now-probably-dead instruction tree feeding it.

llvm-svn: 83778

llvm-svn: 83777

- llvm's libs must be linked after clang's
- libLLVMSystem depends on psapi on win32 (get_system_libs has it)
- CIndex builds successfully on mingw now

llvm-svn: 83773

llvm-svn: 83772

eliminate some instances of serial comma. sabre, if you feel strong about this, feel free to revert this rev

llvm-svn: 83771

llvm-svn: 83770

llvm-svn: 83769

llvm-svn: 83768

llvm-svn: 83767

llvm-svn: 83766

llvm-svn: 83765

Along the way, use RequireCompleteType when testing exception spec types.
Separate all the ugly spec stuff into its own file.

llvm-svn: 83764

default binding for regions. This allows us to simply a lot of code. A
further simplification could be done is that many methods of
regionstore can only work on Store instead of GRState. 

llvm-svn: 83762

gets but clang doesn't, because it is implemented in GCC's
fold routine.

llvm-svn: 83761

llvm-svn: 83760

done by condprop, but do it in a much more general form.  The
basic idea is that we can do a limited form of tail duplication
in the case when we have a branch on a phi.  Moving the branch
up in to the predecessor block makes instruction selection
much easier and encourages chained jump threadings.

llvm-svn: 83759

llvm-svn: 83758

llvm-svn: 83757

llvm-svn: 83756

llvm-svn: 83755

llvm-svn: 83754

llvm-svn: 83753

ConstantInt::TheTrueVal/TheFalseVal members.

llvm-svn: 83752

llvm-svn: 83751

llvm-svn: 83750

llvm-svn: 83749

the IR, and to implement the FIXME'd optimization.

llvm-svn: 83748

inserted only once, just use vector.  Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.

llvm-svn: 83747

from GVN, this also speeds it up, inserts fewer PHI nodes (see the
testcase) and allows it to remove more loads (due to fewer PHI nodes
standing in the way).

llvm-svn: 83746

llvm-svn: 83745

PHI nodes inserted.

llvm-svn: 83744

llvm-svn: 83743

llvm-svn: 83742

not just at the end.  Add a big comment explaining when this could
be useful (which never happens for jump threading).

llvm-svn: 83741

what it does.

llvm-svn: 83740

Remove impdef of SRW. This fixes PR4779

llvm-svn: 83739

llvm-svn: 83738

llvm-svn: 83737

llvm-svn: 83736

llvm-svn: 83735