llvm-svn: 50836

llvm-svn: 50833

llvm-svn: 50828

by an instance of LibCallInfo to provide mod/ref info of
standard library functions.  This is powerful enough to
say that 'sqrt' is readonly except that it modifies errno,
or that "printf doesn't store to memory unless the %n
constraint is present" etc.

llvm-svn: 50827

llvm-svn: 50826

on x86-64 linux.  This causes no regressions on
32 bit linux and 32 bit ppc.  More tests pass
on 64 bit ppc with no regressions.  I didn't
turn on eh on 64 bit linux because the intrinsics
needed to compile the eh runtime aren't done
yet.  But if you turn it on and link with the
mainline runtime then eh seems to work fine
on x86-64 linux with this patch.  Thanks to
Dale for testing.  The main point of the patch
is that if you output that some object is
encoded using 4 bytes you had better not output
8 bytes for it: the patch makes everything
consistent.

llvm-svn: 50825

llvm-svn: 50823

llvm-svn: 50821

Currently is sufficient to describe mod/ref behavior but will hopefully
eventually be extended for other purposes.

This isn't used by anything yet.

llvm-svn: 50820

llvm-svn: 50805

%ecx = op
store %cl<kill>, (addr)
(addr) = op %al

It's not safe to unfold the last operand and eliminate store even though %cl is marked kill. It's a sub-register use which means one of its super-register(s) may be used below.

llvm-svn: 50794

llvm-svn: 50793

llvm-svn: 50789

llvm-svn: 50787

llvm-svn: 50786

fixed, revert this patch.

llvm-svn: 50782

llvm-svn: 50780

llvm-svn: 50778

we will need to strip all casts for intializer lookup.

llvm-svn: 50776

llvm-svn: 50775

llvm-svn: 50771

We need to update PHIs containing the exiting block, not the exit block.  We really should come up with better names for these.

llvm-svn: 50770

llvm-svn: 50768

llvm-svn: 50766

llvm-svn: 50765

llvm-svn: 50764

llvm-svn: 50763

llvm-svn: 50762

llvm-svn: 50761

llvm-svn: 50760

llvm-svn: 50759

llvm-svn: 50757

llvm-svn: 50756

llvm-svn: 50755

llvm-svn: 50754

llvm-svn: 50752

llvm-svn: 50750

llvm-svn: 50749

llvm-svn: 50748

llvm-svn: 50746