This is the initial draft of the Compiler Driver documentation. It is not
worthy of review at this point. There is much thought and content remaining
to be written.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15574 91177308-0d34-0410-b5e6-96231b3b80d8

Fix stack size processing now that the return address isn't an implied
push onto the top of the stack like x86, which uses the local area
offset.  This will allow the removal of PowerPCPEI.cpp soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15573 91177308-0d34-0410-b5e6-96231b3b80d8

This isn't a bug, it's a missing feature

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15571 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another really nasty regression that Anshu pointed out.  In cases where
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15570 91177308-0d34-0410-b5e6-96231b3b80d8

Add standard print/dump methods to CallGraph classes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15569 91177308-0d34-0410-b5e6-96231b3b80d8

Two fixes:
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15568 91177308-0d34-0410-b5e6-96231b3b80d8

This DEBUG is buggy.  comment it out because it's not worth fixing.  This
should go into 1.3

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15567 91177308-0d34-0410-b5e6-96231b3b80d8

Added information about the configuration file. This is a temporary home
for this information as it belongs in a larger document on the subject of
llvmc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15566 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of a warning when compiling optimized. Uninitialized variable has
been initialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15565 91177308-0d34-0410-b5e6-96231b3b80d8

Ok get rid of the REST of the tabs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15564 91177308-0d34-0410-b5e6-96231b3b80d8

Death to tabs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15563 91177308-0d34-0410-b5e6-96231b3b80d8

Correct spelling mistakes. Wrap lines at 80 columns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15562 91177308-0d34-0410-b5e6-96231b3b80d8

Various updates suggested by Misha and Chris. Moved material that is
aimed more at the comiler writer than the llvmc user later in the document.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15561 91177308-0d34-0410-b5e6-96231b3b80d8

dumpSavedState has outlived its usefulness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15555 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase for critical 1.3 feature

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15553 91177308-0d34-0410-b5e6-96231b3b80d8

First version of a manual page for the llvmc compiler driver. This tool is
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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15552 91177308-0d34-0410-b5e6-96231b3b80d8

Split assertion to two in order to give better assertion messages.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15543 91177308-0d34-0410-b5e6-96231b3b80d8

Now without stinky dos newlines!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15537 91177308-0d34-0410-b5e6-96231b3b80d8

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15536 91177308-0d34-0410-b5e6-96231b3b80d8

Update the To-Do list according to my notes + assertions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15535 91177308-0d34-0410-b5e6-96231b3b80d8

Added Louis Gerbarg.  Louis is given credit in the CREDITS.TXT file, so I
assume Louis also holds copyright.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15534 91177308-0d34-0410-b5e6-96231b3b80d8

More prominantly mention ppc support, more accurately describe its status

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15533 91177308-0d34-0410-b5e6-96231b3b80d8

* Mention PowerPC as new feature, and experimental feature
* Wrap long lines to 80 cols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15532 91177308-0d34-0410-b5e6-96231b3b80d8

Add additional copyright notice for the PowerPC backend.
Thanks Nate!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15531 91177308-0d34-0410-b5e6-96231b3b80d8

Split out -disable-codegen into -disable-llc and -disable-jit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15530 91177308-0d34-0410-b5e6-96231b3b80d8

We now have the PowerPC backend, thanks to Nate Begeman and Luis Gerbarg!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15529 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify makefile by combining all TableGen dependencies into one variable

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15527 91177308-0d34-0410-b5e6-96231b3b80d8

while we're at it, make the libraries be on separate lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15526 91177308-0d34-0410-b5e6-96231b3b80d8

Lines need to end with \ to make sure they're actually continued

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15525 91177308-0d34-0410-b5e6-96231b3b80d8

* Add PowerPC library to LLC
* Fit used libraries on a few lines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15524 91177308-0d34-0410-b5e6-96231b3b80d8

PowerPC is a real target now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15522 91177308-0d34-0410-b5e6-96231b3b80d8

This file is obsolete

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15521 91177308-0d34-0410-b5e6-96231b3b80d8

Make GlobalVariable constructor assert when an initializer is of
incorrect type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15519 91177308-0d34-0410-b5e6-96231b3b80d8

sparcv9select is history.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15516 91177308-0d34-0410-b5e6-96231b3b80d8

C++ support does not live in the C runtime any longer

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15515 91177308-0d34-0410-b5e6-96231b3b80d8

Two files are moved to libstdc++, and a NOTE gets added

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15514 91177308-0d34-0410-b5e6-96231b3b80d8

Add missing copyrights

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15513 91177308-0d34-0410-b5e6-96231b3b80d8

Turn a use of intptr_t into a reinterpret_cast<uint64_t> instead to get
rid of compilation warnings on some platforms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15512 91177308-0d34-0410-b5e6-96231b3b80d8

Fix another minor problem that exists if you ahve multiple functions with
nonunifiable types but the same name.  Down with PR411!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15511 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a typeo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15510 91177308-0d34-0410-b5e6-96231b3b80d8

Add a hack to work around a problem my changes exposed

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15509 91177308-0d34-0410-b5e6-96231b3b80d8

* Added documentation in the file header
* Shorten assert() text to make it fit within 80 cols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15508 91177308-0d34-0410-b5e6-96231b3b80d8

Surround code element with <tt> tags

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15507 91177308-0d34-0410-b5e6-96231b3b80d8

Hand-propagate the constant TARGET_NAME which was making lines wrap anyway

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15506 91177308-0d34-0410-b5e6-96231b3b80d8

* Remove unnecessary comment
* Fix alignment of code
* Tabs to spaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15505 91177308-0d34-0410-b5e6-96231b3b80d8

Align dependencies so they don't hurt the eyes to look at them

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15504 91177308-0d34-0410-b5e6-96231b3b80d8

* Convert C++ comments to C
* Add UIUC copyright notice headers

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15503 91177308-0d34-0410-b5e6-96231b3b80d8

Shared libraries are usually prepended with `lib'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15502 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused instruction classes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15501 91177308-0d34-0410-b5e6-96231b3b80d8

Make tablegen targets depend on PowerPCInstrFormats.td as well

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15500 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a latent bug exposed by my recent changes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15498 91177308-0d34-0410-b5e6-96231b3b80d8

Move method out of line

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15497 91177308-0d34-0410-b5e6-96231b3b80d8

It is not possible to catch SIGKILL, don't bother trying.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15496 91177308-0d34-0410-b5e6-96231b3b80d8

getValues does not exist

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15495 91177308-0d34-0410-b5e6-96231b3b80d8

getValues is gone

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15494 91177308-0d34-0410-b5e6-96231b3b80d8

Clean up whitespace.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15490 91177308-0d34-0410-b5e6-96231b3b80d8

Convert indentation to 2 spaces.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15489 91177308-0d34-0410-b5e6-96231b3b80d8

Remove uneeded getValues() functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15488 91177308-0d34-0410-b5e6-96231b3b80d8

Stop using getValues().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15487 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a major regression in my previous checkin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15486 91177308-0d34-0410-b5e6-96231b3b80d8

Stop using getValues().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15485 91177308-0d34-0410-b5e6-96231b3b80d8

getResultPos() is dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15484 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of the only use of TargetInstrInfo::getResultPos(), a deprecated method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15483 91177308-0d34-0410-b5e6-96231b3b80d8

Stop using getValues().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15482 91177308-0d34-0410-b5e6-96231b3b80d8

Add note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15481 91177308-0d34-0410-b5e6-96231b3b80d8

FindGlobalNamed used to take 2.92s out of 8.39s running a profile build of
gccld -disable-opt on 252.eon.

This patch deletes it and replaces it with a map.  The proper fix for this
is to fix PR411, but this will do in the short term.

gccld on eon now takes 5.51s, which is 50% faster than before this patch. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15480 91177308-0d34-0410-b5e6-96231b3b80d8

sparcv9select is history

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15479 91177308-0d34-0410-b5e6-96231b3b80d8

libsparcv9select is history

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15478 91177308-0d34-0410-b5e6-96231b3b80d8

These headers have been moved/merged into other files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15477 91177308-0d34-0410-b5e6-96231b3b80d8

Include SparcV9TmpInstr.h to pick up the def. of TmpInstruction,
instead of InstrSelection.h, which is dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15476 91177308-0d34-0410-b5e6-96231b3b80d8

Tighten up some whitespace.  Include SparcV9TmpInstr.h to pick up
the def. of TmpInstruction, instead of InstrSelection.h, which is
dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15475 91177308-0d34-0410-b5e6-96231b3b80d8

Include SparcV9BurgISel.h, to pick up the definition of
createSparcV9BurgInstSelector().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15474 91177308-0d34-0410-b5e6-96231b3b80d8

Include SparcV9TmpInstr.h instead of llvm/CodeGen/InstrSelection.h, to pick
up the definition of class TmpInstruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15473 91177308-0d34-0410-b5e6-96231b3b80d8

Include SparcV9BurgISel.h, because PreSelection uses routines from within
the SparcV9 BURG instruction selector.  Eww!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15472 91177308-0d34-0410-b5e6-96231b3b80d8

Add a Doxygen comment, and inline the constructor (which is now almost empty).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15471 91177308-0d34-0410-b5e6-96231b3b80d8

The InstrForest data type has moved from llvm/CodeGen/InstrForest.h
to SparcV9InstrForest.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15470 91177308-0d34-0410-b5e6-96231b3b80d8

Add a new file containing just TmpInstruction and its implementation.
Many other pieces of the SparcV9 backend want to use TmpInstruction, but
don't need any other instruction selector baggage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15469 91177308-0d34-0410-b5e6-96231b3b80d8

All the SparcV9 BURG instruction selector pieces have been collected into the
new file SparcV9BurgISel.cpp, with exposed interfaces in SparcV9BurgISel.h.
The InstrSelection directory is now dead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15468 91177308-0d34-0410-b5e6-96231b3b80d8

I swear I compiled this, really I did.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15467 91177308-0d34-0410-b5e6-96231b3b80d8

Factor some code out, no substantial change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15466 91177308-0d34-0410-b5e6-96231b3b80d8

Concisify some code
Do not call FindGlobalNamed when we know we will ignore the result (because
we are not going to link a static symbol anyway).  This speeds up
gccld -disable-opt on 252.eon from 8.63s to 8.39s.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15465 91177308-0d34-0410-b5e6-96231b3b80d8

Fix linkage types

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15464 91177308-0d34-0410-b5e6-96231b3b80d8

Implement a FIXME, by not searching linearly through a map to remove an
element.  This speeds up the bytecode reader from 12.86s to 8.72s on 252.eon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15463 91177308-0d34-0410-b5e6-96231b3b80d8

New methods

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15462 91177308-0d34-0410-b5e6-96231b3b80d8

Minor efficiency improvements

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15461 91177308-0d34-0410-b5e6-96231b3b80d8

Squelch warnings in release mode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15460 91177308-0d34-0410-b5e6-96231b3b80d8

Now that ConstantPointerRef is gone, it is the case that all operands of constants
are themselves constants.  This should allow us to reduce a significant amount
of casting in the sourcebase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15459 91177308-0d34-0410-b5e6-96231b3b80d8

Add a special version of getType for ConstantPointerNull, exposing the fact
that all Null pointers have pointer type

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15458 91177308-0d34-0410-b5e6-96231b3b80d8

Add a cast

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15457 91177308-0d34-0410-b5e6-96231b3b80d8

Added note for PR413
Tools now respond to the --version option.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15456 91177308-0d34-0410-b5e6-96231b3b80d8

Change SymbolTable::insertEntry to be more careful about how many map
lookups it does.  This shaves another 5% off of bcreading 252.eon.  Note that
the proper solution to this problem is to fix PR411, but that will have to
wait until later.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15455 91177308-0d34-0410-b5e6-96231b3b80d8

Add a --version option for every tool that prints out:
Low Level Virtual Machine ($PACKAGE_NAME) $PACKAGE_VERSION

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15454 91177308-0d34-0410-b5e6-96231b3b80d8

Change the package identification to use one less level of quoting so that
PACKAGE_VERSION = "1.3" instead of "[1.3]". Rebuild configure script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15453 91177308-0d34-0410-b5e6-96231b3b80d8

Make getGlobalTableValue not use getTypeSlot, this speeds up the bc reader
by 5% on eon

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15452 91177308-0d34-0410-b5e6-96231b3b80d8

The Type* is redundant with the TypeSlot

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15451 91177308-0d34-0410-b5e6-96231b3b80d8

Do not do a linear std::find to reconstruct information we had, but later threw
away.  This speeds up by .bc reader by 30% in a profile build on 252.eon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15450 91177308-0d34-0410-b5e6-96231b3b80d8

Line length <= 80 cols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15449 91177308-0d34-0410-b5e6-96231b3b80d8

Fix some indentation (so brg can test commit script).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15448 91177308-0d34-0410-b5e6-96231b3b80d8

Remove unused opcodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15447 91177308-0d34-0410-b5e6-96231b3b80d8

Fix line lengths.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15446 91177308-0d34-0410-b5e6-96231b3b80d8