llvm-svn: 50836

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

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

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

%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

we will need to strip all casts for intializer lookup.

llvm-svn: 50776

llvm-svn: 50775

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: 50713

llvm-svn: 50706

llvm-ar being unable to rename files.

llvm-svn: 50702

llvm-svn: 50699

llvm-svn: 50698

llvm-svn: 50696

llvm-svn: 50695

ComputeMaskedBits handles, just use a 'default:'. This avoids
TargetLowering's list getting out of date with SelectionDAG's.

llvm-svn: 50693

ComputeMaskedBits.

llvm-svn: 50692

llvm-svn: 50687

llvm-svn: 50681

llvm-svn: 50677

llvm-svn: 50675

themselves weren't in the anonymous namespace.

llvm-svn: 50673

DemoteRegToStack doesn't work with MRVs yet, because it relies on the
ability to load/store things.

This fixes PR2285.

llvm-svn: 50667

llvm-svn: 50663

llvm-svn: 50660

llvm-svn: 50659

llvm-svn: 50654

ELF headers. The ELF writer still isn't generally usable though.

llvm-svn: 50652

llvm-svn: 50649

the code being generated does not require an executable stack.

Also, add target-specific code to make use of this on Linux
on x86. 

llvm-svn: 50634

but should work. Work is in progress, more models will follow

llvm-svn: 50630

llvm-svn: 50621

llvm-svn: 50620

Select vector shift with non-immediate i32 shift amount operand by first moving the operand into the right register.

llvm-svn: 50619

using dyn_cast<> on already freed memory.

llvm-svn: 50618

llvm-svn: 50607

llvm-svn: 50604

Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This allow us to simplify the horribly complicated matching code.

llvm-svn: 50601

llvm-svn: 50600