Most tests were using %swift or similar substitutions, which did not
include the target triple and SDK. The driver was defaulting to the
host OS. Thus, we could not run the tests when the standard library was
not built for OS X.
Swift SVN r24504
patterns show up in their own scopes, and the same variable name can be
reused in consecutive patterns.
<rdar://problem/15187441> Implement local variable debug scoping for variables declared in patterns
Swift SVN r23251
This is needed for tests which define internal functions which should not be eliminated.
So far this was not needed because of a hack which prevented whole-module-optimizations for tests.
Swift SVN r22658
Specialization now recurses on only that prefix of the
current matrix which shares a specialization form
(essentially, a pattern kind) with the head row. This is
inferior to the previous algorithm in a number of ways: we
may require more switches to perform a single dispatch, and
we may introduce more redundant variables in the leaves.
However, it also means that we will have fully specialized a
row along exactly one path in the decision tree, which makes
it much easier to work with dispatches that introduce new
cleanups.
This change also changes switch-dispatch to use the new
dynamic-cast instructions.
Incidentally fixes rdar://16401831.
Swift SVN r19336
