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

llvm-svn: 55695

equivalence.

llvm-svn: 55694

llvm-svn: 55693

llvm-svn: 55692

Make UpdateValueMap, createResultReg, etc. protected instead of private so they can used by target hooks.

llvm-svn: 55691

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

llvm-svn: 55685

llvm-svn: 55682

llvm-svn: 55680

Let tblgen only generate fastisel routines, not the class definition. This makes it easier for targets to define its own fastisel class.

llvm-svn: 55679

llvm-svn: 55678

llvm-svn: 55676

llvm-svn: 55674

llvm-svn: 55673

llvm-svn: 55668

llvm-svn: 55657

llvm-svn: 55656

xfail old test for ppc.

llvm-svn: 55651

llvm-svn: 55648

llvm-svn: 55647

llvm-svn: 55646

llvm-svn: 55645

llvm-svn: 55643

even in FastISel mode in the case where FastISel successfully 
selects all the instructions. 

llvm-svn: 55641

llvm-svn: 55638

disabled until issues with gcc 4.1 on linux 32-bit are resolved.

llvm-svn: 55636

llvm-svn: 55632

# first commit to llvm, so whatch out :)

llvm-svn: 55631

llvm-svn: 55628

llvm-svn: 55626

llvm-svn: 55625

llvm-svn: 55624

Change getBinaryCodeForInstr prototype. First operand MachineInstr& should be const. Make corresponding changes.

llvm-svn: 55623

The first can update the SDNode in an SDValue
while the second is called with SDNode* and
returns a possibly updated SDNode*.

This patch has no intended functional impact,
but helps eliminating ugly temporary SDValues.

llvm-svn: 55608

(what matters is that it is added to the worklist),
it seems more logical to return it.

llvm-svn: 55606