by valgrind where we were doing the wrong thing in the presence of invalid
exception specs.

llvm-svn: 121770

llvm-svn: 121769

llvm-svn: 121768

llvm-svn: 121765

   which is simpler than finding a place to insert in BB.
 - Don't perform the 'if condition hoisting' xform on certain
   i1 PHIs, as it interferes with switch formation.

This re-fixes "example 7", without breaking the world hopefully.

llvm-svn: 121764

llvm-svn: 121763

first, it can kick in on blocks whose conditions have been
folded to a constant, even though one of the edges will be
trivially folded.

second, it doesn't clean up the "if diamond" that it just 
eliminated away.  This is a problem because other simplifycfg
xforms kick in depending on the order of block visitation,
causing pointless work.

llvm-svn: 121762

breaking the selfhost builds, though I can't fathom how.

llvm-svn: 121761

when all 2-entry phis are simplified away.

llvm-svn: 121760

llvm-svn: 121759

don't print it unless the xform happens.

llvm-svn: 121758

llvm-svn: 121757

llvm-svn: 121756

llvm-svn: 121755

GetIfCondition faster by avoiding pred_iterator.  No
really interesting change.

llvm-svn: 121754

llvm-svn: 121753

class to be passed around.  The line between argument and return types and
everything else is kindof vague, but I think it's justifiable.

llvm-svn: 121752

code a bit, switch from constant folding to instsimplify.

llvm-svn: 121751

llvm-svn: 121750

work, but fixes 400.perlbmk.

llvm-svn: 121749

before trying to use it.

llvm-svn: 121748

instruction based on the t_addrmode_s# mode and what it returned. There is some
obvious badness to this. In particular, it's hard to do MC-encoding when the
instruction may change out from underneath you after the t_addrmode_s# variable
is finally resolved.

The solution is to revert a long-ago change that merged the reg/reg and reg/imm
versions. There is the addition of several new addressing modes. They no longer
have extraneous operands associated with them. I.e., if it's reg/reg we don't
have to have a dummy zero immediate tacked on to the SDNode.

There are some obvious cleanups here, which will happen shortly.

llvm-svn: 121747

llvm-svn: 121746

values or persistent expression variables. Now if an expression consists of
a value that is a child of a variable, or of a persistent variable only, we
will create a value object for it and make a ValueObjectConstResult from it to
freeze the value (for program variables only, not persistent variables) and
avoid running JITed code. For everything else we still parse up and JIT code
and run it in the inferior. 

There was also a lot of clean up in the expression code. I made the 
ClangExpressionVariables be stored in collections of shared pointers instead
of in collections of objects. This will help stop a lot of copy constructors on
these large objects and also cleans up the code considerably. The persistent
clang expression variables were moved over to the Target to ensure they persist
across process executions.

Added the ability for lldb_private::Target objects to evaluate expressions.
We want to evaluate expressions at the target level in case we aren't running
yet, or we have just completed running. We still want to be able to access the
persistent expression variables between runs, and also evaluate constant 
expressions. 

Added extra logging to the dynamic loader plug-in for MacOSX. ModuleList objects
can now dump their contents with the UUID, arch and full paths being logged with
appropriate prefix values.

Thread hardened the Communication class a bit by making the connection auto_ptr
member into a shared pointer member and then making a local copy of the shared
pointer in each method that uses it to make sure another thread can't nuke the
connection object while it is being used by another thread.

Added a new file to the lldb/test/load_unload test that causes the test a.out file
to link to the libd.dylib file all the time. This will allow us to test using
the DYLD_LIBRARY_PATH environment variable after moving libd.dylib somewhere else.

llvm-svn: 121745

llvm-svn: 121743

llvm-svn: 121742

llvm-svn: 121741

llvm-svn: 121740

the code to pass the _cmd pointer has been improved, and _cmd
is now set to the value of _cmd for the current context, as
opposed to being simply NULL.

llvm-svn: 121739

llvm-svn: 121738

spill weight. Filter out fixed registers instead.

Add support for reassigning an interference that was assigned to an alias.

llvm-svn: 121737

llvm-svn: 121736

Second attempt at make Thumb2 LEAs pseudos.  This time, perform the lowering much later, which makes the entire
process cleaner.

llvm-svn: 121735

llvm-svn: 121734

Fix recent buildbot breakage by pulling SimplifyCFG back to its state as of r121694, the most recent state
where I'm confident there were no crashes or miscompilations.  XFAIL the test added since then for now.

llvm-svn: 121733

Test has fixme, to move to .s -> .o test when AsmParser works better.

llvm-svn: 121732

Use the same COPY_TO_REGCLASS approach as for the 2-register *_sfp instructions.
This change made a big difference in the code generated for the
CodeGen/Thumb2/cross-rc-coalescing-2.ll test: The coalescer is still doing
a fine job, but some instructions that were previously moved outside the loop
are not moved now.  It's using fewer VFP registers now, which is generally
a good thing, so I think the estimates for register pressure changed and that
affected the LICM behavior.  Since that isn't obviously wrong, I've just
changed the test file.  This completes the work for Radar 8711675.

llvm-svn: 121730

llvm-svn: 121729

temporarily disable part of my previous patch, which causes an iterator invalidation issue, causing a crash on some versions of perlbmk.

llvm-svn: 121728

llvm-svn: 121727