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

llvm-svn: 82904

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

llvm-svn: 82903

llvm-svn: 82902

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

llvm-svn: 82892

allows matching and remembering a string and then matching and
verifying that the string occurs later in the file.

Change X86/xor.ll to use this in some cases where the test was
checking for an arbitrary register allocation decision.

llvm-svn: 82891

LangRef entry too.

llvm-svn: 82890

update all the callers.

llvm-svn: 82889

llvm-svn: 82888

not the other in the future.

llvm-svn: 82887

autoconf/AutoRegen.sh.

llvm-svn: 82886

to explain that derived types are all composed of other types, which primitive
types aren't. Without moving integer out of derived, this wouldn't be true.

Perform a few trivial cleanups; 'i1' went from a link to #t_primitive to
#t_integer (a holdover from when it was a bool type I suppose).

llvm-svn: 82884

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

llvm-svn: 82877

too.

llvm-svn: 82873

llvm-svn: 82869

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

for addition.

llvm-svn: 82860

llvm-svn: 82859

be removed, but I XFAIL'd it for now.

llvm-svn: 82847

llvm-svn: 82838

llvm-svn: 82837

llvm-svn: 82836

llvm-svn: 82835

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

llvm-svn: 82834

llvm-svn: 82829

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