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7551 Commits

Author SHA1 Message Date
Chris Lattner
4ad25e432d Entirely eliminate all patterns and expanders from this file. We shall go 
with an incremental approach rather than a revolutionary approach.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15379 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:25:01 +00:00
Chris Lattner
bbe664c8fb Move the 'Expander' node to later in the file, with the other experimental 
stuff.  The pattern becomes a list, add some stuff, add some comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15378 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:23:34 +00:00
Chris Lattner
bb737edcc3 Remove obsolete file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15377 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-01 03:19:28 +00:00
Alkis Evlogimenos
f978a1db51 Make OptimizeBlock take a MachineFunction::iterator instead of a 
MachineBasicBlock* as a parameter so that nxext() and prior() helper
functions can work naturally on it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15376 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 19:24:41 +00:00
Chris Lattner
7f74340733 Next on a pointer increments the pointer, not an iterator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15375 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 18:40:36 +00:00
Alkis Evlogimenos
9fd332392c Use next() helper to make code more readable. Use 
MachineFunction::iterator instead of MachineBasicBlock* to avoid
dereferencing end iterators.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15373 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 15:14:29 +00:00
Alkis Evlogimenos
dd04583781 Use MachineFunction::iterator instead of a MachineBasicBlock* because 
FallThrough maybe == to MF.end().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15372 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 15:03:52 +00:00
Alkis Evlogimenos
31e155e610 Align breaks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15371 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 10:05:44 +00:00
Chris Lattner
1e5fdf8ba0 Expose this as a functionpass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15369 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 10:01:58 +00:00
Chris Lattner
21ab22e475 Implement a simple target-independent CFG cleanup pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15368 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 10:01:27 +00:00
Chris Lattner
167cf33e1d Add breaks 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15365 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:53:31 +00:00
Alkis Evlogimenos
6103c1703c Simplify code a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15364 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:44:32 +00:00
Alkis Evlogimenos
02a453074d Correctly spell 'unconditional'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15363 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:41:44 +00:00
Alkis Evlogimenos
36f506eddb Implement insertGoto and reverseBranchCondition for the X86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15362 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 09:38:47 +00:00
Chris Lattner
0f6eab32d0 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
 2004-07-31 02:24:37 +00:00
Chris Lattner
62cce39515 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
 2004-07-31 02:10:53 +00:00
Chris Lattner
2a809f6567 New flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15354 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-31 02:07:07 +00:00
Tanya Lattner
0a88d2d8b9 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
 2004-07-30 23:36:10 +00:00
Misha Brukman
88f8f9226f * 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
 2004-07-30 15:53:09 +00:00
Misha Brukman
a9c528f0aa 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
 2004-07-30 15:51:51 +00:00
Misha Brukman
4ffddc5228 * 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
 2004-07-30 15:50:45 +00:00
Misha Brukman
cb6267bc60 Fix De Morgan's name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15343 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-30 12:50:08 +00:00
Chris Lattner
acd1f0fcb3 Start using the PatternMatcher a bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15342 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-30 07:50:03 +00:00
Brian Gaeke
365f54c7bc 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
 2004-07-29 21:31:20 +00:00
Misha Brukman
78c038d0cc 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
 2004-07-29 17:30:57 +00:00
Misha Brukman
47b14a4a6a 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
 2004-07-29 17:30:56 +00:00
Chris Lattner
879313ae3a 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
 2004-07-29 17:23:00 +00:00
Chris Lattner
4ab78e0489 Header moved 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15332 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-29 17:15:38 +00:00
Chris Lattner
9670eecf33 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
 2004-07-29 17:11:37 +00:00
Misha Brukman
d8e1eea678 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
 2004-07-29 17:05:13 +00:00
Misha Brukman
44336292fc 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
 2004-07-29 16:53:53 +00:00
Alkis Evlogimenos
91366a8541 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
 2004-07-29 12:33:25 +00:00
Alkis Evlogimenos
eb62bc77b6 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
 2004-07-29 12:17:34 +00:00
Chris Lattner
730b1ad2c4 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
 2004-07-29 07:56:39 +00:00
Brian Gaeke
246b40ae7a 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
 2004-07-29 06:43:10 +00:00
Brian Gaeke
a308f80155 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
 2004-07-29 06:43:09 +00:00
Brian Gaeke
db7c40db10 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
 2004-07-29 06:43:08 +00:00
Brian Gaeke
fb8f856f14 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
 2004-07-29 06:43:06 +00:00
Brian Gaeke
988f5b530a 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
 2004-07-29 04:25:43 +00:00
Brian Gaeke
fc63adb1b9 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
 2004-07-29 04:15:36 +00:00
Chris Lattner
83660c5aed Minor corrections 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15309 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-28 20:18:53 +00:00
Brian Gaeke
b2f30a3792 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
 2004-07-28 19:24:48 +00:00
Misha Brukman
8b88d906a2 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
 2004-07-28 19:16:10 +00:00
Misha Brukman
a0af38c46a 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
 2004-07-28 19:13:49 +00:00
Misha Brukman
b7697a6dd2 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
 2004-07-28 19:13:07 +00:00
Misha Brukman
f63bc199c6 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
 2004-07-28 19:12:24 +00:00
Misha Brukman
8b29776d68 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
 2004-07-28 00:56:04 +00:00
Misha Brukman
b9b8ba58e7 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
 2004-07-28 00:55:12 +00:00
Misha Brukman
56d38c6ca1 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
 2004-07-28 00:01:41 +00:00
Misha Brukman
af313fb188 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
 2004-07-28 00:00:48 +00:00
Misha Brukman
8c02c1cbb8 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
 2004-07-27 23:29:16 +00:00
Brian Gaeke
de0ceb58ba 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
 2004-07-27 21:43:38 +00:00
Brian Gaeke
a770e0041b 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
 2004-07-27 21:11:20 +00:00
Robert Bocchino
71698285e8 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
 2004-07-27 21:02:21 +00:00
Brian Gaeke
eb6c29bbfd 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
 2004-07-27 19:37:37 +00:00
Misha Brukman
4ce5ce25e8 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
 2004-07-27 18:43:04 +00:00
Misha Brukman
ab96790f2c 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
 2004-07-27 18:40:39 +00:00
Misha Brukman
bd2c870539 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
 2004-07-27 18:39:34 +00:00
Misha Brukman
596c23134b Remove empty unused method processFunctionBeforeFrameFinalized() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15284 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:38:40 +00:00
Misha Brukman
f228fa0580 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
 2004-07-27 18:35:54 +00:00
Misha Brukman
fa20a6dfd7 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
 2004-07-27 18:35:23 +00:00
Misha Brukman
8aebe9f96c 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
 2004-07-27 18:34:11 +00:00
Misha Brukman
999d9cfde5 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
 2004-07-27 18:33:06 +00:00
Brian Gaeke
c998981505 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
 2004-07-27 17:43:24 +00:00
Brian Gaeke
a376ee2d13 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
 2004-07-27 17:43:23 +00:00
Brian Gaeke
1b4aeb5cec 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
 2004-07-27 17:43:22 +00:00
Brian Gaeke
96d4bf7aee 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
 2004-07-27 17:43:21 +00:00
Misha Brukman
c91bc30436 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
 2004-07-27 17:17:48 +00:00
Misha Brukman
9a771d55fe 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
 2004-07-27 17:17:18 +00:00
Misha Brukman
e862f306fb LR is a 32-bit int reg 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15273 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:15:32 +00:00
Misha Brukman
53f567817c 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
 2004-07-27 17:15:05 +00:00
Misha Brukman
08cc7b30bb Register LR is callee-saved 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15271 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:14:34 +00:00
Misha Brukman
435c785803 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
 2004-07-27 17:13:58 +00:00
Chris Lattner
b0015c510f nuke pointless -debug output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15267 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 08:03:18 +00:00
Chris Lattner
105d26acb4 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
 2004-07-27 07:46:26 +00:00
Chris Lattner
eaa243039b 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
 2004-07-27 07:38:32 +00:00
Chris Lattner
70c7d03d1c alloca void makes no sense 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15262 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 07:30:02 +00:00
Chris Lattner
63e9930498 Remove a bogus assertion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15261 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 07:22:21 +00:00
Chris Lattner
fe98f27e80 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
 2004-07-27 06:40:37 +00:00
Chris Lattner
bcb11cf132 Simplify code and silence warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15255 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 02:34:49 +00:00
Chris Lattner
efe30ef790 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
 2004-07-27 02:20:26 +00:00
Chris Lattner
db5b80a7f2 Make basicaa a bit more aggressive 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15252 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 02:18:52 +00:00
Chris Lattner
e181b94309 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
 2004-07-27 02:13:55 +00:00
Chris Lattner
05e47987ee This was implemented back in march 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15250 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 01:59:42 +00:00
Misha Brukman
ab640a5728 Do not store the stack pointer if the stack size is 0. 
Also, convert C-style comments to C++ and make sure code wraps at 80 cols.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15245 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 22:00:26 +00:00
Misha Brukman
3ada3e3f82 ADDI can take several forms, including: 
addi r1, r2, 0
  addi r1, <frame index #n>, 0

so we must check for the second parameter being a register for this instruction
to be considered a reg-to-reg copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15244 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:50:38 +00:00
Misha Brukman
8790d47453 assert() on MachineInstr properties instead of checking them dynamically 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15243 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:35:58 +00:00
Misha Brukman
774a297c83 * Recognize `addi r1, r2, 0' a move instruction 
* List formats of instructions currently recognized as moves


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15242 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:29:00 +00:00
Misha Brukman
8606aea117 Fix indentation: should be 2 spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15240 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:48:58 +00:00
Misha Brukman
91b5ca838a Fix file header as it has been renamed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15239 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:45:48 +00:00
Misha Brukman
c6d398abbb Renamed files to have the `X86' prefix for uniqueness purposes. 
All CVS history was renamed, the *,v were copied over.  No worries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15238 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:43:11 +00:00
Misha Brukman
b097f216b0 * Rewrote casts 
* Implemented GEP folding
* Dynamically output global address stuff once per function
* Fix casting fp<->short/byte

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15237 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:13:24 +00:00
Misha Brukman
cf8d244394 Increment the label number in runOnFunction() rather than while printing out 
some instruction.  Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15236 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:28:33 +00:00
Misha Brukman
bb966a4a59 More notes on bugs, unimplemented features, and suggested code improvements. 
Written by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15235 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:23:55 +00:00
Misha Brukman
3c616b45e7 Fix subtracting values > 2^15 in the prologue/epilogue, by Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15234 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:22:52 +00:00
Chris Lattner
a000279a7d Implement DeadStoreElim/alloca.llx by observing that allocas are dead at the 
end of the function (either return or unwind)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15232 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 06:14:11 +00:00
Chris Lattner
61d462760b Add some new methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15230 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 05:50:23 +00:00
Chris Lattner
595ee7ec26 Throttle back indvar substitution from creating multiplies in loops. This is bad bad bad. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15227 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 02:47:12 +00:00
Chris Lattner
8d65a06a3e Fix bug in previous patch :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15226 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 01:40:20 +00:00
Chris Lattner
badf091b47 Fix an extremely serious regression that was causing LLVM basic blocks to be 
scrambled around almost at random, having really bad effects on icache locality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15225 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 01:22:59 +00:00
Chris Lattner
1d78516c65 Fix a serious bug in the double constant reader. In particular, because 
(At[3] << 24) is an int type and it is being coerced to uint64_t, it was
getting sign extended, causing us to get FFFFFFFFxxxxxxxx constants all of
the time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15224 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 23:15:44 +00:00
Chris Lattner
a9d790c831 Temporarily disable this code, as it is emitting LLVM_NAN("nan") which results in a call to the 
glibc 'nan' function because the initializer is not a string.  This breaks when used in a global
initializer.  Try compiling this testcase for example:

%X = global float <some nan value>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15223 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 22:36:35 +00:00
Reid Spencer
cddc86f27c Avoid use of size(), which counts, in favor of other mechanisms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15221 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:44:54 +00:00
Reid Spencer
ada1618afa Always write FP values correctly. 
Adjust for new Module.h interface for dependent libraries.
Excise unused backwards compatibility flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15220 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:36:26 +00:00
Reid Spencer
7d146e1107 Don't create a backwards compatibility flag for something that was a 
regression bug introduced in release 1.2


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15219 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:32:51 +00:00
Reid Spencer
5ac8812c54 Adjust to new Module.h interface for dependent libraries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15218 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:32:02 +00:00
Reid Spencer
feaf10e571 Adjust to new Module.h interface for dependent libraries 
Remove mem leaks resulting from not freeing parse strings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15217 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:30:51 +00:00
Reid Spencer
c9a1f0dcdd Adjust to new Module.h interface for dependent libraries 
Only write the target triple and deplibs if they are non-empty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15216 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 21:29:43 +00:00
Chris Lattner
34a1005737 Fix a latent bug in the AliasSetTracker that was exposed by the FreeInst additions and broke a bunch of programs last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15214 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 18:32:01 +00:00
Reid Spencer
801db47373 bug 263: 
Ensure the list of libraries is cleared.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15212 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 18:08:57 +00:00
Reid Spencer
83f6a77c8f bug 263: 
Add ability to write target triple and dependent libraries information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15211 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 18:08:18 +00:00
Reid Spencer
ad89bd6a1a bug 263: 
- encode/decode target triple and dependent libraries
bug 401:
- fix encoding/decoding of FP values to be little-endian only
bug 402:
- initial (compatible) cut at 24-bit types instead of 32-bit
- reduce size of block headers by 50%
Other:
- cleanup Writer by consolidating to one compilation unit, rem. other files
- use a std::vector instead of std::deque so the buffer can be allocated
  in multiples of 64KByte chunks rather than in multiples of some smaller
  (default) number.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15210 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 18:07:36 +00:00
Reid Spencer
0be13e7f14 bug 263: 
Provide parsing for the target triple and dependent libraries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15209 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 17:58:28 +00:00
Reid Spencer
3cd2fe3d2f bug 263: 
Provide new tokens for target triples and dependent libraries.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15208 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 17:56:00 +00:00
Chris Lattner
70e9b59b0e * Substantially simplify how free instructions are handled (potentially fixing 
a bug in DSE).
* Delete dead operand uses iteratively instead of recursively, using a
  SetVector.
* Defer deletion of dead operand uses until the end of processing, which means
  we don't have to bother with updating the AliasSetTracker.  This speeds up
  DSE substantially.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15204 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 11:09:56 +00:00
Alkis Evlogimenos
5a0a1c2cba Add some comments to the backtracking code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15200 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 08:10:33 +00:00
Chris Lattner
a9e2f3d0ab Free instructions kill values too. This implements DeadStoreElim/free.llx 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15199 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:58:38 +00:00
Chris Lattner
5c88260f70 Add support for free instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15197 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:57:37 +00:00
Chris Lattner
c25b55a5b2 Fix the sense of joinable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15196 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:47:25 +00:00
Chris Lattner
d67e439241 Remove linux/solaris specific stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15195 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:34:00 +00:00
Chris Lattner
f542649f1b This patch makes use of the infrastructure implemented before to safely and 
aggressively coallesce live ranges even if they overlap.  Consider this LLVM
code for example:

int %test(int %X) {
        %Y = mul int %X, 1      ;; Codegens to Y = X
        %Z = add int %X, %Y
        ret int %Z
}

The mul is just there to get a copy into the code stream.  This produces
this machine code:

 (0x869e5a8, LLVM BB @0x869b9a0):
        %reg1024 = mov <fi#-2>, 1, %NOREG, 0    ;; "X"
        %reg1025 = mov %reg1024                 ;; "Y"  (subsumed by X)
        %reg1026 = add %reg1024, %reg1025
        %EAX = mov %reg1026
        ret

Note that the life times of reg1024 and reg1025 overlap, even though they
contain the same value.  This results in this machine code:

test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, %EAX
        add %EAX, %ECX
        ret

Another, worse case involves loops and PHI nodes.  Consider this trivial loop:
testcase:

int %test2(int %X) {
entry:
        br label %Loop
Loop:
        %Y = phi int [%X, %entry], [%Z, %Loop]
        %Z = add int %Y, 1
        %cond = seteq int %Z, 100
        br bool %cond, label %Out, label %Loop
Out:
        ret int %Z
}

Because of interactions between the PHI elimination pass and the register
allocator, this got compiled to this code:

test2:
        mov %ECX, DWORD PTR [%ESP + 4]
.LBBtest2_1:
***     mov %EAX, %ECX
        inc %EAX
        cmp %EAX, 100
***     mov %ECX, %EAX
        jne .LBBtest2_1

        ret

Or on powerpc, this code:

_test2:
        mflr r0
        stw r0, 8(r1)
        stwu r1, -60(r1)
.LBB_test2_1:
        addi r2, r3, 1
        cmpwi cr0, r2, 100
***     or r3, r2, r2
        bne cr0, .LBB_test2_1

***     or r3, r2, r2
        lwz r0, 68(r1)
        mtlr r0
        addi r1, r1, 60
        blr 0



With this improvement in place, we now generate this code for these two
testcases, which is what we want:


test:
        mov %EAX, DWORD PTR [%ESP + 4]
        add %EAX, %EAX
        ret

test2:
        mov %EAX, DWORD PTR [%ESP + 4]
.LBBtest2_1:
        inc %EAX
        cmp %EAX, 100
        jne .LBBtest2_1 # Loop
        ret

Or on PPC:

_test2:
        mflr r0
        stw r0, 8(r1)
        stwu r1, -60(r1)
.LBB_test2_1:
        addi r3, r3, 1
        cmpwi cr0, r3, 100
        bne cr0, .LBB_test2_1

        lwz r0, 68(r1)
        mtlr r0
        addi r1, r1, 60
        blr 0


Static numbers for spill code loads/stores/reg-reg copies (smaller is better):

em3d:       before: 47/25/26         after: 44/22/24
164.gzip:   before: 433/245/310      after: 403/231/278
175.vpr:    before: 3721/2189/1581   after: 4144/2081/1423
176.gcc:    before: 26195/8866/9235  after: 25942/8082/8275
186.crafty: before: 4295/2587/3079   after: 4119/2519/2916
252.eon:    before: 12754/7585/5803  after: 12508/7425/5643
256.bzip2:  before: 463/226/315      after: 482:241/309


Runtime perf number samples on X86:

gzip: before: 41.09 after: 39.86
bzip2: runtime: before: 56.71s after: 57.07s
gcc: before: 6.16 after: 6.12
eon: before: 2.03s after: 2.00s


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15194 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 07:11:19 +00:00
Chris Lattner
d3a205eab5 Make a method const, no functionality changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15193 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 06:23:01 +00:00
Chris Lattner
1d6dc97463 I think that V8 should coallesce registers, don't you? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15192 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 06:19:04 +00:00
Alkis Evlogimenos
89756ea109 Use name.empty() instead of testing against equality with the empty 
string.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15191 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 06:16:52 +00:00
Alkis Evlogimenos
83949fcf7c Disallow creation of named values of type void. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15190 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 06:07:15 +00:00
Chris Lattner
62d4e16a05 Fix a bug where we incorrectly value numbered the first PHI definition the 
same as the PHI use.  This is not correct as the PHI use value is different
depending on which branch is taken.  This fixes espresso with aggressive
coallescing, and perhaps others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15189 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 05:45:18 +00:00
Chris Lattner
6925a9f9cc Fix a bug in the range remover 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15188 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 05:43:53 +00:00
Chris Lattner
c83e40d1b6 Add debugging output for joining assignments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15187 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-25 03:24:11 +00:00
Alkis Evlogimenos
3f86193cd2 Remove implementation of operator= and make it private so that it is 
not used accidentally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15172 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 18:55:15 +00:00
Alkis Evlogimenos
a1613db62f Change std::map<unsigned, LiveInterval*> into a std::map<unsigned, 
LiveInterval>. This saves some space and removes the pointer
indirection caused by following the pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15167 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 11:44:15 +00:00
Chris Lattner
c47b6677ae obvious fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15162 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 07:51:27 +00:00
Chris Lattner
21ddf17ff6 Get rid of the printout from the low-level system interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15161 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 07:50:48 +00:00
Chris Lattner
e96b2ed211 Pass timeouts into the low level "execute program with timeout" function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15160 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 07:49:11 +00:00
Chris Lattner
de0213b9f5 Add support for killing the program if it executes for too long. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15158 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 07:41:31 +00:00
Chris Lattner
060913cce4 whoops, didn't mean to remove this 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15157 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 04:32:22 +00:00
Chris Lattner
deb9971061 In the joiner, merge the small interval into the large interval. This restores 
us back to taking about 10.5s on gcc, instead of taking 15.6s!  The net result
is that my big patches have hand no significant effect on compile time or code
quality.  heh.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15156 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 03:41:50 +00:00
Chris Lattner
4df98e546d Completely eliminate the intervals_ list. instead, the r2iMap_ maintains 
ownership of the intervals.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15155 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 03:32:06 +00:00
Chris Lattner
7ac2d3146a Big change to compute logical value numbers for each LiveRange added to an 
Interval.  This generalizes the isDefinedOnce mechanism that we used before
to help us coallesce ranges that overlap.  As part of this, every logical
range with a different value is assigned a different number in the interval.
For example, for code that looks like this:

0  X = ...
4  X += ...
  ...
N    = X

We now generate a live interval that contains two ranges: [2,6:0),[6,?:1)
reflecting the fact that there are two different values in the range at
different positions in the code.

Currently we are not using this information at all, so this just slows down
liveintervals.  In the future, this will change.

Note that this change also substantially refactors the joinIntervalsInMachineBB
method to merge the cases for virt-virt and phys-virt joining into a single
case, adds comments, and makes the code a bit easier to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15154 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 02:59:07 +00:00
Chris Lattner
0f4c076140 Add a new differingRegisterClasses method 
make overlapsAliases take pointers instead of references
fix indentation


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15153 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 02:53:43 +00:00
Chris Lattner
abf295fc6c Little stuff: 
* Fix comment typeo
* add dump() methods
* add a few new methods like getLiveRangeContaining, removeRange & joinable
  (which is currently the same as overlaps)
* Remove the unused operator==

Bigger change:

* In LiveInterval, instead of using a boolean isDefinedOnce to keep track of
  if there are > 1 definitions in a particular interval, keep a counter,
  NumValues to keep track of exactly how many there are.
* In LiveRange, add a new ValId element to indicate which of the numbered
  values each LiveRange belongs to.   We now no longer merge LiveRanges if
  they are of differing value ID's even if they are neighbors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15152 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-24 02:52:23 +00:00
Misha Brukman
1be339ac4c Running list of bugs, unimplemented features, currently broken tests, until we 
have a nightly tester set up for PowerPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15147 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 22:37:22 +00:00
Misha Brukman
4722544855 Eliminate spurious empty space; make code easier to page through. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15146 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 22:35:49 +00:00
Misha Brukman
1245c35935 Simplify boolean test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15145 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 21:43:26 +00:00
Chris Lattner
f35fef7060 More minor changes: 
* Inline some functions
 * Eliminate some comparisons from the release build

This is good for another .3 on gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15144 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 21:24:19 +00:00
Misha Brukman
b160d1f9f7 Implement casting a floating point to 32-bit unsigned value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15143 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 20:32:59 +00:00
Chris Lattner
b26c215c05 Change addRange and join to be a little bit smarter. In particular, we don't 
want to insert a new range into the middle of the vector, then delete ranges
one at a time next to the inserted one as they are merged.

Instead, if the inserted interval overlaps, just start merging.  The only time
we insert into the middle of the vector is when we don't overlap at all.  Also
delete blocks of live ranges if we overlap with many of them.

This patch speeds up joining by .7 seconds on a large testcase, but more
importantly gets all of the range adding code into addRangeFrom.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15141 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 19:38:44 +00:00
Brian Gaeke
7ff4006f82 Fix problem with inserting FunctionPasses that depend on ImmutablePasses 
(e.g., LICM) into FunctionPassManagers. The problem is that we were
using a C-style cast to cast required analysis passes to PassClass*, but
if it's a FunctionPassManager, and the required analysis pass is an
ImmutablePass, the types aren't really compatible, so the C-style cast
causes a crash.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15140 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 19:35:50 +00:00
Chris Lattner
aa14147cd6 Search by the start point, not by the whole interval. This saves some 
comparisons, reducing linscan by another .1 seconds :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15139 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 18:40:00 +00:00
Chris Lattner
e6ad392802 New helper method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15138 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 18:39:12 +00:00
Chris Lattner
4dc54ae0d9 Speedup debug builds a bit 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15137 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 18:38:52 +00:00
Chris Lattner
ebd7e6c54d Instead of searching for a live interval pair, search for a location. This gives 
a very modest speedup of .3 seconds compiling 176.gcc (out of 20s).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15136 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 18:13:24 +00:00
Chris Lattner
a3b8b5c0e0 Rename LiveIntervals.(cpp|h) -> LiveIntervalAnalysis.(cpp|h) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15135 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 17:56:30 +00:00
Chris Lattner
fb449b9ea5 Pull the LiveRange and LiveInterval classes out of LiveIntervals.h (which 
will soon be renamed) into their own file.  The new file should not emit
DEBUG output or have other side effects.  The LiveInterval class also now
doesn't know whether its working on registers or some other thing.

In the future we will want to use the LiveInterval class and friends to do
stack packing.  In addition to a code simplification, this will allow us to
do it more easily.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15134 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 17:49:16 +00:00
Misha Brukman
e2eceb5c73 * Codegen of GEPs dramatically improved by folding multiplies and adds 
* Function pointers implemented correctly using appropriate stubs

Contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15133 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 16:08:20 +00:00
Chris Lattner
ec2bc64505 Improve comments a bit 
Use an explicit LiveRange class to represent ranges instead of an std::pair.
This is a minor cleanup, but is really intended to make a future patch simpler
and less invasive.

Alkis, could you please take a look at LiveInterval::liveAt?  I suspect that
you can add an operator<(unsigned) to LiveRange, allowing us to speed up the
upper_bound call by quite a bit (this would also apply to other callers of
upper/lower_bound).  I would do it myself, but I still don't understand that
crazy liveAt function, despite the comment. :)

Basically I would like to see this:
    LiveRange dummy(index, index+1);
    Ranges::const_iterator r = std::upper_bound(ranges.begin(),
                                                ranges.end(),
                                                dummy);

Turn into:
    Ranges::const_iterator r = std::upper_bound(ranges.begin(),
                                                ranges.end(),
                                                index);


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15130 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 08:24:23 +00:00
Chris Lattner
94881e8c45 Update live intervals more accurately for PHI elim. This slightly reduces 
the live intervals for some registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15125 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 05:27:43 +00:00
Chris Lattner
fe1630b43e Force coallescing of live ranges that have a single definition, even if they 
interfere.  Because these intervals have a single definition, and one of them
is a copy instruction, they are always safe to merge even if their lifetimes
interfere.  This slightly reduces the amount of spill code, for example on
252.eon, from:

 12837 spiller               - Number of loads added
  7604 spiller               - Number of stores added
  5842 spiller               - Number of register spills
 18155 liveintervals         - Number of identity moves eliminated after coalescing

to:

  12754 spiller               - Number of loads added
   7585 spiller               - Number of stores added
   5803 spiller               - Number of register spills
  18262 liveintervals         - Number of identity moves eliminated after coalescing

The much much bigger win would be to merge intervals with multiple definitions
(aka phi nodes) but this is not that day.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15124 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 05:26:05 +00:00
Misha Brukman
9accb24c89 Bool alignment on MacOSX/PowerPC is 4 bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15122 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 01:11:46 +00:00
Misha Brukman
4c14f33844 * Change class of BoolTy back to cInt 
* Fix indentation back to 2 spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15121 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 01:11:19 +00:00
Misha Brukman
c8e8764705 * Add BoolAlignment to TargetData, default is 1 byte, size 1 byte 
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15120 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 01:09:52 +00:00
Chris Lattner
a7bfbba856 costmetic changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15118 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 23:05:12 +00:00
Chris Lattner
e8850f476e Fix broken -debug printing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15115 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 21:54:22 +00:00
Chris Lattner
4951d48a16 The default has not been 'simple' for AGES! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15114 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 21:46:02 +00:00
Chris Lattner
cc46c4fcee Remove some (LARGE) abandoned code for the release. If this is ever needed 
again in the future, it can be resurrected out of CVS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15112 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 21:30:35 +00:00
Chris Lattner
0bafa9818b Make linear scan the default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15111 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 18:42:00 +00:00
Misha Brukman
2ed17cadb4 * Change bool from cInt to cByte (for now) 
* Don't allow negative immediates to users of unsigned immediates
* Fix long compares
* Support <const int>, op as a potential immediate candidate
* Fix sign extension of short and byte loads
* Fix and improve integer casts
* Fix passing of doubles as vararg functions

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15109 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 15:58:04 +00:00
Alkis Evlogimenos
77c4c4da24 Put variable name to a separate line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15108 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 15:30:33 +00:00
Misha Brukman
75fa4e4f99 Fix indentation and wrap code at 80 cols 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15107 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 15:26:23 +00:00
Alkis Evlogimenos
d3014edc51 Sorting is now handled by both linearscan and iterative scan so live 
intervals need not be sorted anymore. Removing this redundant step
improves LiveIntervals running time by 5% on 176.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15106 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 15:18:10 +00:00
Alkis Evlogimenos
82c24fba8a Fit to 80 columns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15105 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 14:29:31 +00:00
Alkis Evlogimenos
53eb37340c Some compile time improvements resulting in a 1sec speedup in the 5sec 
compilation of gcc:

* Use vectors instead of lists for the intervals sets
* Use a heap for the unhandled set to keep intervals always sorted and
  makes insertions back to the heap very fast (compared to scanning a
  list)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15103 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 08:14:44 +00:00
Chris Lattner
0fb56afab1 This is a trivial dead store elimination pass. It very very simple and 
can be improved in many ways.  But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15101 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 08:00:28 +00:00
Chris Lattner
b8a31ace2c Clean up reference counting to stop "leaking" alias sets 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15099 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 07:58:18 +00:00
Chris Lattner
199edde707 Remove extraneous punctuation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15098 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 05:51:56 +00:00
Chris Lattner
93c9587fbb Update GC intrinsics to take a pointer to the object as well as a pointer 
to the field being updated.  Patch contributed by Tobias Nurmiranta


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15097 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 05:51:13 +00:00
Chris Lattner
9545a1797b Updates to gc intrinsics, contributed by Tobias Nurmiranta 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15096 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 05:50:01 +00:00
Alkis Evlogimenos
10e169b038 Use reverse iterators when updating the vector, since scanning from 
the end will reduce erase() runtimes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15093 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 02:16:53 +00:00
Chris Lattner
6beef3e1a0 That funny 2-address lowering pass can also cause multiple definitions, 
fortunately, they are easy to handle if we know about them.  This patch fixes
some serious pessimization of code produced by the linscan register allocator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15092 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 00:04:14 +00:00
Chris Lattner
1e31363a9e Minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15091 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 23:17:57 +00:00
Chris Lattner
3dbb504081 Fix cases where we generated horrible code like this: 
mov %EDI, 12
        add %EDI, %ECX
        mov %ECX, 12
        add %ECX, %EDX
        mov %EDX, 12
        add %EDX, %ESI

instead (really!) generate this:

        add %ECX, 12
        add %EDX, 12
        add %ESI, 12


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15090 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 21:28:26 +00:00
Brian Gaeke
7848e68c16 These files don't need to include <iostream> since they include "Support/Debug.h". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15089 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:50:33 +00:00
Misha Brukman
a31f1f7cb2 * Add the lost fix to define the second reg of a 2-reg representation of longs 
* Fix opcode RLWNM -> RLWINM since it uses an immediate const shift value


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15087 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:30:18 +00:00
Misha Brukman
17a9000ac8 * Speed up canUseAsImmediateForOpcode() by comparing Operand before 
dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15086 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:22:06 +00:00
Chris Lattner
f0cacc0ae7 * Further cleanup. 
* Test for whether bits are shifted out during the optzn.

If so, the fold is illegal, though it can be handled explicitly for setne/seteq

This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15085 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:14:10 +00:00
Misha Brukman
97a296f743 * Fix printing of signed immediate values (Nate Begeman) 
* Fix printing of `zeroinitializer'
* Fix printing of `linkonce' globals, complete with stubs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15084 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:11:11 +00:00
Misha Brukman
1013ef5228 * Fix printing of signed immediate values 
* Generation of opcodes that take 16 bit immediates
* Rewrote multiply to be correct for 64 bit values
* Rewrote all the long handling to be correct for PowerPC
* Fix visitSelectInst() to define the upper register of the pair of regs
  representing a long value

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15083 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:09:08 +00:00
Chris Lattner
5eb919405c Make cast-cast code a bit more defensive 
"simplify" a bit of code for comparison/and folding


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15082 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 19:50:44 +00:00
Misha Brukman
e0380e0c42 Use addSImm() instead of addImm() for stack offsets, which may be negative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15081 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 19:36:57 +00:00
Alkis Evlogimenos
d03451ef47 Fix analysis name. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15078 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 17:23:44 +00:00
Misha Brukman
53d9a48855 Add SUBI instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15077 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 15:53:04 +00:00
Alkis Evlogimenos
fc29e63afe Clear spilled list at once. Remove unused vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15073 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 12:00:10 +00:00
Alkis Evlogimenos
2d54705c4b Change std::list into a std::vector for IntervalSets. This reduces 
compile time for 176.gcc from 5.6 secs to 4.7 secs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15072 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 09:46:55 +00:00
Alkis Evlogimenos
3b1af0b3fc Improve file comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15069 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 08:28:39 +00:00
Alkis Evlogimenos
910d0d6066 Add Iterative scan register allocator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15068 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 08:24:35 +00:00
Alkis Evlogimenos
c8dec2c23e Linearscan is no longer experimental. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15067 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 08:18:50 +00:00
Chris Lattner
6d4b0d723d Add capability to remove aliasing aliassets from an AST 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15066 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 07:04:26 +00:00
Chris Lattner
12c1155403 Make the AST interface a bit richer by returning whether an insertion caused 
an insertion or not (because the pointer set already existed).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15064 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 05:18:04 +00:00
Chris Lattner
e8a7e593e6 Remove special casing of pointers and treat them generically as integers of 
the appopriate size.  This gives us the ability to eliminate int -> ptr -> int


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15063 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 04:27:24 +00:00
Chris Lattner
bb8f43c8fc Do not ignore casts unless they are pointer-pointer casts. This caused us 
to miscompile the SingleSource/Regression/C++/pointer_member.cpp program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15062 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 03:56:54 +00:00
Brian Gaeke
0d3ac4cc30 Solaris hack for isinf() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15058 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 03:32:51 +00:00
Brian Gaeke
043c0bb0d9 Emit NaNs and INFs bit-identically to the bytecode file, if the system has 
printf("%a") support.
Patch contributed by Bill Wendling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15056 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 03:15:26 +00:00
Brian Gaeke
418f73cbaa Add platform-independent wrapper function for isinf(). 
Patch contributed by Bill Wendling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15050 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 03:13:50 +00:00
Misha Brukman
cd2273f4a7 Shorts are aligned to 2 bytes, bools to 1 byte (in structs). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15048 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 20:59:57 +00:00
Misha Brukman
bf417a6d46 Treat external variables similarly to those with weak linkage: load indirect. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15047 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 20:43:05 +00:00
Misha Brukman
86ddcf9d4f Differentiate between global and weak symbol loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15037 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:52:25 +00:00
Misha Brukman
ec6319a00c * Differentiate between global and weak symbol loads 
* Fix functions that take more than 32 bytes of args
* Alignment of doubles in structs is 4 bytes, not 8
* Fix passing long args: rN = hi, rN+1 = lo
* Rewrite signed divide
* Rewrite Intrinsic::returnaddress

Patch courtesy of Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15036 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:51:37 +00:00
Misha Brukman
e48178e8a6 Differentiate between global and weak symbol loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15035 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:45:27 +00:00
Misha Brukman
5c4544160f Double alignment in structs is 4 bytes, not 8. Patch by Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15034 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:43:25 +00:00
Alkis Evlogimenos
a39fc0efcf Add function to clear all virtual->physical mappings but not assigned 
stack slots. This is in preparation for the iterative linear scan.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15032 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 13:28:17 +00:00
Alkis Evlogimenos
6bd23c0832 Remove unneeded functor. LiveInterval has a < operator. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15031 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 10:20:03 +00:00
Chris Lattner
adfd32f8ee Fix a serious code pessimization problem. If an inlined function has a single 
return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15030 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 05:45:24 +00:00
Chris Lattner
59a20773f8 Implement Transforms/InstCombine/IntPtrCast.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15029 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 05:21:00 +00:00
Chris Lattner
9ce300013d Ignore instructions that are in trivially dead functions. This allows us 
to constify 14 globals instead of 4 in a trivial C++ testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15027 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 03:58:07 +00:00
Misha Brukman
d43b9fd1ae Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15026 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 02:23:09 +00:00
Chris Lattner
67769e5efa Implement InstCombine/GEPIdxCanon.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15024 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 01:48:15 +00:00
Chris Lattner
af17b1df84 Implement SimplifyCFG/BrUnwind.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15022 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 01:17:38 +00:00
Misha Brukman
ba1c1da36a Move handing of GlobalValues from getReg() to copyConstantToRegister(), this 
will avoid extra register-to-register copies.  Thanks to Chris for the idea.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15019 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:59:38 +00:00
Chris Lattner
bee7e7644b Rewrite cast->cast elimination code completely based on the information we 
actually care about.  Someday when the cast instruction is gone, we can do
better here, but this will do for now.  This implements
instcombine/cast.ll:test17/18 as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15018 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:59:32 +00:00
Misha Brukman
61114619bc * Fn args passed in registers are now recorded as used by the call instruction 
`-> asm printer updated to not print out those registers with the call instr

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15015 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:42:19 +00:00
Misha Brukman
7e898c3e04 * cFP class split into cFP32 and cFP64 
* Fn args passed in registers are now recorded as used by the call instruction
`-> asm printer updated to not print out those registers with the call instr
* Stack frame layout in prolog/epilog fixed, spills and vararg fns now work
* float/double to signed int codegen now correct
* various single precision float codegen bugs fixed
* const integer multiply codegen fixed
* select and setcc blocks inserted into the correct place in machine CFG
* load of integer constant code optimized

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15014 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:41:46 +00:00
Chris Lattner
4771288fe3 While I'm at it, don't break codegen of mul by 3,5,9. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15013 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 23:50:57 +00:00
Chris Lattner
596b97f1ab Generate better code for multiplies by negative constants like -4, -1, -9, etc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15012 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 23:47:21 +00:00
Alkis Evlogimenos
da77c44c2c Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15011 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 23:35:55 +00:00
Chris Lattner
8640f4e666 Fix a bug that occurs when the last instruction in a range is dead 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15005 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 15:16:53 +00:00
Chris Lattner
cc0d156f7b When joining intervals, join intervals in deeply nested loops first. This 
is a simple change, but seems to improve code a little.  For example, on
256.bzip2, we went from 75.0s -> 73.33s (2% speedup).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15004 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 14:40:29 +00:00
Chris Lattner
1c5c0444f1 Split joinIntervals into two methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15003 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 14:08:10 +00:00
Reid Spencer
2a4cb68ea6 bug 122: 
Simplify a conditional operator for a constant result from
GV->isNullValue()


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15001 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 13:25:02 +00:00
Chris Lattner
f4fc36e738 Inline 4 methods 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15000 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 07:52:35 +00:00
Chris Lattner
74de8b1b26 There is no need to store the MBB along with the MI any more, we can now 
ask instructions for their parent.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14998 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 07:04:55 +00:00
Chris Lattner
472405e0dc Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14997 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 06:55:21 +00:00
Chris Lattner
73d4adfb1e Remove the DefBlock element of VarInfo. DefBlock is always DefInst->getParent() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14996 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 06:26:50 +00:00
Chris Lattner
e312e156c3 Err, fix last checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14995 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 06:03:51 +00:00
Chris Lattner
5fbf29ce53 Fix bugpoint miscompilation support on OS/X 
Patch contributed by the fabulous Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14994 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 06:00:17 +00:00
Chris Lattner
8ea13c6233 Two changes, both very significant: 
* vreg <-> vreg joining now works, enable it unconditionally when joining
  is enabled (which is the default).
* Fix a serious pessimization of spill code where we were saying that a
  spilled DEF operand was live into the subsequent instruction.  This allows
  for substantially better code when spilling starts to happen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14993 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 05:55:50 +00:00
Chris Lattner
57eb15e316 See comments. The live intervals were not coming out of the spiller in sorted 
order, causing the inactive list in the linearscan list to get unsorted, which
basically fuxored everything up severely.

These seems to fix the joiner, so with more testing I will enable it by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14992 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 05:15:10 +00:00
Chris Lattner
331cb7dde1 Fix assertion to not dereference end! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14991 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 05:02:09 +00:00
Chris Lattner
59073e02cc Add some asserts that the list of intervals returned by addIntervalsForSpills 
is sorted.  This is not the case currently, which is causing no end of
problems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14990 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 04:47:36 +00:00
Chris Lattner
6097d13b2a remove the mbbi2mbbMap_, which was just keeping track of mbb order anyway. 
Heavily refactor handleVirtualRegisterDef, adding comments and making it more
efficient.  It is also much easier to follow and convince ones self that it is
correct :)

Add -debug output to the joine, showing the result of joining the intervals.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14989 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 02:15:56 +00:00
Chris Lattner
6b92906010 fill comment to 80 cols 
remove map that is not needed


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14988 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 02:13:59 +00:00
Chris Lattner
ab4c19ec3e classof implementations are now inlined 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14987 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 00:59:10 +00:00
Chris Lattner
f8083b7f20 Method now returns null, dtor is inlined 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14983 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-19 00:55:35 +00:00
Reid Spencer
12e7b11a63 A description of what this library is about, reference to the documentation 
and a list of don'ts for the library. All so future maintainers don't
break the important contract this library has with its user: LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14979 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 22:33:08 +00:00
Reid Spencer
98b5a34c81 Initiali Makefile for this library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14977 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 22:31:28 +00:00
Chris Lattner
f98cfc716d Add a workaround for a GCC 3.3.2 bug 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14976 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 21:56:20 +00:00
Chris Lattner
8919cccc3d Fix a performance regression from the CPR patch, simplify code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14974 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 21:34:16 +00:00
Chris Lattner
96940cb522 Strip out and simplify some code. This also fixes the regression last 
night compiling cfrac.  It did not realize that code like this:

int G; int *H = &G;

takes the address of G.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14973 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 19:56:20 +00:00
Chris Lattner
9db07b9307 Minor cleanup, no functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14972 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 18:59:44 +00:00
Chris Lattner
a51e4f6301 Fix infinite loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14971 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 18:45:01 +00:00
Reid Spencer
e95ff9afa0 Remove an if statement that would never be reached. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14968 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:41:47 +00:00
Reid Spencer
c88920df66 Delete a redundant if branch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14967 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:34:52 +00:00
Reid Spencer
c3c2fdf5a8 Expand the coercion of constants to include the newly constant Globals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14966 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:34:19 +00:00
Reid Spencer
5f0eb64079 Delete a no-op loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14965 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:32:43 +00:00
Reid Spencer
c3c92d834a Expand the scope to include global values because they are now constants 
too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14964 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:32:10 +00:00
Reid Spencer
3188cab989 Avoid an unnecessary isa<Constant>. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14963 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:31:18 +00:00
Chris Lattner
da6cdfa9e8 Fix infinite loop gccld'ing povray 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14962 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 08:12:57 +00:00
Chris Lattner
67910e1eb0 CPR Fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14961 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 07:29:35 +00:00
Chris Lattner
7330248482 CPR fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14960 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 07:26:17 +00:00
Chris Lattner
25c6d68029 Remove useless statistic, fix some slightly broken logic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14958 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 07:22:58 +00:00
Chris Lattner
5827aebe64 Fix a rather serious bug in previous checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14957 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 06:56:58 +00:00
Reid Spencer
acc928042d Shrink some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14956 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 01:04:19 +00:00
Reid Spencer
518310cb0d bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14953 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:44:37 +00:00
Reid Spencer
40cf2f954e bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14951 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:41:27 +00:00
Reid Spencer
8863f1814b bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14950 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:38:32 +00:00
Reid Spencer
2786542aad bug 122: 
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14949 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:37:35 +00:00
Reid Spencer
460f16c625 bug 122: 
- Minimize redundant isa<GlobalValue> usage


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14948 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:32:14 +00:00
Reid Spencer
21cb67e16a bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14947 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:31:05 +00:00
Reid Spencer
48dc46a512 bug 122: 
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14946 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:29:57 +00:00
Reid Spencer
0c4a0418d3 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Rename methods to get ride of ConstantPointerRef usage


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14945 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:25:04 +00:00
Reid Spencer
3178158918 bug 122: 
- Excise dead CPR procesing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14944 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:23:51 +00:00
Reid Spencer
d02fccfdb8 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct test ordering for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14943 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:19:45 +00:00
Reid Spencer
e840434755 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14942 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:18:30 +00:00
Reid Spencer
e0125b6785 bug 122: 
- Correct ordering of tests because for GlobalValue isa Constant


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14941 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:16:21 +00:00
Reid Spencer
89fc0e3ce0 User ValueListTy as the type of the ValueList. This avoides the ValueList 
from being treated like a Function which can cause the contents of the list
to be come invalidated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14940 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:13:12 +00:00
Reid Spencer
a86037e4d9 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14939 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:12:03 +00:00
Reid Spencer
3c90f9fd12 bug 122: 
- Update for BytecodeHandler interface change resuing from CPRs going away


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14938 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:10:36 +00:00
Reid Spencer
3271ed554a bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass
- Remove tabs
- Fix coments refering to ConstantPointerRef


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14937 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:08:11 +00:00
Reid Spencer
e253cf60fd bug 122: 
- Move these functions from other places
- Provide implementations of Constant class overrides in GlobalValue


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14936 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:06:26 +00:00
Reid Spencer
a31fdda275 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Replace tabs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14935 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:03:48 +00:00
Reid Spencer
38696d2f2b bug 122: 
- Correct an assert to not have redundant isa<GlobalValue>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14934 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:02:41 +00:00
Reid Spencer
4ec2e4c578 bug 122: 
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14933 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 00:01:50 +00:00
Reid Spencer
ffe77d36eb bug 122: 
- Correct isa<Constant> for GlobalValue subclass
- Fix some tabs and indentation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14932 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:57:36 +00:00
Reid Spencer
0f7eea5d04 bug 122: 
- Module doesn't need to manage ConstantPointerRefs any more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14931 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:53:23 +00:00
Reid Spencer
00dc479613 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14930 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:50:57 +00:00
Reid Spencer
bb9051531c bug 122: 
- Move GlobalValue and GlobalVariable implementations to Globals.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14929 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:50:19 +00:00
Reid Spencer
1c9c8e64d2 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass
- Delete ConstantPointerRef member function implementations


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14928 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:48:33 +00:00
Reid Spencer
7970396014 bug 122: 
- Replace ConstantPointerRef usage with GlobalValue usage
- Minimize redundant isa<GlobalValue> usage
- Correct isa<Constant> for GlobalValue subclass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14927 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 23:47:01 +00:00
Chris Lattner
e1b9536d54 It looks like physref->virtreg joining is working fine. Enable it by default 
but make virtreg->virtreg joining stay off by default


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14916 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 21:51:25 +00:00
Chris Lattner
42df461c90 Make sure to emit the immediate byte for instructions like: 
shrd [mem], reg, imm

This fixes the jit-ls failure on 186.crafty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14914 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 20:26:14 +00:00
Chris Lattner
3b5e6e5f84 Reserve the correct amt of space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14913 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 20:24:05 +00:00
Misha Brukman
a57b76fece We don't really need to #include IPO.h into this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14911 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 18:37:46 +00:00
Chris Lattner
cb19d67907 Fix incorrect computation of mod/ref sets. Do not ask for mod/ref information 
for objects of size 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14908 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 07:40:34 +00:00
Chris Lattner
ad48cc71dc Print modref information in a useful way. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14907 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 06:43:20 +00:00
Chris Lattner
0e872cb470 Cleanups: fold two loops into one 
New features: -print-all-alias-modref-info option, print more info


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14906 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 06:28:49 +00:00
Misha Brukman
bebde759e5 * Use LI(S) to copy constants into registers intead of ADDI(S) as the latter is 
a funky way to "use" R0 for a 0-valued operand
* Add IMPLICIT_DEFs for incoming function arguments via registers to help the
  register allocator not clobber those registers
* Implement comparisons with longs
* Teach emitSelectOperation() to fold the SetCC operation

Patch contributed by Nate Begeman


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14901 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 21:06:24 +00:00
Misha Brukman
af7f28cdac * Store all non-volatile int registers R13-31 on the stack, restore on exit 
* Fix comment formatting


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14900 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:55:20 +00:00
Misha Brukman
be15f67af7 Fix code formatting 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14899 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:54:25 +00:00
Misha Brukman
01d46e9c55 Implement PowerPCInstrInfo::isMoveInstr(), patch by Nate Begeman 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14898 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:51:55 +00:00
Misha Brukman
6b4ea88e83 Add prototype for TargetInstrInfo::isMoveInstr() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14897 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:50:55 +00:00
Misha Brukman
86fd274790 * Enable allocation of registers r2-r10 
* Allocate registers 13-31 backwards (to be able to store them all at once)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14896 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:35:20 +00:00
Misha Brukman
2bf5438931 Add IMPLICIT_DEFS pseudo-instruction; patch by: Nate Begeman 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14895 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:33:41 +00:00
Misha Brukman
039ba763d1 The generated instruction selector isn't (yet) functional 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14894 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:31:13 +00:00
Misha Brukman
da2b13f694 * Output non-lazy linking stubs for external global variables 
* Get rid of dead and #if 0'd code
* Minor for loop speed-up: save end iterator instead of querying every time


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14893 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 20:29:04 +00:00
Misha Brukman
b3998ec5c5 Correctly build shared objects on MacOS X for debugging code generators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14892 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 19:45:45 +00:00
Misha Brukman
6f14ad1ca0 Define double alignment as 8 bytes now that assert(DoubleAlignment == PointerSize) 
has been eliminated


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14891 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 19:32:12 +00:00
Misha Brukman
29188c6ff6 * Add spaces between words and numbers in comments printed out for longs/floats 
* Print out IMPLICIT_DEFS as comments in the assembly, patch by Nate Begeman


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14890 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 19:01:13 +00:00
Misha Brukman
29baf29b01 Fix grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14888 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 17:40:28 +00:00
Alkis Evlogimenos
8e9b219b67 Add convinience constructor for function calls with two args. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14885 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 12:04:28 +00:00
Brian Gaeke
7c4676f341 Add a class for pseudo-instructions. Use it. 
Add IMPLICIT_USE and IMPLICIT_DEF, a la X86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14884 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 10:32:10 +00:00
Brian Gaeke
7d7ac63366 Add what will eventually be the TSFlags. Big switch(opcode) statements are bad. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14883 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 10:31:59 +00:00
Brian Gaeke
d303a2058c Add special handling for pseudo-instructions (print them as comments). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14882 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 10:31:47 +00:00
Brian Gaeke
22b5cd8ac7 Add to-do list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14881 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 10:31:36 +00:00
Brian Gaeke
812c488f0a Do IMPLICIT_DEFs on incoming args' hard regs, to avoid confusing the regalloc. 
Support single-fp incoming args.
Support single-fp outgoing args ('call' operands).
Support double-fp return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14880 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 10:31:25 +00:00
Chris Lattner
81d54465d9 The powerpc is now gone. However it is now just known as the Skeleton target. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14877 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 07:14:34 +00:00
Chris Lattner
9404cce349 Build the skeleton target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14875 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 07:11:53 +00:00
Chris Lattner
5ad021c8d4 Initial checkin of the rest of the skeleton target 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14874 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 07:11:15 +00:00
Chris Lattner
25c29d1e6c Initial skeleton tablegen files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14873 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 06:29:19 +00:00
Chris Lattner
522d9834a2 Add skeleton makefile 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14872 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 06:20:55 +00:00
Chris Lattner
6efa9d018c Initial readme 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14871 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 06:12:28 +00:00
Chris Lattner
a2d4b3cfeb Fix the regressions handling unnamed global variables 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14870 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 01:18:09 +00:00
Chris Lattner
4d143ee019 IA64 compat 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14867 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 00:08:28 +00:00
Chris Lattner
b8edf61fa9 Fix IA64 compatibility 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14866 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 00:06:01 +00:00
Chris Lattner
23f9ef062a Use new macro 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14865 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 00:04:54 +00:00
Chris Lattner
f99947c35f Be compatible with IA64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14864 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 00:04:13 +00:00
Chris Lattner
80b2d6c8c4 This patch was contributed by Daniel Berlin! 
Speed up SCCP substantially by processing overdefined values quickly.  This
patch speeds up SCCP by about 30-40% on large testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14861 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 23:36:43 +00:00
Chris Lattner
fed22aac43 Fix PR404 try #2 
This version takes about 1s longer than the previous one (down to 2.35s),
but on the positive side, it actually works :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14856 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 08:20:22 +00:00
Chris Lattner
69e5845a81 Nuke a clearly bogus assertion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14854 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 07:44:34 +00:00
Chris Lattner
de7aee760e Revert previous patch until I get a bug fixed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14853 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 05:36:31 +00:00
Chris Lattner
507e3d6dc3 Fix PR404: Loop simplify is really slow on 252.eon 
This eliminates an N*N*logN algorithm from the loop simplify pass, replacing
it with a much simpler and faster alternative.  In a debug build, this reduces
gccas time on eon from 85s to 42s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14851 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 04:27:04 +00:00
Chris Lattner
ed6c073097 Fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14848 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:51:32 +00:00
Chris Lattner
0a8e8e1a4e Fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14847 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:51:31 +00:00
Chris Lattner
f51c7f56ca Fix for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14845 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:40:04 +00:00
Chris Lattner
017fdcb76d Revert stuff that I didn't mean to checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14844 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:33:38 +00:00
Chris Lattner
1ff1ff70e3 Fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14843 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:31:46 +00:00
Chris Lattner
f92791ace5 Fix for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14842 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:26:49 +00:00
Chris Lattner
76e2df2645 Patches towards fixing PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14841 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:14:30 +00:00
Chris Lattner
30b4344767 Progress on PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14840 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 02:06:12 +00:00
Chris Lattner
2fc1230dd6 Fixes working towards PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14839 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 01:50:47 +00:00
Chris Lattner
ce36d55cf8 Bug fixes for PR341 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14838 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 01:29:12 +00:00
Chris Lattner
dd68469382 Implement folding of expressions like 'uint cast (int* getelementptr (int* 
null, uint 1) to uint)' to a constant integer.  We can only do this with
primitive LLVM types, because other types have target-specific sizes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14837 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 01:16:59 +00:00
Chris Lattner
8bfc2f11a4 Now that we codegen the portable "sizeof" efficiently, we can use it for 
malloc lowering.  This means that lowerallocations doesn't need targetdata
anymore.  yaay.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14835 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 01:08:08 +00:00
Chris Lattner
d2995df5b7 Improve codegen for the LLVM offsetof/sizeof "operator". Before we compiled 
this LLVM function:

int %foo() {
        ret int cast (int** getelementptr (int** null, int 1) to int)
}

into:

foo:
        mov %EAX, 0
        lea %EAX, DWORD PTR [%EAX + 4]
        ret

now we compile it into:

foo:
        mov %EAX, 4
        ret

This sequence is frequently generated by the MSIL front-end, and soon the malloc lowering pass and
Java front-ends as well..

-Chris


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14834 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-15 00:58:53 +00:00
Chris Lattner
0f01bbc3b2 This is logically part of the last patch. Just more really horrible code 
that is made unnecessary by it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14831 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 23:07:13 +00:00
Chris Lattner
a09000db75 ** Finally DeclareNewGlobalValue is dead! 
* Simplify a lot of code because type's cannot be in function symbol tables
* Fix memory leaks in handling of redefined function prototypes
* Don't use SymbolTable directly for stuff that we can go through the Module
  for.
* Fix some minor bugs on obscure testcases like:
      test/Feature/globalredefinition.ll
* Do not create GlobalVariable objects for forward referenced Functions!
* When forward referencing a function in a constant expression, do not create
  a placeholder, add a bunch of references to it, then turn around and
  replaceAllUsesOfWith on it with a new global, deleting the placeholder.
  Instead, when we find the real definition of the global, just use the
  placeholder instead of creating a new object.

This substantially simplifies the asmwriter and should even speed it up on
cases heavy in constantexprs (like C++, Java, MSIL)...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14830 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 23:03:46 +00:00
Chris Lattner
8a32784ad4 * Fairly substantial change. Instead of creating new globalvariables, then 
replaceAllUsesWith'ing any forward references, just use the forward
  reference if it exists.

This introduces GetForwardRefForGlobal, which will eventually completely
replace the horrible DeclareNewGlobalValue function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14828 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 21:44:00 +00:00
Chris Lattner
cb9d6a8f73 Fold setValueNameMergingDuplicates into ParseGlobalVariable, allowing us 
to substantially simplify the result.  In particular, we no longer create
GlobalVariables and then immediately destroy them when they are duplciate
definitions.

The real point of this patch though is that it gets us closer to the
DeclareNewGlobalValue calls...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14827 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 20:42:57 +00:00
Brian Gaeke
fe2102b61d Actually set the endian/pointersize flags on the module being read in! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14826 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 20:33:13 +00:00
Chris Lattner
f70770abd5 Simplify logic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14825 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 20:27:12 +00:00
Chris Lattner
d9ce6adfcc Fix a regression from last night. Apparently the CFE is broken and outputs 
functions multiple times, expecting them to be merged.  This should be fixed
in the CFE, then here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14823 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 19:33:47 +00:00
Misha Brukman
5f8cce1348 Make sure MTSPR instruction is inserted into the BasicBlock 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14822 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 18:26:31 +00:00
Chris Lattner
33af23d902 Implement new helper methods for creating two-index GEP instructions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14821 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-14 18:14:33 +00:00