Merge remote-tracking branch 'origin/master' into copy-elision-3

add missing error code for DeleteFileW

all tests passing on linux

disable building self hosted compiler in test suite

fix peer type resolution: unreachable, error set, unreachable

fix peer type resolution with null

all compile error tests passing

fix several compile error test regressions

fix infinite loop when error in peer resolution

fix implicit cast vector to array

fix union init with void payload

align (vector -> array) store to result location

compile error tests only for debug mode

Merge remote-tracking branch 'origin/master' into copy-elision-3

uncomment passing std lib tests

fix some legacy coroutine stuff

fix another crash

fix std.json regression

elide redundant safety check when switching on tagged unions

fix implicit cast fn call result to optional in field result

Merge remote-tracking branch 'origin/master' into copy-elision-3

fix ArenaAllocator

uncomment passing std lib tests

fix return result loc and then switch with range...

fix implicit cast to optional to error union to return result loc

fix implicit cast bitcast result to error union by returning

fix extern functions returning byval structs

fix nested orelse and nested catch

blocks have result location semantics

fix regression with zero sized array

BRANCH_TODO file moved to the pull request comments

fix loops with multiple break statements

fix coroutines

one more test passing

fix peer result loc fn call with comptime condition

fix labeled break inside comptime if inside runtime if

fix double getelementptr of runtime global

Merge remote-tracking branch 'origin/master' into copy-elision-3

fix optional pointer to size zero struct

fix `try` not setting error code on result location

fix comptime test error for empty error set

fix extraneous nested union field instruction

fix detection of unable to evaluate constant expression

fix comptime modification of const struct field

fix inline loop behavior with variable result loc

back to many behavioral tests passing

fix problem with inferred error set return result

fix bitcast

more miscellaneous fixes

fix zero length array literal casted to slice

misc fixes

inferred comptime array inits

fix function calls

inferred comptime union inits

inferred comptime values rather than elided scopes

better result location handling of inline loops

better result location semantics with optionals and return locations

Merge remote-tracking branch 'origin/master' into copy-elision-3

uncomment more passing tests

fix peer result locs with switch

fix peer result location with error code and payload

fix a couple more test regressions

fix bitcast packed struct to integer and back

fix atomic builtin functions

allow comptime array literals casted to slices

fix behavior for nested array literals

fix runtime initialize array elem and then implicit cast to slice

comment out the behavior tests that are failing

fix result loc implicit casting optionals and error unions

fix double nested peer result locations

fix declref not writing to result loc

fix nested peer result locs with no memory loc

fix `@bitCast` with runtime scalar and dest result loc var

fix alignment problem with `@bitCast` result location

fix `@bitCast` regressions

fix runtime if nested inside comptime if

fix returning scalar values

fix `@bitCast` semantics when there is no parent result loc

temporarily simplify test_runner.zig

fix for loop index variable not in scope

fix not checking return value of resolving result

fix struct and array init when result casted to anyerror!?T

fix struct and array init when result casted to anyerror!?T

fix implicit casting return value struct/arary init to optional

fixes for crashes and compile errors

fix comptime variables

fix comptime function calls

Merge remote-tracking branch 'origin/master' into copy-elision-3

remove the final legacy stack allocation

use result loc for ref instruction

fix peer result locations in the face of unreachable

result location semantics for vector to array

result loc semantics for loading packed struct pointer to packed struct

result loc semantics for `@sliceToBytes` and `@bytesToSlice`

result location semantics for cmpxchg

result location semantics for error union wrapping an error

result location semantics for error union wrapping a payload

result location semantics for optional wrap

result location semantics for slices

result location semantics for `@bitCast`