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Enum layout optimizations#19536

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luqmana wants to merge 11 commits intorust-lang:masterrust-lang/rust:masterfrom luqmana:nonzero-lang-itemluqmana/rust:nonzero-lang-itemCopy head branch name to clipboard

+296-145

Commits

Commits on Dec 8, 2014

• librustc: Traverse arbitrarily deep for nullable enum opt.

  luqmana

  committed
  3d7a446

• librustc: Try looking in tuple fields for nullable enum opt.

  luqmana

  committed
  054a256

• librustc: Try looking in fixed sized arrays for nullable enum opt.

  luqmana

  committed
  39be76e

• Add tests.

  luqmana

  committed
  eaeb425

• librustc: Add NonZero lang item and use it if possible for nullable pointer enum opt.

  luqmana

  committed
  5fb8576

• libcore: Add NonZero lang item and implement some methods.

  luqmana

  committed
  458475b

• libcollections: Use NonZero in Vec.

  luqmana

  committed
  652b793

• liballoc: Use NonZero in Rc.

  luqmana

  committed
  98fdf0f

• liballoc: Use NonZero in Arc.

  luqmana

  committed
  61a737a

• libcore: Make it unsafe to create NonZero and impl Deref.

  luqmana

  committed
  e6a3c6e

• Add tests for NonZero.

  luqmana

  committed
  27d539f