llvm-svn: 17781

* Implement getDirectoryContents * Implement getStatusInfo * Implement setStatusInfo * Implement renameFile

llvm-svn: 17780

llvm-svn: 17779

llvm-svn: 17778

llvm-svn: 17777

llvm-svn: 17776

llvm-svn: 17775

Implement the MoreHelp utility that calls a function to printmore help information if the MoreHelp global is not null.

llvm-svn: 17774

llvm-svn: 17773

llvm-svn: 17772

llvm-svn: 17771

llvm-svn: 17770

llvm-svn: 17769

llvm-svn: 17768

Completely rewritten to allow reading of archives and symbol table lookup in a more efficient manner.

llvm-svn: 17767

llvm-svn: 17766

llvm-svn: 17765

llvm-svn: 17764

llvm-svn: 17763

llvm-svn: 17751

llvm-svn: 17750

llvm-svn: 17749

llvm-svn: 17748

value.  This allows us to turn more globals into constants and eliminate them.
This patch implements GlobalOpt/load-store-global.llx.

Note that this patch speeds up 255.vortex from:

Output/255.vortex.out-cbe.time:program 7.640000
Output/255.vortex.out-llc.time:program 9.810000

to:

Output/255.vortex.out-cbe.time:program 7.250000
Output/255.vortex.out-llc.time:program 9.490000

Which isn't bad at all!

llvm-svn: 17746

llvm-svn: 17744

llvm-svn: 17742

If this happens, detect it early instead of relying on instcombine to notice
it later.  This can be a big speedup, because PHI nodes can have many
incoming values.

llvm-svn: 17741

This exposes subsequent optimization possiblities and reduces code size.
This triggers 1423 times in spec.

llvm-svn: 17740

  %X = alloca ...
  %Y = alloca ...
    X == Y

into false.  This allows us to simplify some stuff in eon (and probably
many other C++ programs) where operator= was checking for self assignment.
Folding this allows us to SROA several additional structs.

llvm-svn: 17735

llvm-svn: 17734

llvm-svn: 17733

Exclude bigfib, so that we effectively exclude all C++ benchmarks.
Update to-do list: mention va_start.

llvm-svn: 17732

constant value.  This makes the return value dead and allows for
simplification in the caller.

This implements IPConstantProp/return-constant.ll

This triggers several dozen times throughout SPEC.

llvm-svn: 17730

not zero.

llvm-svn: 17728

of the array is just two.  This occurs 8 times in gcc, 6 times in crafty, and
12 times in 099.go.

This implements ScalarRepl/sroa_two.ll

llvm-svn: 17727

llvm-svn: 17725

llvm-svn: 17724

llvm-svn: 17723

llvm-svn: 17722

llvm-svn: 17721