sizes.zig:25:5: error:
                       ========================
                       Type: u63
                         @sizeOf: 8
                         @bitSizeOf: 63
                         @alignOf: 8
                       ========================
                       Type: u64
                         @sizeOf: 8
                         @bitSizeOf: 64
                         @alignOf: 8
                       ========================
                       Type: ?u63
                         @sizeOf: 16
                         @bitSizeOf: 128
                         @alignOf: 8
                       ========================
                       Type: ?u64
                         @sizeOf: 16
                         @bitSizeOf: 128
                         @alignOf: 8

    @compileError(buffer);
    ^~~~~~~~~~~~~~~~~~~~~

========================
Type: u63
  @sizeOf: 8
  @bitSizeOf: 63
  @alignOf: 8
========================
Type: u64
  @sizeOf: 8
  @bitSizeOf: 64
  @alignOf: 8
========================
Type: ?u63
  @sizeOf: 16
  @bitSizeOf: 128
  @alignOf: 8
========================
Type: ?u64
  @sizeOf: 16
  @bitSizeOf: 128
  @alignOf: 8

========================
Type: u63
  @sizeOf: 8
  @bitSizeOf: 63
  @alignOf: 4
========================
Type: u64
  @sizeOf: 8
  @bitSizeOf: 64
  @alignOf: 4
========================
Type: ?u63
  @sizeOf: 12
  @bitSizeOf: 96
  @alignOf: 4
========================
Type: ?u64
  @sizeOf: 12
  @bitSizeOf: 96
  @alignOf: 4

These folks are next in line for ZSF contracts once funds are available.

1. Andrew Kelley (andrewrk)
2. Loris Cro (kristoff)
3. Isaac Freund (ifreund)
4. Veikka Tuominen (Vexu)
5. Michael Dusan (mikdusan)
6. Jacob Young (jacobly)
7. Matthew Lugg (mlugg)
8. Alex Rønne Petersen (alexrp)
9. Mason Remaley (MasonRemaley)
10. Ryan Liptak (squeek502)
11. Frank Denis (jedisct1)
12. Ali Cheraghi (alichraghi)
13. Justus Klausecker (justusk)
14. Casey Banner (kcbanner)
15. Pavel Verigo (pavelverigo)

Rust's LLVM IR codegen emits LLVM's llvm.lifetime.start and llvm.lifetime.end intrinsics for stack variables when they are no longer in use, which lets LLVM reuse stack space slots. This lets large functions with nested scopes use significantly less stack space.

Previously, we manually worked around an open issue by refactoring particularly large functions into many smaller functions.