sometimes free stuff from Zig IR pass 1

free IrAnalyze sometimes

Merge pull request #3808 from LemonBoy/i386-for-ya

Merge branch 'std.fs.File'

Merge pull request #3284 from Sahnvour/export_variables

fix typo in error note for integer casting

docs: this statement was in the wrong section

std.math: remove constants that should be expressions

implement correct buffer wrapping logic in std.event.Channel

Windows: fix test/standalone/shared_library

Implements std.testing.expectEqual for tagged unions. (#3773)

Merge pull request #3769 from MCRusher/initcapacity-for-buffer-arraylist

Merge pull request #3780 from Vexu/stage2-async-review

Merge branch 'kprotty-event_lock'

add compiler note for bad int coercion

Fix build system crash when compiling windows dll

std.elf: breaking improvements to the API

Optimize binary search algorithm

Merge branch 'gereeter-o_path'

Merge pull request #3776 from mikdusan/stage1-intern-housekeeping

std: refactor std/debug.zig DwarfInfo operations to be methods

docs: update references to wasm_allocator

Merge pull request #3774 from mikdusan/stage1-intern-housekeeping

stage1: avoid building empty memory_profiling.cpp

Merge branch 'fengb-wasi-run-tests'

rename std.heap.direct_allocator to std.heap.page_allocator

Merge pull request #3502 from mikdusan/stage1-mem-diet

ci: --no-mime-magic

zig fmt

zig fmt fixes for sentinel-terminated pointers

Merge pull request #3761 from Vexu/event.fs

Merge pull request #3728 from ziglang/null-terminated-pointers

std: update for linux 5.4

Merge pull request #3644 from daurnimator/bytefifo

Call DllMain entry point if declared

Fix FixedSizeFifo buffer type

Merge pull request #3748 from Vexu/modernize-stage2

remove UTF BOM

fix small regressions in std.event

Merge branch 'Vexu-missing-cast'

Stage1: Add compile error for an empty switch on a integer

Merge branch 'std.fs.Dir.openRead'

self-hosted tokenizer handles \r in string literals

remove dead code shebang support from self-hosted tokenizer

std.testing.expectEqual: show differing pointer values

add `std.math.tau` constant (equivalent to 2 * pi)

Make StreamServer return address of accecpted client

translate-c: add support for MacroQualified definitions

add regression test case. closes #2980

add regression test case. closes #2889

add regression test case. closes #3007

add regression test case

Merge pull request #3695 from daurnimator/towards-afd

Merge pull request #3697 from Vexu/container-docs

fix bug on empty error union

Merge pull request #3705 from daurnimator/fix-std.valgrind

Catch invalid type from peer resolution

properly parse anon literal in array

remove no longer correct comment

Update discriminant value also for zero-sized unions

rework layout of struct type fields

rework comptime struct value layout, removing 1/2 hacks

add compile error for @atomicRmw on enum not being an .Xchg

README: update the short description of what zig is

std.io.getStdOut and related fns no longer can error

Merge pull request #3675 from Vexu/atomic-store

fix anonymous struct literal assigned to variable

fn parameters participate in result location semantics

Merge pull request #3447 from Sahnvour/vcpkg

Merge pull request #3670 from Vexu/atomics-enum

fix assertion failure in ptrToInt

fix assertion failure in init_const_undefined

fix unresolved type making it to codegen

Merge pull request #3652 from ziglang/anon-container-lit

stop accepting deprecated `use` keyword

Fix missing @as cast in std.fmt.formatInt (#3650)

std.ChildProcess.spawn has a consistent error set

Merge pull request #3635 from lun-4/unify-unix-sockets

minor fix due to recent directory handling API changes

Fix initialization of union references

missed cast in std/target.zig

Merge pull request #3628 from ziglang/as-builtin

Merge branch 'kprotty-adaptive_lock'

ci: add srht oauth token to drone cloud script

ci: bump ubuntu from 16.04 to 18.04

allow Group to optionally manage function frames' memory

make callMainAsync async

correctly use llvm undef in release modes

Merge branch 'LemonBoy-fix-more-things'

Merge pull request #3618 from nrdmn/uefi

allow type coercion from *[0]T to E![]const T

Add error when too few arguments are provided to std.fmt

std.json.Value: added dumpStream(), utilize WriteStream for dump()

fix NodeErrorSetDecl rendering

use global event loop in std.event types

improve the start code for evented I/O

add token for parsing pointer dereference

Fixed a leak in the json parser.

fix translate-c arrow deref

zig build: addIncludeDir does -I instead of -isystem