pipeline model.

llvm-svn: 60733

for spotting these!

llvm-svn: 60728

llvm-svn: 60727

jump threading has been shown to only expose problems not
have bugs itself.  I'm sure it's completely bug free! ;-)

llvm-svn: 60725

llvm-svn: 60711

llvm-svn: 60707

avoids GCC's warning even on 64-bit hosts.

llvm-svn: 60706

llvm-svn: 60705

llvm-svn: 60703

Thanks Duncan!

llvm-svn: 60702

llvm-svn: 60701

llvm-svn: 60698

llvm-svn: 60697

and use it in x86 address mode folding. Also, make
getRegForValue return 0 for illegal types even if it has a
ValueMap for them, because Argument values are put in the
ValueMap. This fixes PR3181.

llvm-svn: 60696

track of whether the CachedNonLocalPointerInfo for a block is specific
to a block.  If so, just return it without any pred scanning.  This is
good for a 6% speedup on GVN (when it uses this lookup method, which
it doesn't right now).

llvm-svn: 60695

llvm-svn: 60694

remove some more 64-bit divs and rems from the StructLayout 
ctor.

llvm-svn: 60692

as suggested in PR3182.

llvm-svn: 60691

llvm-svn: 60690

llvm-svn: 60689

AND.  This is speedup on any reasonable target, but particularly
on 32-bit targets where this often turns into a libcall like udivdi3.

We know that alignments are a power of two but the compiler doesn't.

llvm-svn: 60688

llvm-svn: 60687

llvm-svn: 60685

llvm-svn: 60684

llvm-svn: 60683

to allow the "safe" backend to be run with a different path, and/or
with different command-line options.

This enables the following use cases:
 - bugpoint llc against an llc command from a different build
 - bugpoint llc against the same llc with different command-line options
 - and more...

Also, document the existing "custom" interpreter options.

llvm-svn: 60681

llvm-svn: 60679

llvm-svn: 60678

in a really obscure way, but more importantly has the side effect
of avoiding a GCC warning in the case that IntType is bool.

llvm-svn: 60677

useful.

llvm-svn: 60674

llvm-svn: 60673

llvm-svn: 60672

llvm-svn: 60671

llvm-svn: 60670

llvm-svn: 60669

llvm-svn: 60668

Makes (forward) work better.

llvm-svn: 60667

llvm-svn: 60666

llvm-svn: 60665

llvm-svn: 60664