llvm-svn: 82931

llvm-svn: 82930

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

llvm-svn: 82909

llvm-svn: 82908

aren't in canonical loop-simplify form, since it doesn't itself depend
on LoopSimplify. This means handling loops without preheaders and loops
with multiple backedges.

llvm-svn: 82905

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

llvm-svn: 82900

test whether it properly dominates the loop header. This is equivalent
when the loop has a preheader, and has the advantage of working when
the loop doesn't have a preheader. Since IVUsers doesn't Require
LoopSimplify, the loop isn't guaranteed to have a preheader.

llvm-svn: 82899

llvm-svn: 82898

llvm-svn: 82897

in RegisterStatistic.

llvm-svn: 82896

llvm-svn: 82893

LangRef entry too.

llvm-svn: 82890

update all the callers.

llvm-svn: 82889

and makes the API more annoying.  Add a Regex::getNumMatches() method.

llvm-svn: 82877

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

llvm-svn: 82867

to inttoptr/ptrtoint unnecessarily.

llvm-svn: 82864

there need to be corresponding changes to the constant folders,
done in this patch.

llvm-svn: 82862

where FCMP_OEQ is not legal and FCMP_OGE is, such as x86. 

llvm-svn: 82861

llvm-svn: 82838

llvm-svn: 82837

llvm-svn: 82836

allocatable. Even if it doesn't appear to have any defs, it may latter
on after register allocation.

llvm-svn: 82834

llvm-svn: 82825

llvm-svn: 82823

MathExtras.h in MachineMemOperand.h.

llvm-svn: 82822

llvm-svn: 82821

typically faster then doing a general pow.

llvm-svn: 82819

llvm-svn: 82818

which have no defs anywhere in the function. In particular, this fixes sinking
of instructions that reference RIP on x86-64, which is currently being modeled
as a register.

llvm-svn: 82815

llvm-svn: 82814

llvm-svn: 82812

and skipping the defs.

llvm-svn: 82811