Nonzeroing Move Hints (take3 branch)#26173

Merged

bors merged 11 commits intorust-lang:masterfrom

pnkfelix:fsk-trans-nzmove-take3

Jul 28, 2015

Commits on Jul 28, 2015

Prep for dropflag-hints: Clarify trans bindings MoveByRef and MoveIntoCopy.
pnkfelix
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Prep for dropflag hints: refactor `trans:_match` to pass around `MatchInput` rather than `ValueRef`.
pnkfelix
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debugflag to turn off nonzeroing move hint optimization.
pnkfelix
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Extend `trans::datum::Lvalue` so that it carrys an optional dropflag hint.
pnkfelix
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rustc and rustc::borrowck: pass fragment info down into trans.
pnkfelix
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Add dropflag hints (stack-local booleans) for unfragmented paths in trans.
pnkfelix
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During my own review, I convinced myself this was indeed a bug.
pnkfelix
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Revise intrinsic-move-val test to not require knowledge of whether filling drop is in use.
pnkfelix
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Reduced the Lvalue constructors to a kernel of three constructors.
pnkfelix
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build fragmented map earlier to make its dependencies clearer.
pnkfelix
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comments and code-cleanup in response to reviews.
pnkfelix
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