This fixes PR5130.

llvm-svn: 83290

Do away with the strange use of BitVectors in SSI, and just use normal sets.  This makes the code much more C++/LLVM-ish.

llvm-svn: 83286

llvm-svn: 83283

Similarly, it can be marked setPreservesAll, since it does no work in its runOnFunction.

llvm-svn: 83282

llvm-svn: 83274

llvm-svn: 83194

Ok'd by Owen.

llvm-svn: 83193

while calling changeImmediateDominator, which removes elements from the
vector. This fixes PR5097.

llvm-svn: 83166

llvm-svn: 82991

llvm-svn: 82990

phi nodes.  Make sure to phi translate from the right block. 

This fixes a llvm-building-llvm failure on GVN-PRE.cpp

llvm-svn: 82970

llvm-svn: 82936

The bitcast case is not needed here: instcombine turns icmp(bitcast(x), null) -> icmp(x, null) already.  

llvm-svn: 82935

llvm-svn: 82933

malloc isn't needed.

llvm-svn: 82932

llvm-svn: 82931

llvm-svn: 82929

when the loop inspects the bitcast operand.

llvm-svn: 82928

llvm-svn: 82927

These are important to push up to encourage jump threading.  This shrinks 176.gcc a bit.

llvm-svn: 82923

simple constants for the true/false value of the select.  We now
do phi translation etc.  This really fixes PR4895 :)

llvm-svn: 82917

that are phi nodes.  Also tighten up FoldOpIntoPhi to treat constantexpr
operands to phis just like other variables, avoiding moving constantexpr
computations around.

Patch by Daniel Dunbar.

llvm-svn: 82913

that is deleted in some situations. This fixes a use-after-free.

llvm-svn: 82903

rotating the loop, since loop rotation is a very significant change.

llvm-svn: 82901

update all the callers.

llvm-svn: 82889

calls, since direct calls don't always reflect the attributes of their
callees.

llvm-svn: 82867

llvm-svn: 82823

typically faster then doing a general pow.

llvm-svn: 82819

llvm-svn: 82700

rather structs passed by value.
This fixes PR5038.

llvm-svn: 82689

computation, and some cosmetics.

llvm-svn: 82660

llvm-svn: 82488

bootstrap problems.

llvm-svn: 82464

by setPreservesCFG().

llvm-svn: 82463

helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.

llvm-svn: 82462

arrays and structs, which cannot be bitcast to integers.

llvm-svn: 82460

This doesn't kick in too much because of phi translation issues,
but this can be resolved in the future.

llvm-svn: 82447

llvm-svn: 82446

llvm-svn: 82444

analysis, one that does the xform.

llvm-svn: 82443