llvm-svn: 55779

llvm-svn: 55777

llvm-svn: 55769

llvm-svn: 55766

Dan or Evan, please review.

llvm-svn: 55764

llvm-svn: 55763

Fix an overly strict assertion. Source register of a copy may not be killed, it may be killed by an implicit super-register use.

llvm-svn: 55762

Remove code that pad number of bytes to pop for X86_FastCall CC. The code doesn't do the "aligning" for Cygwin, Mingw, and Windows. But aligning it on Darwin and Linux breaks gcc compatibility. That ruled out all the platforms we support!

llvm-svn: 55756

No functional change (and no FE change to generate them).

llvm-svn: 55753

in FastISel.

llvm-svn: 55748

classes in the llvm namespace having members with types from
anonymous namespaces.

llvm-svn: 55747

HandlePHINodesInSuccessorBlocks that works FastISel-style. This
allows PHI nodes to be updated correctly while using FastISel.

This also involves some code reorganization; ValueMap and
MBBMap are now members of the FastISel class, so they needn't
be passed around explicitly anymore. Also, SelectInstructions
is changed to SelectInstruction, and only does one instruction
at a time.

llvm-svn: 55746

llvm-svn: 55745

llvm-svn: 55744

llvm-svn: 55742

llvm-svn: 55740

Initial version of a Partial Specialization IPO pass.  It triggers a couple hundred times on 176.gcc.  I don't know the performance impact yet, the heuristic is quite simple still.

llvm-svn: 55734

list that have internal linkage; the linker doesn't need
or want this.  (These objects must still be preserved
at compile time, so just removing them from the llvm.used
list doesn't work.)  Should affect only Darwin.

llvm-svn: 55722

llvm-svn: 55720

llvm-svn: 55717

llvm-svn: 55716

analysis would bail out without removing function
records for other members of the SCC (which may exist
if those functions read or wrote global variables).
Since these are initialized to "readnone", this
resulted in incorrect alias analysis results.

llvm-svn: 55714

llvm-svn: 55713

llvm-svn: 55712

llvm-svn: 55711

llvm-svn: 55708

llvm-svn: 55704

Fix an issue where we were reusing materializations of constants in blocks not dominated by the materialization.  This is
the simple fix, materializing the constant before every use.  It might be better to either track domination of uses or
to materialize all constants and the beginning of the function and let remat sort when to do materialization at uses.

llvm-svn: 55703

and SelectionDAGLowering classes, out of SelectionDAGISel.cpp and put
it in a separate file, SelectionDAGBuild.cpp.

llvm-svn: 55701

llvm-svn: 55700

routines and move them into a separate file, ScheduleDAGEmit.cpp.

llvm-svn: 55699

when searching for redundant subregister dead/kill bits.

Previously it was common to see instructions marked like this:
  "RET %EAX<imp-use,kill>, %AX<imp-use,kill>"

With this change, addRegisterKilled continues scanning after
finding the %EAX operand, so it proceeds to discover the
redundant %AX kill and eliminates it, producing this:
  "RET %EAX<imp-use,kill>"

This currently has no effect on the generated code.

llvm-svn: 55698

doesNotAccessMemory, check doesNotAccessMemory
first, since otherwise functions may be
marked readonly rather than readnone.

llvm-svn: 55697

callgraph, when one member of a SCC calls another
then the analysis would drop to mod-ref because
there is (usually) no function info for the callee
yet; fix this.  Teach the analysis about function
attributes, in particular the readonly attribute
(which requires being careful about globals).

llvm-svn: 55696

equivalence.

llvm-svn: 55694

llvm-svn: 55693

llvm-svn: 55692

llvm-svn: 55690

be folded. Instead, fail to fold the entire vector.

We could also return a vector with some elements folded and some not. If anyone
thinks that's a better approach, please speak up!

llvm-svn: 55689

Fix capitalization in #include of FastISel.h.  This unbreaks the build on case-sensitive filesystems.

llvm-svn: 55687