Sema: port reify struct access to use InternPool

Sema: add coerceTupleToStruct result to the InternPool

InternPool: add repeated aggregate storage

compiler: move error union types and error set types to InternPool

compiler: eliminate legacy Type.Tag.pointer

compiler: eliminate legacy Type.Tag.optional

compiler: move `anyframe->T` to InternPool

stage2: move function types to InternPool

stage2: encode one-possible-value tuple specially

stage2: move anon tuples and anon structs to InternPool

stage2: move enum tag values into the InternPool

stage2: remove legacy Type array and array_sentinel

InternPool: transition float values

stage2: move enum types into the InternPool

InternPool: fix deinit leaking inner maps

InternPool: ability to encode enums

add std.hash.uint32

stage2: move union types and values to InternPool

stage2: move struct types and aggregate values to InternPool

stage2: move opaque types to InternPool

InternPool: add optional values

InternPool: add ptr-to-int value

InternPool: add indexToKey for empty struct types

Sema: introduce Value.enum_field_0

stage2: more InternPool related fixes

stage2: move empty struct type and value to InternPool

InternPool: add an int_u8 value encoding

stage2: more InternPool-related fixes

stage2: implement intTagType logic

stage2: bug fixes related to Type/Value/InternPool

InternPool: fix UAF in getCoercedInt and add u16 int value encoding

Replace uses of Value.zero, Value.one, Value.negative_one

InternPool: add getCoercedInt to avoid copy in Sema

wip: progress towards compiling tests

InternPool: implement indexToKey and equality for int values

InternPool: add an encoding for arrays with sentinels

stage2: move integer values to InternPool

Sema: update onePossibleValue for InternPool

LLVM backend: update integer constant lowering for InternPool

stage2: fix interned integer value printing

InternPool: fix bug in addLimbsExtraAssumeCapacity

Sema: add typeHasOnePossibleValue logic for InternPool

InternPool: add a slice encoding

stage2: add missing comptimeOnly logic for InternPool

fix AIR printing of interned constants

stage2: add tmp_hack_arena for the InternPool transition

fill out more InternPool Type methods

InternPool: add a dump function

stage2: migrate many pointer types to the InternPool

std.builtin.AddressSpace: allocate one more bit to this enum

Sema: update core comptime detection logic to be InternPool aware

InternPool: enhance integer values

std.mem.alignForwardGeneric: manually inline the assertions

stage2: add a few more Value checks for InternPool

stage2: move undef, unreach, null values to InternPool

InternPool: add the missing pointer data

stage2: move many Type encodings to InternPool

stage2: move all integer types to InternPool

Type.isSlice: make it InternPool aware

Type: update to use InternPool for some methods

stage2: move most simple values to InternPool

stage2: move most simple types to InternPool

stage2: move named int types to InternPool

stage2: move float types to InternPool

InternPool: implement isSinglePointer

InternPool: implement typePtrOrOptionalPtrTy

InternPool: implement resolveTypeFields

InternPool: implement hasWellDefinedLayout for simple_type

InternPool: implement hasRuntimeBitsAdvanced for simple_type

InternPool: implement typeHasOnePossibleValue for simple_type

stage2: isGenericPoison InternPool awareness

stage2: add `interned` AIR tag

InternPool: flesh out some of the implementations

std.builtin: give some enums integer types

stage2: start the InternPool transition

Sema: resolve peer vector types before comparison

os/plan9: fix order of register setting in syscall1

Sema: emit error on @intToPtr with slice dest type

AstGen: handle ref_table for params

Merge pull request #15980 from squeek502/walker-fixes

std.hash_map: fetchRemove increment available

Merge pull request #15950 from der-teufel-programming/autodoc-quickfixes

reimplement wyhash v4.1 (#15969)

std: fix parseInt for single-digit signed minInt (#15966)

llvm: stop generating FPU code if there is no FPU

crypto.bcrypt: allow very large passwords to be pre-hashed (#15955)

macos+libc: add zlib.h,sys/paths.h,netinet/{ip.h,udp.h}

Merge pull request #15579 from squeek502/mem-delimiters

std.c: fix return type of recv/recvfrom on windows

Build: fix producesPdbFile logic (#15756)

fix missing insertion of module to all_modules on first download

std.io.reader.Reader: add `streamUntilDelimiter`

AstGen: handle ref_table for errdefer captures

Merge pull request #15927 from truemedian/http-bugs

Merge pull request #15900 from Snektron/spirv-pool

Fix std.hash benchmarks (#15917)

Merge pull request #15919 from Luukdegram/wasm-behavior-tests

Use the word 'base' consistently instead of 'radix'

add missing note "operation is runtime due to this operand"

don't crash when can't evaluate comptime expression with inferred type