llvm-svn: 73749

llvm-svn: 73748

Latency information for ARM v6. It's rough and not yet hooked up. Right now  we are only using branch latency to determine if-conversion limits.

llvm-svn: 73747

while experimenting.  I'm reasonably sure this is correct, but please 
tell me if these instructions have some strange property which makes this
change unsafe.

llvm-svn: 73746

Fix weird class-size-being-different problems.  At some level this is being caused by config.h not being
included everywhere.

llvm-svn: 73745

llvm-svn: 73744

implementation.  The idea is that we want asmprinting to
work by converting MachineInstrs into a new MCInst class,
then the per-instruction asmprinter works on MCInst.  MCInst
and the new asmprinters will not depend on most of the 
llvm code generators.  This allows building diassemblers
that don't link in the whole llvm code generator.  This is
step #1 of many.

llvm-svn: 73743

into DarwinTargetAsmInfo.cpp.  The remaining differences should
be evaluated.  It seems strange that x86/arm has .zerofill but ppc
doesn't, etc.

llvm-svn: 73742

llvm-svn: 73739

llvm-svn: 73738

llvm-svn: 73737

llvm-svn: 73736

llvm-svn: 73734

llvm-svn: 73733

to be a test driver of other components in the system, which will develop
over time.

llvm-svn: 73732

llvm-svn: 73729

Add a parent pointer to SCEV, in preparation for getting rid of the global uniquing tables.  No functionality change.

llvm-svn: 73728

llvm-svn: 73727

llvm-svn: 73726

llvm-svn: 73725

llvm-svn: 73723

llvm-svn: 73722

llvm-svn: 73721

On Darwin, ams printer should output a second label before a jump table so the linker knows it's a new atom. But this is only needed if the jump table is put in a separate section from the function body.

llvm-svn: 73720

llvm-svn: 73719

as signed max tests. Along with r73717, this helps CodeGen avoid
emitting code for a maximum operation for this class of loop.

llvm-svn: 73718

comparisons were recognized for umax, but instcombine canonicalizes
unsigned comparisons with zero to this simpler form.

llvm-svn: 73717

llvm-svn: 73716

llvm-svn: 73715

llvm-svn: 73714

llvm-svn: 73712

llvm-svn: 73711

llvm-svn: 73710

Insert a SmartMutex templated class into the class hierarchy, which takes a template parameter specifying whether this mutex
should become a no-op when not running in multithreaded mode.  Make sys::Mutex a typedef of SmartMutex<false>, to preserve source compatibility.

llvm-svn: 73709

llvm-svn: 73708

llvm-svn: 73707

casted induction variables in cases where the cast
isn't foldable. It ended up being a pessimization in
many cases. This could be fixed, but it would require
a bunch of complicated code in IVUsers' clients. The
advantages of this approach aren't visible enough to
justify it at this time.

llvm-svn: 73706

C is not a low-bits mask, and add a similar instcombine for
zext((trunc(t) & C) ^ C).

llvm-svn: 73705

llvm-svn: 73704

llvm-svn: 73703