llvm-svn: 40607

llvm-svn: 40606

llvm-svn: 40603

llvm-svn: 40602

llvm-svn: 40599

use up the entire 32-bit address space.

llvm-svn: 40596

llvm-svn: 40595

This commit fixes two things.  One is a pair of VStudio compiler errors stemming from variables
which defined within the for loop statement and also within the body of the for loop.  I fixed these 
by renaming one of the two variables.  Additionally, I've made the Function*->ExFunc map in 
ExternalFunctions.cpp a ManagedStatic object, so that cleanup will be done on llvm_shutdown.  In repeated
uses of the interpreter, where the same Function* address may get used for completely differnet functions,
this was causing a crash.

llvm-svn: 40558

llvm-svn: 40546

almost the same things from LCSSA.

llvm-svn: 40540

from Relation::contradicts in Relation::incorporate.

llvm-svn: 40531

llvm-svn: 40503

llvm-svn: 40498

llvm-svn: 40497

llvm-svn: 40494

Note: This has not yet been thoroughly tested.  Use at your own risk.

llvm-svn: 40489

load elimination code from RedundantLoadElimination.

llvm-svn: 40469

llvm-svn: 40457

llvm-svn: 40456

llvm-svn: 40448

llvm-svn: 40445

llvm-svn: 40440

undefs.

llvm-svn: 40439

reported in PR 1556.

llvm-svn: 40133

llvm-svn: 40124

llvm-svn: 40102

pacifies g++-4.2.

llvm-svn: 40089

llvm-svn: 40085

llvm-svn: 40064

With this, the time to optimize 403.gcc is down to 15.1s.

llvm-svn: 40042

This results in a slight speedup for 403.gcc.

llvm-svn: 40040

reduces the time to optimize 403.gcc from 17.6s to 16.4s.

llvm-svn: 40036

llvm-svn: 40025

This fixes PR1559.

llvm-svn: 40024

beyond the end of an alloca to make FastDSE faster and more aggressive.

llvm-svn: 39945

dead stores on 400.perlbench.

llvm-svn: 39929

llvm-svn: 39921

llvm-svn: 39896

llvm-svn: 39894

First teach instcombine that sign bit checks only demand the 
sign bit, this allows simplify demanded bits to hack on 
expressions better.

Second, teach instcombine that ashr is useless if only the
sign bit is demanded.

llvm-svn: 39880