
+-      COMPONENT ${name}
+-      ${export_to_lldtargets}
+-      LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+-      RUNTIME DESTINATION bin)
+-
+     if (${ARG_SHARED} AND NOT CMAKE_CONFIGURATION_TYPES)
+       add_llvm_install_targets(install-${name}
+         DEPENDS ${name}
+Index: polly-13.0.0.src/cmake/polly_macros.cmake
+===================================================================
+--- a/polly-13.0.0.src/cmake/polly_macros.cmake
+++ b/polly-13.0.0.src/cmake/polly_macros.cmake
+@@ -42,12 +42,14 @@ macro(add_polly_library name)
+     llvm_config(${name} ${LLVM_LINK_COMPONENTS})
+   endif( LLVM_LINK_COMPONENTS )
+   if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LLVMPolly")
+-    install(TARGETS ${name}
+-      EXPORT LLVMExports
+-      LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+    if (MODULE OR SHARED_LIBRARY OR NOT LLVM_BUILD_LLVM_DYLIB)
+      install(TARGETS ${name}
+        EXPORT LLVMExports
+        LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
+        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+      set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
+    endif()
+   endif()
+-  set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
+ endmacro(add_polly_library)
+ 
+ macro(add_polly_loadable_module name)
+Index: polly-13.0.0.src/lib/CMakeLists.txt
+===================================================================
+--- a/polly-13.0.0.src/lib/CMakeLists.txt
+++ b/polly-13.0.0.src/lib/CMakeLists.txt
+@@ -74,7 +74,7 @@ set_target_properties(PollyCore PROPERTI
+ # It depends on all library it needs, such that with
+ # LLVM_POLLY_LINK_INTO_TOOLS=ON, its dependencies like PollyISL are linked as
+ # well.
+-target_link_libraries(Polly PUBLIC
+target_link_libraries(Polly PRIVATE
+   ${ISL_TARGET}
+ )
+ 
+@@ -143,7 +143,7 @@ else ()
+   # hosts. This is not the case for bugpoint. Use LLVM_POLLY_LINK_INTO_TOOLS=ON
+   # instead which will automatically resolve the additional dependencies by
+   # Polly.
+-  target_link_libraries(LLVMPolly PUBLIC ${ISL_TARGET})
+  target_link_libraries(LLVMPolly PRIVATE ${ISL_TARGET})
+   if (GPU_CODEGEN)
+     target_link_libraries(LLVMPolly PUBLIC PollyPPCG)
+   endif ()
--- a/llvm-docs-13.0.0.src.tar.xz
+++ b/llvm-docs-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d7bc1e1fc6eb794b1d3003fd64bdf9d96c754a903b7b7cc4d9de8be9155e278e
+size 4595600
--- a/llvm-exegesis-link-dylib.patch
+++ b/llvm-exegesis-link-dylib.patch
@ -0,0 +1,10 @@
+--- a/llvm/tools/llvm-exegesis/CMakeLists.txt
+++ b/llvm/tools/llvm-exegesis/CMakeLists.txt
+@@ -5,7 +5,6 @@ set(LLVM_LINK_COMPONENTS
+   )
+ 
+ add_llvm_tool(llvm-exegesis
+-  DISABLE_LLVM_LINK_LLVM_DYLIB
+   llvm-exegesis.cpp
+ 
+   DEPENDS
--- a/llvm-fix-find-gcc5-install.patch
+++ b/llvm-fix-find-gcc5-install.patch
@ -0,0 +1,14 @@
+Index: cfe-7.0.0rc1.src/lib/Driver/ToolChains/Gnu.cpp
+===================================================================
+--- cfe-7.0.0rc1.src.orig/lib/Driver/ToolChains/Gnu.cpp
+++ cfe-7.0.0rc1.src/lib/Driver/ToolChains/Gnu.cpp
+@@ -1596,7 +1596,8 @@ Generic_GCC::GCCVersion Generic_GCC::GCC
+       MinorStr = MinorStr.slice(0, EndNumber);
+     }
+   }
+-  if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
+  if (!MinorStr.str().empty() && 
+      (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0))
+     return BadVersion;
+   GoodVersion.MinorStr = MinorStr.str();
+ 
--- a/llvm-normally-versioned-libllvm.patch
+++ b/llvm-normally-versioned-libllvm.patch
@ -0,0 +1,61 @@
+Before llvm4, both major and minor version updates of llvm were regularly
+breaking API. Because of that, the libLLVM library was named in following
+format: libLLVM-${major}-${minor}.so
+
+  (https://bugs.llvm.org/show_bug.cgi?id=25059)
+  (https://reviews.llvm.org/D13841)
+
+The package containing this library was called libLLVM${major}_${minor} which
+follows our guidelines.
+
+Since llvm4, llvm decided to follow semantic versioning and only break API if
+the major version was increased. In addition they do not intend to ever have
+minor version other than 0.
+  (http://blog.llvm.org/2016/12/llvms-new-versioning-scheme.html)
+
+The package was renamed to libLLVM${major}, which no longer follows the naming
+guidelines, but since the package contained multiple libraries, it was not
+detected.
+
+Since bnc#1049703 the libLLVM${major} package contains only the
+libLLVM-${major}-${minor}.so library and no others. This triggers the
+shlib-policy-name-error check in our packaging system.
+
+Because the reasons for using the libLLVM-${major}-${minor}.so format are no
+longer valid, lets revert back to libLLVM.so.${major}.${minor}.${version}
+format. That way the package name matches our guidelines.
+
+Index: llvm-8.0.0rc3.src/tools/llvm-config/llvm-config.cpp
+===================================================================
+--- llvm-8.0.0rc3.src.orig/tools/llvm-config/llvm-config.cpp
+++ llvm-8.0.0rc3.src/tools/llvm-config/llvm-config.cpp
+@@ -380,7 +380,6 @@ int main(int argc, char **argv) {
+   } else {
+     // default to the unix values:
+     SharedExt = "so";
+-    SharedVersionedExt = LLVM_DYLIB_VERSION ".so";
+     StaticExt = "a";
+     StaticDir = SharedDir = ActiveLibDir;
+     StaticPrefix = SharedPrefix = "lib";
+@@ -393,7 +392,7 @@ int main(int argc, char **argv) {
+ 
+   bool DyLibExists = false;
+   const std::string DyLibName =
+-      (SharedPrefix + "LLVM-" + SharedVersionedExt).str();
+      (SharedPrefix + "LLVM." + SharedExt).str();
+ 
+   // If LLVM_LINK_DYLIB is ON, the single shared library will be returned
+   // for "--libs", etc, if they exist. This behaviour can be overridden with
+Index: llvm-8.0.0rc3.src/tools/llvm-shlib/CMakeLists.txt
+===================================================================
+--- llvm-8.0.0rc3.src.orig/tools/llvm-shlib/CMakeLists.txt
+++ llvm-8.0.0rc3.src/tools/llvm-shlib/CMakeLists.txt
+@@ -42,7 +42,7 @@ if(LLVM_BUILD_LLVM_DYLIB)
+   if (LLVM_LINK_LLVM_DYLIB)
+     set(INSTALL_WITH_TOOLCHAIN INSTALL_WITH_TOOLCHAIN)
+   endif()
+-  add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB SONAME ${INSTALL_WITH_TOOLCHAIN} ${SOURCES})
+  add_llvm_library(LLVM SHARED DISABLE_LLVM_LINK_LLVM_DYLIB ${INSTALL_WITH_TOOLCHAIN} ${SOURCES})
+ 
+   list(REMOVE_DUPLICATES LIB_NAMES)
+   if(("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") OR (MINGW) OR (HAIKU)
--- a/llvm-remove-clang-only-flags.patch
+++ b/llvm-remove-clang-only-flags.patch
@ -0,0 +1,21 @@
+Index: llvm-8.0.0rc3.src/cmake/modules/HandleLLVMOptions.cmake
+===================================================================
+--- llvm-8.0.0rc3.src.orig/cmake/modules/HandleLLVMOptions.cmake
+++ llvm-8.0.0rc3.src/cmake/modules/HandleLLVMOptions.cmake
+@@ -413,8 +413,6 @@ if( MSVC )
+ 
+ # Specific default warnings-as-errors for compilers accepting GCC-compatible warning flags:
+ if ( LLVM_COMPILER_IS_GCC_COMPATIBLE OR CMAKE_CXX_COMPILER_ID MATCHES "XL" )
+-  add_flag_if_supported("-Werror=date-time" WERROR_DATE_TIME)
+-  add_flag_if_supported("-Werror=unguarded-availability-new" WERROR_UNGUARDED_AVAILABILITY_NEW)
+ endif( LLVM_COMPILER_IS_GCC_COMPATIBLE OR CMAKE_CXX_COMPILER_ID MATCHES "XL" )
+ 
+ # Modules enablement for GCC-compatible compilers:
+@@ -586,7 +584,6 @@ if (LLVM_ENABLE_WARNINGS AND (LLVM_COMPI
+   endif()
+ 
+   add_flag_if_supported("-Wimplicit-fallthrough" IMPLICIT_FALLTHROUGH_FLAG)
+-  add_flag_if_supported("-Wcovered-switch-default" COVERED_SWITCH_DEFAULT_FLAG)
+   append_if(USE_NO_UNINITIALIZED "-Wno-uninitialized" CMAKE_CXX_FLAGS)
+   append_if(USE_NO_MAYBE_UNINITIALIZED "-Wno-maybe-uninitialized" CMAKE_CXX_FLAGS)
+ 
--- a/9
+++ b/9
@ -0,0 +1,9 @@
+# This line is mandatory to access the configuration functions
+from Config import *
+
+addFilter("devel-file-in-non-devel-package .*/clang/.*/include/.*")
+addFilter("devel-file-in-non-devel-package .*/clang/.*/lib/.*")
+addFilter("devel-file-in-non-devel-package .*/usr/include/.*")
+
+addFilter("devel-file-in-non-devel-package .*/lib.*/*.a")
+addFilter("devel-file-in-non-devel-package .*/lib.*/*.so")
--- a/llvm13.changes
+++ b/llvm13.changes
--- a/llvm13.spec
+++ b/llvm13.spec
--- a/llvm_build_tablegen_component_as_shared_library.patch
+++ b/llvm_build_tablegen_component_as_shared_library.patch
@ -0,0 +1,57 @@
+The LLVMTableGen component is a special case that is excluded from libLLVM and
+normally is only built as static library and linked into llvm-tblgen.
+
+We need to have it as a shared library to be available for other projects such
+as ldc.
+
+This patch makes it even more special and forces it to be build and installed
+as separate shared library.
+
+Index: llvm-8.0.0rc3.src/cmake/modules/AddLLVM.cmake
+===================================================================
+--- llvm-8.0.0rc3.src.orig/cmake/modules/AddLLVM.cmake
+++ llvm-8.0.0rc3.src/cmake/modules/AddLLVM.cmake
+@@ -541,7 +541,7 @@ function(llvm_add_library name)
+   if(ARG_MODULE AND LLVM_EXPORT_SYMBOLS_FOR_PLUGINS AND ARG_PLUGIN_TOOL AND (WIN32 OR CYGWIN))
+     # On DLL platforms symbols are imported from the tool by linking against it.
+     set(llvm_libs ${ARG_PLUGIN_TOOL})
+-  elseif (NOT ARG_COMPONENT_LIB)
+  elseif (NOT ARG_COMPONENT_LIB OR (${name} STREQUAL "LLVMTableGen" AND LLVM_BUILD_LLVM_DYLIB))
+     if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
+       set(llvm_libs LLVM)
+     else()
+Index: llvm-8.0.0rc3.src/cmake/modules/TableGen.cmake
+===================================================================
+--- llvm-8.0.0rc3.src.orig/cmake/modules/TableGen.cmake
+++ llvm-8.0.0rc3.src/cmake/modules/TableGen.cmake
+@@ -115,7 +115,8 @@ macro(add_tablegen target project)
+     set(LLVM_ENABLE_OBJLIB ON)
+   endif()
+ 
+-  add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
+  add_llvm_executable(${target} ${ARGN})
+  target_link_libraries(${target} PRIVATE LLVMTableGen)
+   set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
+ 
+   set(${project}_TABLEGEN "${target}" CACHE
+Index: llvm-8.0.0rc3.src/lib/TableGen/CMakeLists.txt
+===================================================================
+--- llvm-8.0.0rc3.src.orig/lib/TableGen/CMakeLists.txt
+++ llvm-8.0.0rc3.src/lib/TableGen/CMakeLists.txt
+@@ -1,3 +1,7 @@
+if (LLVM_BUILD_LLVM_DYLIB)
+    set(MAYBE_SHARED SHARED)
+endif()
+
+ add_llvm_component_library(LLVMTableGen
+   DetailedRecordsBackend.cpp
+   Error.cpp
+@@ -9,6 +13,8 @@ add_llvm_library(LLVMTableGen
+   TGLexer.cpp
+   TGParser.cpp
+ 
+  ${MAYBE_SHARED}
+
+   ADDITIONAL_HEADER_DIRS
+   ${LLVM_MAIN_INCLUDE_DIR}/llvm/TableGen
+ 
--- a/lto-disable-cache.patch
+++ b/lto-disable-cache.patch
@ -0,0 +1,28 @@
+diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
+index 5e57a3b8234..23f9ed5fb56 100644
+--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
+@@ -889,23 +889,6 @@ if(uppercase_LLVM_ENABLE_LTO STREQUAL "THIN")
+   if(NOT LINKER_IS_LLD_LINK)
+     append("-flto=thin" CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
+   endif()
+-  # If the linker supports it, enable the lto cache. This improves initial build
+-  # time a little since we re-link a lot of the same objects, and significantly
+-  # improves incremental build time.
+-  # FIXME: We should move all this logic into the clang driver.
+-  if(APPLE)
+-    append("-Wl,-cache_path_lto,${PROJECT_BINARY_DIR}/lto.cache"
+-           CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
+-  elseif((UNIX OR MINGW) AND LLVM_USE_LINKER STREQUAL "lld")
+-    append("-Wl,--thinlto-cache-dir=${PROJECT_BINARY_DIR}/lto.cache"
+-           CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
+-  elseif(LLVM_USE_LINKER STREQUAL "gold")
+-    append("-Wl,--plugin-opt,cache-dir=${PROJECT_BINARY_DIR}/lto.cache"
+-           CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
+-  elseif(LINKER_IS_LLD_LINK)
+-    append("/lldltocache:${PROJECT_BINARY_DIR}/lto.cache"
+-           CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
+-  endif()
+ elseif(uppercase_LLVM_ENABLE_LTO STREQUAL "FULL")
+   append("-flto=full" CMAKE_CXX_FLAGS CMAKE_C_FLAGS)
+   if(NOT LINKER_IS_LLD_LINK)
--- a/openmp-13.0.0.src.tar.xz
+++ b/openmp-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4930ae7a1829a53b698255c2c6b6ee977cc364b37450c14ee458793c0d5e493c
+size 1139488
--- a/opt-viewer-Find-style-css-in-usr-share.patch
+++ b/opt-viewer-Find-style-css-in-usr-share.patch
@ -0,0 +1,14 @@
+Index: llvm-7.0.0.src/tools/opt-viewer/opt-viewer.py
+===================================================================
+--- llvm-7.0.0.src.orig/tools/opt-viewer/opt-viewer.py
+++ llvm-7.0.0.src/tools/opt-viewer/opt-viewer.py
+@@ -252,8 +252,7 @@ def generate_report(all_remarks,
+         sorted_remarks = sorted(optrecord.itervalues(all_remarks), key=lambda r: (r.File, r.Line, r.Column, r.PassWithDiffPrefix, r.yaml_tag, r.Function))
+     IndexRenderer(output_dir, should_display_hotness, max_hottest_remarks_on_index).render(sorted_remarks)
+ 
+-    shutil.copy(os.path.join(os.path.dirname(os.path.realpath(__file__)),
+-            "style.css"), output_dir)
+    shutil.copy("/usr/share/opt-viewer/style.css", output_dir)
+ 
+     _render_file_bound = functools.partial(_render_file, source_dir, output_dir, context, no_highlight)
+     if should_print_progress:
--- a/polly-13.0.0.src.tar.xz
+++ b/polly-13.0.0.src.tar.xz
@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd93672c3be35146e199b1e221fb81a39403a0cdeabcad4a47ae878655eea872
+size 9186852
--- a/tests-use-python3.patch
+++ b/tests-use-python3.patch
@ -0,0 +1,30 @@
+Index: llvm-8.0.0rc3.src/test/BugPoint/compile-custom.ll.py
+===================================================================
+--- llvm-8.0.0rc3.src.orig/test/BugPoint/compile-custom.ll.py
+++ llvm-8.0.0rc3.src/test/BugPoint/compile-custom.ll.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
+#!/usr/bin/python3
+ 
+ from __future__ import print_function
+ 
+Index: llvm-8.0.0rc3.src/test/Other/opt-bisect-helper.py
+===================================================================
+--- llvm-8.0.0rc3.src.orig/test/Other/opt-bisect-helper.py
+++ llvm-8.0.0rc3.src/test/Other/opt-bisect-helper.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
+#!/usr/bin/python3
+ 
+ from __future__ import print_function
+ 
+Index: llvm-8.0.0rc3.src/test/TableGen/JSON-check.py
+===================================================================
+--- llvm-8.0.0rc3.src.orig/test/TableGen/JSON-check.py
+++ llvm-8.0.0rc3.src/test/TableGen/JSON-check.py
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
+#!/usr/bin/python3
+ 
+ import sys
+ import subprocess