astgen.zig: avoid temporary allocations by sharing the `instructions` ArrayList between a GenZir and its sub-blocks wherever their use of it is strictly nested

astgen.zig: delay adding closure_capture instructions to preserve GenZir nesting. Only containers create Namespaces, so the declaring_gz is always the GenZir passed to containerDecl, and containerDecl will always add exactly one instruction (an extended *_decl) to that GenZir. Thus, closure_capture instructions are always lined up immediately after a container decl instruction, so rather than adding them at the point of first mention, where we're nested arbitrarily deep, simply walk through the Namespace captures hash map at the end of each containerDecl branch and add them then.

astgen.zig: use scratch buffer for temporary allocations in switchExpr and WipMembers

astgen.zig: simplify container functions by pulling out common processing of members

astgen.zig: replace WipDecls with WipMembers, use one allocation to collect container decls, fields, and bits, instead of up to four

astgen.zig: simplify switchExpr and collect payload in one ArrayList instead of three

astgen.zig: avoid unnecessary allocation in identifier for @"" syntax

astgen.zig: avoid temporary allocations in arrayInit* and structInit*, callExpr, errorSetDecl, typeOf, and builtinCall's compile_log branch

optimize AstGen.callExpr

Merge pull request #10068 from leecannon/tracy_improvements

stage2: move x86_64 codegen to arch/x86_64/CodeGen.zig

Merge pull request #10066 from joachimschmidt557/stage2-aarch64-mir

C backend: implement signed trunc

std: add missing termios def to std/c/linux.zig

stage2: implement `@popCount` for non-vectors

gpa: fix memory limit accounting for large allocations

Add argument for `fillFn` to `Random.init`

CLI: clarify help text for -z

zig: expose linker options and include '-z notext'

Make `std.meta.trait.isContainer` true for opaques

Use `debug.assert` instead of `testing.expect`.

Make pointer variables in ( init-lib | init-exe )/build.zig const. (#10057)

C backend: implement trunc for unsigned non-pow2 ints

C backend: implement trunc instruction

C backend: fix `@boolToInt`

C backend: fix crash when number of Decls passes a threshold

C backend: fix ptrtoint and wrap_errunion_err

behavior tests: add "passing for C backend" category

C backend: fix enough that zig test works

C backend: emit decls sorted by dependencies

std.ArrayListUnmanaged: implement writer()

zig test: when -ofmt=c, default to `zig run` as test exec

Compilation: fix crash in the compile error system

stage2: fix small memory leak of test_functions when using `zig test`

std.rand: Refactor `Random` interface

Merge pull request #10040 from mattbork/extern-fn-scopes

stage1: Fix path normalization on Windows

stage2: implement runtime pointer access to global constants

stage2: fix crash report code in release builds

stage2 LLVM backend: fix bitcast

Fix bug in exp2() (#9999)

multi_array_list: get function take self by value

Sema: fix ret_ptr when inlining

Sema: improved C pointers and casting

Sema: fix coercion from union to its own tag

astgen: generate correct switch prong indices

Don't call render_const_val_array() on undefined

Merge pull request #10035 from Snektron/stage2-orelse

Merge pull request #10034 from Snektron/stage2-slice

Merge pull request #9874 from leecannon/frame_pointer

Sema: fix switch that covers full integer range

stage2: fix switch on tagged union capture-by-pointer

fix(uefi MemoryDescriptor): padding after memory type

Sema: implement coercion from pointers to `*c_void`

AstGen: move nodeMayEvalToError logic for builtins

Merge pull request #10019 from mattbork/ret-fixes

Fix documentation for Random.int

Revert 83bdbb2 and a587dd0 (#10028)

std: disable big.rational setFloat targeting wasm32

stage2: refactor coercePeerTypes and fix C ptr cmp with null

std.log: simplify to 4 distinct log levels

macho: remove unresolved ref in the correct place

Merge pull request #10022 from LemonBoy/fix-10001

Merge pull request #10017 from Snektron/big-int-div

std: Fix edge case in TLS tp calculation

stage2: implement more C pointer Sema and comptime ptr arith

Minor rewording of "Shadowing" section within language reference

stage2: LLVM backend: fix optional_payload instructions

stage2: implement aligned variables and `@alignCast`

stage2: slice and alignment fixes

Sema: fix a couple use-after-free bugs

stage2: fix Decl addrspace being undefined

stage2: change `@bitCast` to always be by-value

zig libc: export floorl and ceill

macho: dump linker's state as JSON

Sema: resoveTypeLayout resolves optionals and error unions too

stage2: LLVM backend: add a missing setUnnamedAddr

Sema: fix type checking of `@intToFloat` operands

stage2: implement comptime loads through casted pointers

stage2: fix Value.copy not copying arrays

stage2: more division support

stage2: truncation

Merge pull request #9993 from Snektron/more-field-elem

InstallRawStep: handle empty segments

distinguish between unexpected child process exit code and unclean exit

stage2: implement slicing

Sema: fix missing copy in array multiplication

stage2: LLVM backend: fix decls sometimes not marked alive

stage2: implement big int to float conversion

AstGen: make the index variable of `inline for` a `alloc_comptime`

stage2: fix inline assembly with expression output

translate-c: create `inline fn` for always_inline

stage2: LLVM backend: implement switch_br

stage2: implement switching on unions

Merge pull request #9984 from Snektron/field-elem-access

macho: fix LLVM codepaths in self-hosted linker

translate_c: prevent a while under an if from stealing the else

astgen.zig: fix emitting wrong error unwrapping instructions in tryExpr

src/link/C/zig.h: Fix indent

stage2: fix coercion of error set to error union