llvm-svn: 15601

llvm-svn: 15600

llvm-svn: 15599

This should go into the 1.3 branch

llvm-svn: 15593

llvm-svn: 15592

llvm-svn: 15591

llvm-svn: 15590

* Make header comment span 80 cols

llvm-svn: 15589

llvm-svn: 15588

llvm-svn: 15587

llvm-svn: 15586

llvm-svn: 15585

* Wrap long code lines

llvm-svn: 15584

llvm-svn: 15583

* Simplify code and shorten lines by not recomputing values

llvm-svn: 15582

llvm-svn: 15581

llvm-svn: 15580

that TableGen creates for them, e.g. CodeEmitter, AsmPrinter, etc.

llvm-svn: 15579

llvm-svn: 15578

llvm-svn: 15577

file since it doesn't belong in the man page.

llvm-svn: 15575

worthy of review at this point. There is much thought and content remaining
to be written.

llvm-svn: 15574

push onto the top of the stack like x86, which uses the local area
offset.  This will allow the removal of PowerPCPEI.cpp soon.

llvm-svn: 15573

llvm-svn: 15571

dangling constant users were removed from a function, causing it to be dead,
we never removed the call graph edge from the external node to the function.

In most cases, this didn't cause a problem (by luck).  This should definitely
go into 1.3

llvm-svn: 15570

llvm-svn: 15569

1. Fix a REALLY nasty cyclic replacement issue that Anshu discovered, causing
   nondeterminstic crashes and memory corruption.
2. For performance, don't go inserting constantexpr casts of GV pointers.

This should definitely go into 1.3

llvm-svn: 15568

should go into 1.3

llvm-svn: 15567

for this information as it belongs in a larger document on the subject of
llvmc.

llvm-svn: 15566

been initialized.

llvm-svn: 15565

llvm-svn: 15564

llvm-svn: 15563

llvm-svn: 15562

aimed more at the comiler writer than the llvmc user later in the document.

llvm-svn: 15561

llvm-svn: 15555

llvm-svn: 15553

being documented before being written to foster discussion about what the
tool should do. Eventually, we'll achieve a decision point at which time
this document forms the requirements for the tool from which it will be
coded.

llvm-svn: 15552

llvm-svn: 15543

llvm-svn: 15537

Changes commited for Nate Begeman:

Use a PowerPC specific prolog epilog inserter to control where spilled
callee save regs are placed on the stack.
Get rid of implicit return address stack slot, save return address reg
(LR) in appropriate slot
Improve code generated for functions that don't have calls or access
globals


Note from Chris: PowerPCPEI will eventually be eliminated, once the
functionality is merged into CodeGen/PrologEpilogInserter.cpp

llvm-svn: 15536