code that stops the timer doesn't have to search to find the timer
object before it stops the timer. This avoids a lock acquisition
and a few other things done with the timer running.

llvm-svn: 82949

This should be better than single load from constpool.

llvm-svn: 82948

llvm-svn: 82947

a separate function.

llvm-svn: 82946

LoopPasses for that loop. This avoids trouble with the PassManager
trying to call verifyAnalysis on them, and frees up some memory
sooner rather than later.

llvm-svn: 82945

tidy it up a little.

llvm-svn: 82944

used to support GlobalVariables storing MDNodes, back when they were derived
from Constant before the introduction of NamedMDNode, but never removed.

llvm-svn: 82943

operand is now at index 2, rather than 3. This fixes the
"Invalid child # of SDNode!" failures on PowerPC.

llvm-svn: 82942

RegionStoreManager::InvalidateRegion() by only removing their old
binding, not conjuring a new symbol.

llvm-svn: 82939

llvm-svn: 82936

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

llvm-svn: 82935

instructions' optimization flags.

llvm-svn: 82934

llvm-svn: 82933

malloc isn't needed.

llvm-svn: 82932

llvm-svn: 82931

llvm-svn: 82930

llvm-svn: 82929

when the loop inspects the bitcast operand.

llvm-svn: 82928

llvm-svn: 82927

to directive handlers and allows for easier extensibility.

I only switched a few over for now.

llvm-svn: 82926

llvm-svn: 82925

llvm-svn: 82924

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

llvm-svn: 82923

<rdar://problem/6914474> checker doesn't realize that variable might
have been assigned if a pointer to that variable was passed to another
function via a structure

The problem here was the RegionStoreManager::InvalidateRegion didn't
invalidate the bindings of invalidated regions.  This required a
rewrite of this method using a worklist.

As part of this fix, changed ValueManager::getConjuredSymbolVal() to
require a 'void*' SymbolTag argument.  This tag is used to
differentiate two different symbols created at the same location.

llvm-svn: 82920

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

llvm-svn: 82917

llvm-svn: 82915

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: 82912

llvm-svn: 82911

llvm-svn: 82910

llvm-svn: 82909

llvm-svn: 82908

llvm-svn: 82907

DEBUG_RUNTIME.

llvm-svn: 82906

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