Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none.

llvm-svn: 84911

Use 'waitpid' instead of 'wait'.  Basing Program::Wait() on 'wait()' prevents it being correct within a multithreaded context.

This address: PR 5277 (Program::Wait is unsafe to call from multiple threads).

Note: If waitpid() turns out to be non-portable, we can add more autoconf magic, or look into
another solution.

llvm-svn: 84903

llvm-svn: 84898

llvm-svn: 84895

llvm-svn: 84894

llvm-svn: 84886

llvm-svn: 84885

llvm-svn: 84884

llvm-svn: 84878

llvm-svn: 84868

before freeing them.

llvm-svn: 84859

llvm-svn: 84849

Move if-conversion before post-regalloc scheduling so the predicated instruction get scheduled properly.

llvm-svn: 84843

Load / store multiple was missing opportunites when the load / store bundles are at the end of the bb. Test case is already in, the bug is exposed by subsequent commit.

llvm-svn: 84842

 

llvm-svn: 84841

to libanalysis.  Instcombine shrinking... does this even 
make sense???

llvm-svn: 84840

Analysis/ConstantFolding.cpp.  This doesn't change the behavior of
instcombine but makes other clients of ConstantFoldInstruction
able to handle loads.  This was partially extracted from Eli's patch
in PR3152.

llvm-svn: 84836

llvm-svn: 84832

llvm-svn: 84831

llvm-svn: 84826

llvm-svn: 84820

llvm-svn: 84813

llvm-svn: 84811

llvm-svn: 84810

Yay for ASCII graphics!

llvm-svn: 84808

llvm-svn: 84806

Pass StringRef by value.

llvm-svn: 84804

to break up CFG diamonds by banishing one of the blocks to the end of
the function, which is bad for code density and branch size.

This does pessimize MultiSource/Benchmarks/Ptrdist/yacr2, the
benchmark cited as the reason for the change, however I've examined
the code and it looks more like a case of gaming a particular
branch than of being generally applicable.

llvm-svn: 84803

llvm-svn: 84801

patches for fixes like this instead of committing them directly.

llvm-svn: 84799

llvm-svn: 84798

llvm-svn: 84797

llvm-svn: 84795

llvm-svn: 84794

llvm-svn: 84792

for a few bugs.

llvm-svn: 84791

llvm-svn: 84790

llvm-svn: 84786

llvm-svn: 84785

llvm-svn: 84784