Doxygenify some comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15360 91177308-0d34-0410-b5e6-96231b3b80d8

Remove const from iterators passed by value.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15359 91177308-0d34-0410-b5e6-96231b3b80d8

Add declarations for insertGoto and reverseBranchCondition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15358 91177308-0d34-0410-b5e6-96231b3b80d8

I'm pretty sure that ba is branch always, which is a barrier.  Brg should
check this :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15357 91177308-0d34-0410-b5e6-96231b3b80d8

Mark barrier instructions.  Execution does not fall through uncond branches
or return intructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15356 91177308-0d34-0410-b5e6-96231b3b80d8

Support new flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15355 91177308-0d34-0410-b5e6-96231b3b80d8

New flag

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15354 91177308-0d34-0410-b5e6-96231b3b80d8

Add new M_BARRIER_FLAG flag, and isBarrier() method to TargetInstrInfo

opCode -> Opcode

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15353 91177308-0d34-0410-b5e6-96231b3b80d8

Add some machine CFG related stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15352 91177308-0d34-0410-b5e6-96231b3b80d8

Updated ModuloScheduling. It makes it  all the wya through register allocation on the new code!!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15351 91177308-0d34-0410-b5e6-96231b3b80d8

* Conditional save/restore of LR disabled as it's not quite correct
* sumarray2d fixed: large fixed-size alloca
* make is now compileable
* Re-organized tests to fit them under proper headings

Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15347 91177308-0d34-0410-b5e6-96231b3b80d8

Do not mark LR as callee-save: not quite correctly done.   Patch: Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15346 91177308-0d34-0410-b5e6-96231b3b80d8

* Temporarily suspend LR save/restore optimization as it is not quite correct
* Implement large fixed-size allocas            Entire patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15345 91177308-0d34-0410-b5e6-96231b3b80d8

Enable compilation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15344 91177308-0d34-0410-b5e6-96231b3b80d8

Fix De Morgan's name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15343 91177308-0d34-0410-b5e6-96231b3b80d8

Start using the PatternMatcher a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15342 91177308-0d34-0410-b5e6-96231b3b80d8

Check in some useful helper routines for doing ML-style pattern matching on
the LLVM IR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15341 91177308-0d34-0410-b5e6-96231b3b80d8

I demand the ability to say 'if (isa<Value>(V))'!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15340 91177308-0d34-0410-b5e6-96231b3b80d8

Convert a few assertions with side-effects into regular old runtime checks.
These side-effects seem to make a difference when using llc -march=sparcv9
in Release mode (i.e., with -DNDEBUG); when they are left out, lots of
instructions just get dropped on the floor, because they never end up
in the schedule.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15339 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403:
http://llvm.cs.uiuc.edu/PR403 .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15338 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15337 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15334 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403:
http://llvm.cs.uiuc.edu/PR403 .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15333 91177308-0d34-0410-b5e6-96231b3b80d8

Header moved

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15332 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403:
http://llvm.cs.uiuc.edu/PR403 .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15331 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h => Instructions.h as per PR403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15328 91177308-0d34-0410-b5e6-96231b3b80d8

Fix #includes of i*.h files => Instructions.h as per PR403

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15327 91177308-0d34-0410-b5e6-96231b3b80d8

Merge i*.cpp definitions into Instructions.cpp as part of bug403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15326 91177308-0d34-0410-b5e6-96231b3b80d8

Merge i*.h headers into Instructions.h as part of bug403.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15325 91177308-0d34-0410-b5e6-96231b3b80d8

Fix test/Regression/Analysis/BasicAA/2004-07-28-MustAliasbug.llx

This also fixes the miscompilation of MallocBench/gs with dead store
elimination enabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15324 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of a few dead method declarations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15323 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of calls to void llvm::printSet(const ValueSet &).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15322 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of calls to void llvm::printSet(const ValueSet &).
Use LiveRange's iterator types and operations instead of ValueSet's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15321 91177308-0d34-0410-b5e6-96231b3b80d8

Don't derive from ValueSet to implement class LiveRange; instead, use a
SetVector<Value *> data member.
Add << operator for LiveRanges (a dumb one, for now.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15320 91177308-0d34-0410-b5e6-96231b3b80d8

Fix a few typoes and grammaroes in comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15319 91177308-0d34-0410-b5e6-96231b3b80d8

Fix typo in comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15318 91177308-0d34-0410-b5e6-96231b3b80d8

Remove mustSaveAcrossCalls flag, which isn't ever read, and its mutator,
markForSaveAcrossCalls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15317 91177308-0d34-0410-b5e6-96231b3b80d8

Move Transforms/BasicAA to Analysis/BasicAA

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15316 91177308-0d34-0410-b5e6-96231b3b80d8

Due to a bug in BasicAA, DSE is incorrectly deleting the first store in
this testcase, causing the miscompilation of MallocBench/gs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15315 91177308-0d34-0410-b5e6-96231b3b80d8

Updates to reflect most recent changes to bytecode file format:
* Dependent libraries & target triple
* Short block headers
* 24-bit type slot ids.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15314 91177308-0d34-0410-b5e6-96231b3b80d8

Fix grammar, eliminate double parenthesized sentence fragment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15313 91177308-0d34-0410-b5e6-96231b3b80d8

* Wrap code listings in <div class="doc_code">
* Wrap keywords in <tt>
* Wrap lines at 80 cols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15312 91177308-0d34-0410-b5e6-96231b3b80d8

* Use the doc_code class for code listings to make it stand out from text
* Wrap text in soft, comfortable <div>s and <p>s
* Wrap lines at 80 cols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15311 91177308-0d34-0410-b5e6-96231b3b80d8

Put <tt> around verbatim code elements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15310 91177308-0d34-0410-b5e6-96231b3b80d8

Minor corrections

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15309 91177308-0d34-0410-b5e6-96231b3b80d8

TargetInstrInfo::hasOperandInterlock() is always true, because it is
never overridden by any target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15308 91177308-0d34-0410-b5e6-96231b3b80d8

Add notes on bug involving casting ulong -> double, thanks to Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15307 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify loading (un)signed constants to registers, patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15306 91177308-0d34-0410-b5e6-96231b3b80d8

Remove an extra 8 byte distance penalty.  Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15305 91177308-0d34-0410-b5e6-96231b3b80d8

Find longs by type, not by their primitive size being 64. Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15304 91177308-0d34-0410-b5e6-96231b3b80d8

LI can only take signed values, so values > 32767 can only be loaded with ORI

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15299 91177308-0d34-0410-b5e6-96231b3b80d8

Reorganize tests to place them in proper directories.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15298 91177308-0d34-0410-b5e6-96231b3b80d8

UnitTests 2003-05-26-Shorts and 2003-07-09-LoadShorts have been fixed;
2003-05-22-VarSizeArray is broken.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15297 91177308-0d34-0410-b5e6-96231b3b80d8

Fix printing of immediate operands by looking at their operand types in
the TargetInstrInfo.  This fixes UnitTests 2003-05-26-Shorts and
2003-07-09-LoadShorts.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15296 91177308-0d34-0410-b5e6-96231b3b80d8

Renamed files:
* PowerPCReg.td => PowerPCRegisterinfo.td
* PowerPCInstrs.td => PowerPCInstrInfo.td

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15295 91177308-0d34-0410-b5e6-96231b3b80d8

ConstantTypeMustBeLoaded has been incorporated into SparcV9PreSelection, its
only user.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15294 91177308-0d34-0410-b5e6-96231b3b80d8

This was the only user of TargetInstrInfo::ConstantTypeMustBeLoaded().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15293 91177308-0d34-0410-b5e6-96231b3b80d8

This is the regression test for the change to InstructionCombining.cpp
that I made today.  It illustrates that the old version of the code
would crash if the RHS of a multiplication were a ConstantExpr that
could not be resolved into a ConstantInt or ConstantFP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15292 91177308-0d34-0410-b5e6-96231b3b80d8

This change fixed a bug in the function visitMul.  The prior version
assumed that a constant on the RHS of a multiplication was either an
IntConstant or an FPConstant.  It checked for an IntConstant and then,
if it did not find one, did a hard cast to an FPConstant.  That code
would crash if the RHS were a ConstantExpr that was neither an
IntConstant nor an FPConstant.  This version replaces the hard cast
with a dyn_cast.  It performs the same way for IntConstants and
FPConstants but does nothing, instead of crashing, for constant
expressions.

The regression test for this change is 2004-07-27-ConstantExprMul.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15291 91177308-0d34-0410-b5e6-96231b3b80d8

*** empty log message ***

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15290 91177308-0d34-0410-b5e6-96231b3b80d8

Get rid of the (apparently non-working) filePrinterEmitter which is added in
debug mode.  Its only effect seems to be the creation of an empty file...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15289 91177308-0d34-0410-b5e6-96231b3b80d8

Branch selection support implemented by Nate Begeman for long branches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15288 91177308-0d34-0410-b5e6-96231b3b80d8

Fix the nightly tester to default to using gnuplot in /usr/bin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15287 91177308-0d34-0410-b5e6-96231b3b80d8

Correctly print out long branches, assert on finding pseudo instr COND_BRANCH
Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15286 91177308-0d34-0410-b5e6-96231b3b80d8

Run the branch selection pass right before the asm printer.
Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15285 91177308-0d34-0410-b5e6-96231b3b80d8

Remove empty unused method processFunctionBeforeFrameFinalized()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15284 91177308-0d34-0410-b5e6-96231b3b80d8

Add COND_BRANCH pseudo instruction, patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15283 91177308-0d34-0410-b5e6-96231b3b80d8

Build COND_BRANCHes which may become long or short, decided by a later pass.
Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15282 91177308-0d34-0410-b5e6-96231b3b80d8

Moved definition of invertPPCBranchOpcode() into PowerPCInstrInfo class.
Patch by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15281 91177308-0d34-0410-b5e6-96231b3b80d8

Add PowerPCBranchSelector to discover which are `long' branches.
Contributed by Nate Begeman.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15280 91177308-0d34-0410-b5e6-96231b3b80d8

TargetInstrInfo::getNOPOpCode() has been replaced by a reference to V9::NOP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15279 91177308-0d34-0410-b5e6-96231b3b80d8

Convert many of the virtual TargetInstrInfo methods used as helper
functions in SparcV9InstrSelection and SparcV9PreSelection into regular
old global functions.  As it happens, none of them really have anything
to do with TargetInstrInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15278 91177308-0d34-0410-b5e6-96231b3b80d8

As it happens, none of these TargetInstrInfo methods which are only
used in the SparcV9 backend really have anything to do with
TargetInstrInfo, so we're converting them into regular old global
functions and moving their declarations to SparcV9InstrSelectionSupport.h.
(They're mostly used as helper functions for SparcV9InstrSelection.)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15277 91177308-0d34-0410-b5e6-96231b3b80d8

Make the create...() functions for some of these passes return a FunctionPass *.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15276 91177308-0d34-0410-b5e6-96231b3b80d8

Fixed saving/restoring LR unconditionally, only done as necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15275 91177308-0d34-0410-b5e6-96231b3b80d8

Save and restore LR just like any other register and ONLY if we actually modify
it (due to calls or globals access).  We now compile `void empty(){}' to `blr'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15274 91177308-0d34-0410-b5e6-96231b3b80d8

LR is a 32-bit int reg

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15273 91177308-0d34-0410-b5e6-96231b3b80d8

MovePCtoLR (which is `bl' in disguise) modifies LR implicitly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15272 91177308-0d34-0410-b5e6-96231b3b80d8

Register LR is callee-saved

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15271 91177308-0d34-0410-b5e6-96231b3b80d8

Add IMPLICIT_DEF of LR for branch-and-link instrs (calls and global accesses)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15270 91177308-0d34-0410-b5e6-96231b3b80d8

Ugh, the upgrade of zion brought in GCC 3.3.2, our arch nemesis.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15269 91177308-0d34-0410-b5e6-96231b3b80d8

Run DSE at link-time, and turn on an IP alias analysis by default in gccld!

The -disable-globalsmodref is temporary and will be removed eventually.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15268 91177308-0d34-0410-b5e6-96231b3b80d8

nuke pointless -debug output

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15267 91177308-0d34-0410-b5e6-96231b3b80d8

New functionality

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15266 91177308-0d34-0410-b5e6-96231b3b80d8

Document new syntax

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15265 91177308-0d34-0410-b5e6-96231b3b80d8

Fix conservative assumption, which was quite broken.  Also, notice that
functions known to not access memory (like sin/cos) don't access memory! :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15264 91177308-0d34-0410-b5e6-96231b3b80d8

Fix hoisting of void typed values, e.g. calls

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15263 91177308-0d34-0410-b5e6-96231b3b80d8

alloca void makes no sense

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15262 91177308-0d34-0410-b5e6-96231b3b80d8

Remove a bogus assertion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15261 91177308-0d34-0410-b5e6-96231b3b80d8

Complete rewrite of this pass to be faster, use less memory, be easier to
understand, and more accurate to boot!  This implements
GlobalModRef/purecse.ll over the previous impl.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15260 91177308-0d34-0410-b5e6-96231b3b80d8

new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15259 91177308-0d34-0410-b5e6-96231b3b80d8

Have some testcases

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15258 91177308-0d34-0410-b5e6-96231b3b80d8

Add a note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15257 91177308-0d34-0410-b5e6-96231b3b80d8

Fix out of date comment

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15256 91177308-0d34-0410-b5e6-96231b3b80d8

Simplify code and silence warning

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15255 91177308-0d34-0410-b5e6-96231b3b80d8

Use context-sensitive alias analysis to avoid pessimization in clients of
AliasSetTracker (dse and licm).  This implements
DeadStoreElimination/context-sensitive.llx

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15254 91177308-0d34-0410-b5e6-96231b3b80d8

New testcase.  DSE should delete all of the DEAD instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15253 91177308-0d34-0410-b5e6-96231b3b80d8

Make basicaa a bit more aggressive

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15252 91177308-0d34-0410-b5e6-96231b3b80d8

basic-aa can actually provide simple mod/ref info

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15251 91177308-0d34-0410-b5e6-96231b3b80d8

This was implemented back in march

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15250 91177308-0d34-0410-b5e6-96231b3b80d8