disable failing stack traces test cases due to LLVM12 changes

disable failing MIPS tests due to LLVM12 regressions

Revert back to the old LLVM PassManager

zig_llvm.cpp: remove dead code

Merge remote-tracking branch 'origin/master' into llvm12

llvm new-pm: Add missing pipeline option and Passes

llvm new-pm: Port LLVM 11.x-based changes to LLVM 12.x

Merge remote-tracking branch 'origin/master' into llvm12

std: Detect AMD Zen3 CPU family

Merge remote-tracking branch 'origin/master' into llvm12

Merge remote-tracking branch 'origin/master' into llvm12

re-enable behavior/vector test for aarch64

Merge remote-tracking branch 'origin/master' into llvm12

disable failing behavior tests with llvm 12

disable failing behavior tests with llvm 12

Revert "update i386 assembly to satisify llvm12"

stage2: use std.zig.fmtId for builtin.zig source

update to latest std Thread API

x86: detect and set 16bit_mode and 32bit_mode CPU features

cmake: update findllvm.cmake file to include llvm12 libraries

Merge remote-tracking branch 'origin/master' into llvm12

zig c++: fix compilation that includes any c++ std library file

tools/update_cpu_features: fix usage()

stage1: update to LLVM 12 sret callsite requirements

update i386 assembly to satisify llvm12

glibc: clang 12 assembler regression workaround

update ARM target CPU features

tools/update_cpu_features: add a "flatten" feature

tools/update_cpu_features: better patching API

std.zig.fmtEscapes: update impacted test

std.Target.Abi: add gnuilp32

std.Target: add powerpcle

Merge remote-tracking branch 'origin/master' into llvm12

tools/update_cpu_features: consistent naming of neoverse cpus

update amdgpu target CPU features

update RISC-V target CPU features

update most target CPU features to llvm12

update x86 CPU features

tools/update_cpu_features: prune redundant features

tools/update_cpu_features: handle ISAs with no features

tools/update_cpu_features: branch quota where necessary

introduce tools/update_cpu_features.zig

zig cc: update clang command line options to LLVM 12 rc2

llvm12: sync with llvmorg-12.0.0-rc2

stage1: Fix emission of sret annotation for LLVM

Revert "stage1: upgrade to new LLVM sret attribute requirement"

stage1: upgrade to new LLVM sret attribute requirement

translate-c: fix botched merge conflict

Merge remote-tracking branch 'origin/master' into llvm12

fix to compile against 12.0.0-rc2

stage1: Let LLVM legalize the overflowing ops on vectors

update the CPU target features and models

stage1: apply LLVM ssp attributes globally

update clang.zig and translate-c for the clang C++ API changes

Merge remote-tracking branch 'origin/master' into llvm12

Update clang options

Update changes due to different CPU feature sets

Update zig_llvm.cpp and other bits

Update target details

Update libcxxabi

Update libcxx

Update libunwind

Update clang headers

Update clang drivers

Update LLVM version numbers in CMake

Merge pull request #7431 from LemonBoy/fix-7426

mingw-w64: add .def files for xaudio2_8

create SendToError (#7417)

stage2: Add -include libc-symbols.h when building crtn.S

openbsd: crt0.o file is different when build static or dynamic mode

openbsd: correct few structs

openbsd: link with required system libraries (#7380)

stage1: Don't skip steps when analyzing union types

Add missed Linux syscalls

Merge pull request #7411 from LemonBoy/sigaction-smoke

std: Fix formatting of type values

stage2: use %type not @type for libc stubs

bump version to 0.7.0 => 0.7.1

Merge pull request #7406 from ifreund/dyn-musl2

glibc: do not provide -lcrypt

std.fs.path.extension: different behavior for ending dot

stage2: proper file extension stripping

std.fs.path.extension: add additional API guarantee

Merge pull request #7098 from MasterQ32/std.fs.path.extension

fix deadlock with build-exe on an object for windows

mingw-w64: add .def files for xinput1_4

mingw-w64: add support for -lwldap32

zig fmt: Fix alignment of initializer elements

stage2: detect redundant C/C++ source files

update contributing docs

CLI: improved local cache directory logic

Added global-cache argument to build system + removed extra args.

Merge pull request #7372 from LemonBoy/atomicint

Support casting enums to all int types.

Merge pull request #7369 from jorangreef/io_uring_timeout

make std.json.unescapeString pub

translate-c: support referencing c containers in macros

Merge pull request #7368 from kubkon/macho-trie-cleanup

Merge pull request #7375 from mikdusan/qemu

CLI: infer --name based on first C source file or object