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I suspect we could profitably remove/move some of the bullet points
under Clang here to the Clang notes in order to keep things clean on
both sides. Unless I hear objections I'll start doing that once folks
have read over the Clang notes a bit.

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 - This fixes some layering violations and matches how we handle the llvm-c lib,
   for example.

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to the way we currently expect target selection to work -- clients are supposed
to have control over what targets are available.

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dependency information.

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rdar://10493453

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Make SelectionDAG::InferPtrAlignment use llvm::ComputeMaskedBits instead of duplicating the logic for globals.  Make llvm::ComputeMaskedBits handle GlobalVariables slightly more aggressively, to match what InferPtrAlignment knew how to do.



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Conservatively returns zero when the GV does not specify an alignment nor is it
initialized. Previously it returns ABI alignment for type of the GV. However, if
the type is a "packed" type, then the under-specified alignments is attached to
the load / store instructions. In that case, the alignment of the type cannot be
trusted.
rdar://10464621


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than ABI alignment. These are loads / stores from / to "packed" data structures.
Their alignments are intentionally under-specified.

rdar://10301431


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SCEV should now be used for trip count analysis, not LoopInfo.


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Add back a line I deleted by accident in r145141.  Fixes uninitialized variable warnings and runtime failures.



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uninitialized: GCC doesn't understand that the variables are only used
if !UseImm, in which case they have been initialized.


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Add X86 instruction selection for VPERM2I128 when AVX2 is enabled. Merge VPERMILPS/VPERMILPD detection since they are pretty similar.

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Some files installed by clang are not relevant for general users and we'd like
to be able to install them to a different location.  This adds a new
--with-internal-prefix configure option and a corresponding PROJ_internal_prefix
makefile variable, which defaults to the standard prefix.  A tool makefile
can specify that it should be installed to this internal prefix by defining
INTERNAL_TOOL.

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llc knows whether he is compiled with -DNDEBUG.
|  Optimized build with assertions.

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lit/TestRunner.py: [Win32] Introduce WinWaitReleased(f), to wait for file handles to be released by children.

When wait() has finished, opened handles (especially writing stdout to file) might not be released immediately.
To wait for released, poll to attempt renaming.

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config.h.cmake: Synchronize to config.h.in.

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The config.h file's macros collide with other projects that include
LLVM and shouldn't get exported.

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Now that it needs to be exported in a public header (Valgrind.h)
it should be prefixed to avoid collision with other projects.
Add it to llvm-config.h as well.

This'll require regenerating the configure script after this
commit, but I don't have the required autoconf version.

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