llvm-svn: 121801

registers that alias Reg, including itself. This is almost the same as the
existing getAliasSet() method, except for the inclusion of Reg.

The name matches the reflexive TRI::regsOverlap(x, y) relation.

It is very common to do stuff to a register and all its aliases:

  stuff(Reg)
  for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias)
    stuff(*Alias);

That can now be written as the simpler:

  for (const unsigned *Alias = TRI->getOverlaps(Reg); *Alias; ++Alias)
    stuff(*Alias);

This change requires a bit more constant space for the alias lists because Reg
is included and because the empty alias list cannot be shared any longer.

If the getAliasSet method is eventually removed, this space can be reclaimed by
sharing overlap lists. For instance, %rax and %eax have identical overlap sets.

llvm-svn: 121800

llvm-svn: 121798

llvm-svn: 121797

linked with a dylib which has been relocated by specifying the DYLD_LIBRARY_PATH environment
variable.  Test that the function name breakpoint defined in the dylib is resolved.

llvm-svn: 121796

llvm-svn: 121795

is the addition of the FoldableAsLoad & Rematerializable flags to some of the
load instructions. ARM has these flags set for them.

llvm-svn: 121794

regB = move RCX
regA = op regB, regC
RAX  = move regA
where both regB and regC are killed. If regB is constrainted to non-compatible
physical registers but regC is not constrainted at all, then it's better to
commute the instruction.
       movl    %edi, %eax
       shlq    $32, %rcx
       leaq    (%rcx,%rax), %rax
=>
       movl    %edi, %eax
       shlq    $32, %rcx
       orq     %rcx, %rax
rdar://8762995

llvm-svn: 121793

llvm-svn: 121792

warning in the opt build.

llvm-svn: 121791

llvm-svn: 121790

llvm-svn: 121789

llvm-svn: 121788

llvm-svn: 121785

llvm-svn: 121784

llvm-svn: 121783

o SBFrame.LookupVar -> FindVariable
o SBFrame.LookupVarInScope -> FindValue

llvm-svn: 121782

LiveIntervalUnions.

llvm-svn: 121781

llvm-svn: 121780

Fix small bugs:

- Make sure cmd_obj & cmd_obj_sp contain a valid objects before attempting to 
dereference, in CommandObjectCommandsAlias::Execute and 
CommandInterpreter::HandleCommand.

- Modify CommandInterpreter::GetCommandSPExact to properly handle
multi-word command inputs.

llvm-svn: 121779

set for interworking to work properly. rdar://8755956

llvm-svn: 121778

	SBValue SBFrame::LookupVar(const char *name);
To
	SBValue SBFrame::FindVariable (const char *name);

Changed:
	SBValue LookupVarInScope (const char *name, const char *scope);
to
	SBValue FindValue (const char *name, ValueType value_type);

The latter makes it possible to not only find variables (params, locals, globals, and statics), but we can also now get register sets, registers and persistent variables using the frame as the context.

llvm-svn: 121777

the basic casting logic to insert intermediate casts and preserve the
exact complex-cast design.  Fixes a crash in the test suite.

llvm-svn: 121776

does not result in a newly created persistent variable.  The old one is returned,
instead.

llvm-svn: 121775

llvm-svn: 121774

Populate the variable list from the stack frame, first.

llvm-svn: 121773

llvm-svn: 121772

llvm-svn: 121771

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