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525 Commits

Author SHA1 Message Date
Chris Lattner
b6b8d6e242 This class is no longer an annotation 
llvm-svn: 14437
 2004-06-27 18:50:49 +00:00
Chris Lattner
642e65c537 Add a map of MachineCodeForInstruction objects to MachineFunctionInfo 
llvm-svn: 14436
 2004-06-27 18:50:30 +00:00
Chris Lattner
19e5c047c7 Make it obvious that this file is bad bad bad 
llvm-svn: 14432
 2004-06-27 18:21:20 +00:00
Tanya Lattner
da38dc5180 Made a fix so that you can print out MachineInstrs that belong to a MachineBasicBlock that is not yet attached to a MachineFunction. This change includes changing the third operand (TargetMachine) to a pointer for the MachineInstr::print function. 
llvm-svn: 14389
 2004-06-25 00:13:11 +00:00
Chris Lattner
9da4181217 Start moving IntrinsicLowering out of VMCore into libcodegen, as per PR346 
llvm-svn: 14264
 2004-06-20 07:40:46 +00:00
Brian Gaeke
fb83999991 Add a forwarding method pop_front() that allows you to delete instructions 
from the beginning of a MBB.

llvm-svn: 14074
 2004-06-08 18:52:47 +00:00
Brian Gaeke
4b0b12c188 Add a TmpInstruction ctor that doesn't take a MCFI. 
llvm-svn: 14073
 2004-06-08 18:52:46 +00:00
Misha Brukman
d608ac24d7 Clarify documentation and use correct doxygen comment form /// vs. // . 
Thanks to Vladimir Prus for corrections.

llvm-svn: 14009
 2004-06-04 14:51:25 +00:00
Tanya Lattner
7cf16701f7 Moved MachineBasicBlock deconstructor to cpp file and removed it from LeakDetector to fix memory leak bug. 
llvm-svn: 13718
 2004-05-24 07:14:35 +00:00
Tanya Lattner
aabaaec037 Added MachineFunction parent* to MachineBasicBlock. Customized ilist template 
to set the parent when a MachineBasicBlock is added to a MachineFunction.

llvm-svn: 13716
 2004-05-24 06:11:51 +00:00
Tanya Lattner
55477a5af1 Changed clone to be const. 
Changed copy constructor to set parent, prev, and next pointers to null.

llvm-svn: 13706
 2004-05-24 03:14:18 +00:00
Tanya Lattner
e755fc6689 Fixed up my changes to add support for cloning Machine Instructions. 
llvm-svn: 13665
 2004-05-23 20:58:02 +00:00
Tanya Lattner
2848065a29 Adding support to clone MachineInstr 
llvm-svn: 13661
 2004-05-23 19:35:12 +00:00
Brian Gaeke
f00f4ca846 Fix a typo in the head-of-file comment. 
Rewrite the comments about the different versions of BuildMI, to
better emphasize their differences.

llvm-svn: 13642
 2004-05-23 05:04:00 +00:00
Brian Gaeke
b964085c4c Fix a comment. 
llvm-svn: 13518
 2004-05-12 21:57:23 +00:00
Brian Gaeke
0315644cd7 Add a NextMBBNumber field w/ incrementing accessor method, for 
function-level unique numbering of MBBs.

llvm-svn: 13513
 2004-05-12 21:35:21 +00:00
Brian Gaeke
a0d9f814da Add a Number field w/ accessor method, for function-level unique numbering 
of MBBs.

Add non-const MachineBasicBlock::getParent() accessor method.

llvm-svn: 13512
 2004-05-12 21:35:20 +00:00
Tanya Lattner
c69bb49340 Fixed up sched graph. 
llvm-svn: 13428
 2004-05-08 16:14:24 +00:00
Tanya Lattner
9b4ee61855 Registering the ModuloScheduling pass. 
llvm-svn: 13427
 2004-05-08 16:14:02 +00:00
Brian Gaeke
397162e886 Chris told me to take these assertions out a few days ago, but I forgot to 
check this in.

llvm-svn: 13313
 2004-05-02 01:04:52 +00:00
Chris Lattner
dd7eb23ccf Stop LiveVariables from using BasicBlocks as part of the mapping, instead 
use MachineBasicBlocks.

llvm-svn: 13300
 2004-05-01 21:23:35 +00:00
Chris Lattner
939685e14b Move the GraphTraits for MachineBasicBlocks to the MachineBasicBlock file. 
llvm-svn: 13299
 2004-05-01 21:05:34 +00:00
Brian Gaeke
8e3668faca Add pred./succ. list size methods. 
llvm-svn: 13214
 2004-04-28 04:46:35 +00:00
Brian Gaeke
369fa0ed81 Move private methods to end of class decl at Chris's request 
llvm-svn: 13210
 2004-04-28 04:15:06 +00:00
Brian Gaeke
d63179c70b Fix thinkos that Chris caught for me. 
Make pred mutators private.

llvm-svn: 13209
 2004-04-28 03:59:48 +00:00
Brian Gaeke
213538a039 Add machine-code CFG support: MachineBasicBlocks may now have their own 
predecessors and successors

llvm-svn: 13208
 2004-04-28 02:16:33 +00:00
Brian Gaeke
2f5697a29f Add emitWordAt() - a quick and dirty interface that the machine-dependent 
emitters can use to emit "relocations".

llvm-svn: 13116
 2004-04-23 17:11:12 +00:00
Brian Gaeke
2a087ad673 Include <string> for compatibility with gcc 3.0.x (the system compiler on 
Debian.)

llvm-svn: 12985
 2004-04-16 15:57:14 +00:00
Brian Gaeke
95213bd702 This file does not appear to be included anywhere. 
llvm-svn: 12777
 2004-04-08 19:36:26 +00:00
Brian Gaeke
14dadd43e1 This file is no longer used. 
llvm-svn: 12767
 2004-04-07 21:01:22 +00:00
Chris Lattner
c241db65d6 Allow converting a builder to an iterator 
llvm-svn: 12586
 2004-04-01 04:03:10 +00:00
Brian Gaeke
e7f4f73f67 Add clear() forwarding method. 
llvm-svn: 12580
 2004-03-31 22:43:12 +00:00
Chris Lattner
3f24ea6ccf MachineBasicBlock::remove should not change the iterator passed into it 
llvm-svn: 12569
 2004-03-31 21:58:50 +00:00
Alkis Evlogimenos
64aa7f3708 Fix bug introduced by yesterday's changes. 
llvm-svn: 12119
 2004-03-04 18:02:07 +00:00
Brian Gaeke
aa96ff7926 Make MachineOperand's value named 'contents'. Make really, really sure 
it is always completely initialized and copied.
Also, fix up many comments and asserts.

llvm-svn: 12100
 2004-03-03 19:07:27 +00:00
Chris Lattner
4c7ed6793e Remove public header. It's been moved to lib/Target/SparcV9 
llvm-svn: 12004
 2004-02-29 19:13:20 +00:00
Chris Lattner
df24575c31 Do not use explicit casts that hide the dependence on Instruction being 
annotable

llvm-svn: 12000
 2004-02-29 19:02:26 +00:00
Chris Lattner
768b31fc77 Remove unneeded #include 
llvm-svn: 11978
 2004-02-29 05:15:56 +00:00
Chris Lattner
34977159b3 Continue Alkis's int64_t cleanup. This makes all of the immediate related 
methods take an int or unsigned value instead of int64_t.

Also, add an 'addImm' method to the MachineInstrBuilder class, because the
fact that the hardware sign or zero extends it does not/should not matter
to the code generator.  Once the old sparc backend is removed the difference
can be eliminated.

llvm-svn: 11976
 2004-02-29 05:06:49 +00:00
Chris Lattner
85dd74a158 Add BuildMI variants that take a MBB::iterator 
llvm-svn: 11975
 2004-02-29 04:55:28 +00:00
Alkis Evlogimenos
5193c08a8a Make MachineOperand's immediate value an int and save 4 bytes out of 
each MachineOperand. We don't really need an int64_t immediate :-).

llvm-svn: 11906
 2004-02-27 15:05:28 +00:00
Alkis Evlogimenos
f1516015af Add DenseMap template and actually use it for for mapping virtual regs 
to objects.

llvm-svn: 11840
 2004-02-25 21:55:45 +00:00
Brian Gaeke
eae0364189 FunctionLiveVarInfo.h moved: include/llvm/CodeGen -> lib/Target/Sparc/LiveVar 
llvm-svn: 11804
 2004-02-24 19:46:00 +00:00
Alkis Evlogimenos
9b103024ef Refactor rewinding code for finding the first terminator of a basic 
block into MachineBasicBlock::getFirstTerminator().

This also fixes a bug in the implementation of the above in both
RegAllocLocal and InstrSched, where instructions where added after the
terminator if the basic block's only instruction was a terminator (it
shouldn't matter for RegAllocLocal since this case never occurs in
practice).

llvm-svn: 11748
 2004-02-23 18:14:48 +00:00
Alkis Evlogimenos
850bd0819f Move LiveIntervals.h to lib/CodeGen since it shouldn't be exposed to other parts of the compiler 
llvm-svn: 11719
 2004-02-23 00:50:15 +00:00
Alkis Evlogimenos
7f7d70a53c Move MOTy::UseType enum into MachineOperand. This eliminates the 
switch statements in the constructors and simplifies the
implementation of the getUseType() member function. You will have to
specify defs using MachineOperand::Def instead of MOTy::Def though
(similarly for Use and UseAndDef).

llvm-svn: 11715
 2004-02-22 19:23:26 +00:00
Alkis Evlogimenos
abc8efe386 Fix silly bug in implementation of getUseType(). Thanks Misha. 
llvm-svn: 11711
 2004-02-22 07:24:19 +00:00
Alkis Evlogimenos
6998610eda When folding memory operands in machine instructions be careful to 
leave register operands with the same use/def flags as the original
instruction.

llvm-svn: 11709
 2004-02-22 06:54:26 +00:00
Alkis Evlogimenos
32d12d31ae Abstract merging of ranges away from number of slots per instruction. 
Also make it less aggressive as the current implementation breaks in
some cases.

llvm-svn: 11696
 2004-02-22 04:05:13 +00:00
Alkis Evlogimenos
f32239a5c6 Too many changes in one commit: 
1. LiveIntervals now implement a 4 slot per instruction model. Load,
   Use, Def and a Store slot. This is required in order to correctly
   represent caller saved register clobbering on function calls,
   register reuse in the same instruction (def resues last use) and
   also spill code added later by the allocator. The previous
   representation (2 slots per instruction) was insufficient and as a
   result was causing subtle bugs.

2. Fixes in spill code generation. This was the major cause of
   failures in the test suite.

3. Linear scan now has core support for folding memory operands. This
   is untested and not enabled (the live interval update function does
   not attempt to fold loads/stores in instructions).

4. Lots of improvements in the debugging output of both live intervals
   and linear scan. Give it a try... it is beautiful :-)

In summary the above fixes all the issues with the recent reserved
register elimination changes and get the allocator very close to the
next big step: folding memory operands.

llvm-svn: 11654
 2004-02-20 06:15:40 +00:00
Chris Lattner
6c338f7627 ADd a method for when an instruction moves 
llvm-svn: 11626
 2004-02-19 18:28:22 +00:00
Chris Lattner
436ab13009 Add a MachineBasicBlock::getParent() method 
llvm-svn: 11622
 2004-02-19 16:13:54 +00:00
Alkis Evlogimenos
d4fd43dee8 Move unused typedefs in private section. Add method to return interval 
given a register.

llvm-svn: 11608
 2004-02-18 23:14:52 +00:00
Chris Lattner
34f3bce70c eliminate a pair of really inefficient methods now that noone uses them 
llvm-svn: 11579
 2004-02-18 16:45:22 +00:00
Alkis Evlogimenos
a479dc4715 Add LiveIntervals::Interval::empty() member function. 
llvm-svn: 11520
 2004-02-17 05:14:37 +00:00
Alkis Evlogimenos
790b000aa7 Add LeakDetection to MachineInstr. 
Move out of line member functions of MachineBasicBlock to
MachineBasicBlock.cpp.

llvm-svn: 11497
 2004-02-16 07:17:43 +00:00
Alkis Evlogimenos
1026a01d5a Eliminate the use of spill (reserved) registers. 
llvm-svn: 11476
 2004-02-15 10:24:21 +00:00
Chris Lattner
bbe538e930 finegrainify namespacification 
llvm-svn: 11469
 2004-02-15 05:52:36 +00:00
Alkis Evlogimenos
6d6ab846af Remove getAllocatedRegNum(). Use getReg() instead. 
llvm-svn: 11393
 2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
e504fa6710 Mark MachineBasicBlock::operator[] deprecated. 
llvm-svn: 11392
 2004-02-13 20:05:56 +00:00
Alkis Evlogimenos
c109214f58 Add getNumVirtualRegs(). 
Whitespace cleanups.

llvm-svn: 11388
 2004-02-13 18:07:06 +00:00
Brian Gaeke
7707461afa Include <iosfwd>. 
Add prototypes for MachineBasicBlock's dump() and print() methods.

llvm-svn: 11365
 2004-02-13 04:40:15 +00:00
Alkis Evlogimenos
00d97b6a13 Move ilist_trairs<MachineInstr> in MachineBasicBlock. 
llvm-svn: 11358
 2004-02-12 19:12:03 +00:00
Alkis Evlogimenos
3ecdcd18c5 Add parent pointer to MachineInstr that points to owning 
MachineBasicBlock. Also change opcode to a short and numImplicitRefs
to an unsigned char so that overall MachineInstr's size stays the
same.

llvm-svn: 11357
 2004-02-12 18:49:07 +00:00
Chris Lattner
ef375052c6 Rename the opCode instance variable to Opcode 
llvm-svn: 11348
 2004-02-12 16:09:53 +00:00
Chris Lattner
04c37927bd Remove a dead field from MachineInstr! 
llvm-svn: 11347
 2004-02-12 16:05:03 +00:00
Brian Gaeke
57484e290d Add one more doxygen comment. 
llvm-svn: 11344
 2004-02-12 04:26:49 +00:00
Brian Gaeke
840e7e40fe Express one of MachineOperand's many constructors in terms of another, by means of default arguments. 
llvm-svn: 11343
 2004-02-12 04:15:00 +00:00
Brian Gaeke
0608698c34 Remove these MachineOpCodeFlags and their accessor - they are never set. 
llvm-svn: 11341
 2004-02-12 04:00:55 +00:00
Alkis Evlogimenos
b755d35fd2 Change MachineBasicBlock's vector of MachineInstr pointers into an 
ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.

llvm-svn: 11340
 2004-02-12 02:27:10 +00:00
Brian Gaeke
2e521768eb Remove getOpCode(). Help doxygenify some comments. 
llvm-svn: 11338
 2004-02-12 01:34:03 +00:00
Chris Lattner
a04a1456da Urg, the X86 backend DOES use virtual register operands. :( 
llvm-svn: 11288
 2004-02-10 21:43:11 +00:00
Chris Lattner
286169ff60 Remove and simplify some of the bewildering collection of isFOORegister 
methods which have strangely different semantics in different backends,
and noone knew what any did.

Getting rid of these ALSO allows the dependence of MachineInstr.h on
MRegisterInfo.h to be removed, which makes me much happier, and probably
alkis too.  :)

llvm-svn: 11287
 2004-02-10 21:21:17 +00:00
Chris Lattner
04f36062ea Eliminate MachineOperand::isPhysicalRegister. The X86 backend should use 
MRegisterInfo::isPhysicalRegister(MO.getReg()) and the Sparc backend should
use isMachineRegister()

llvm-svn: 11279
 2004-02-10 20:42:11 +00:00
Chris Lattner
854737de3f Simplify condition, this does not change the predicate at all though 
llvm-svn: 11275
 2004-02-10 20:30:40 +00:00
Brian Gaeke
00b2107e2a SchedGraph doesn't need to be friends with SchedGraphNodeCommon anymore. 
llvm-svn: 11240
 2004-02-09 18:43:06 +00:00
Alkis Evlogimenos
676e5b8997 Modify the two address instruction pass to remove the duplicate 
operand of the instruction and thus simplify the register allocation.

llvm-svn: 11124
 2004-02-04 22:17:40 +00:00
Brian Gaeke
efde1c6bb8 Include <iosfwd> and <string> instead of <iostream>. 
Take away the default iostream argument of createMachineFunctionPrinterPass(),
at Chris's request.

llvm-svn: 11121
 2004-02-04 21:41:10 +00:00
Alkis Evlogimenos
5e78d4bd75 When an instruction like: A += B had both A and B virtual registers 
spilled, A was loaded from its stack location twice. This fixes the bug.

llvm-svn: 11093
 2004-02-03 01:13:07 +00:00
Alkis Evlogimenos
e128cb3295 Revert changes. Will implement this using a different set of primitives 
llvm-svn: 11091
 2004-02-02 23:08:58 +00:00
Alkis Evlogimenos
e20cdc6437 Add MachineOperand::setDef() and MachineOperand::setUse() so that the 
TwoAddressInstructionPass can correctly update use/def information.

llvm-svn: 11086
 2004-02-02 21:55:18 +00:00
Alkis Evlogimenos
d1ec5f36ee Merge safe parts from last night's buggy commit. These do not break 
any test cases :-)

llvm-svn: 11032
 2004-01-31 19:59:32 +00:00
Alkis Evlogimenos
b9df133d67 Revert last night's changes as they broke some tests. Will remerge parts of the patch. 
llvm-svn: 11029
 2004-01-31 14:37:41 +00:00
Alkis Evlogimenos
c0db519832 Several performance enhancements and cleanups from Chris. 
Simplification of LiveIntervals::Interval::overlaps() and addition of
examples to overlaps() and liveAt() to make them clearer.

llvm-svn: 11028
 2004-01-31 04:56:07 +00:00
Chris Lattner
8671a315d5 Add a new lazily constructed mapping from Idx's the MBB they represent 
llvm-svn: 11017
 2004-01-30 22:08:09 +00:00
Brian Gaeke
9cf840250b Give clients of MachineFunctionPrinter the ability to specify a banner and 
choose an ostream.

llvm-svn: 11016
 2004-01-30 21:53:46 +00:00
Alkis Evlogimenos
2a8df1739b Fix failing test cases with joined live intervals. It turns out that 
when joining we need to check if we overlap with the second interval
or any of its aliases.

Also make joining intervals the default.

llvm-svn: 10973
 2004-01-23 13:37:51 +00:00
Alkis Evlogimenos
b4745bda05 Add option to join live intervals. Two intervals are joined if there 
is a move between two registers, at least one of the registers is
virtual and the two live intervals do not overlap.

This results in about 40% reduction in intervals, 30% decrease in the
register allocators running time and a 20% increase in peephole
optimizations (mainly move eliminations).

The option can be enabled by passing -join-liveintervals where
appropriate.

llvm-svn: 10965
 2004-01-22 23:08:45 +00:00
Tanya Lattner
33079fad04 Moved iterators to common file. 
llvm-svn: 10925
 2004-01-20 17:49:42 +00:00
Alkis Evlogimenos
38f0f867b3 Fold open interval ends handling into 
LiveIntervals::Interval::expiredAt() and simplify regalloc code.

llvm-svn: 10894
 2004-01-16 20:17:05 +00:00
Alkis Evlogimenos
61db3621bd Use a list instead of a vector to store intervals. This will be needed 
when we join intervals and one of the two will need to be removed.

llvm-svn: 10892
 2004-01-16 16:06:59 +00:00
Alkis Evlogimenos
c73c31a496 Remove allocatable registers vector. It is already provided by 
LiveVariables.

llvm-svn: 10830
 2004-01-13 22:10:43 +00:00
Alkis Evlogimenos
ef7c077e63 Make LiveVariables::HandlePhysRegUse and 
LiveVariables::HandlePhysRegDef private they use information that is
not in memory when LiveVariables finishes the analysis.

Also update the TwoAddressInstructionPass to not use this interface.

llvm-svn: 10755
 2004-01-11 09:18:45 +00:00
Chris Lattner
c37577eb9f Clean up a lot of the code I added yesterday by exposing the IntrinsicLowering 
implementation from the TargetMachine directly.

llvm-svn: 10636
 2003-12-28 21:23:38 +00:00
Alkis Evlogimenos
fc01aac4d8 Add coalescing to register allocator. A hint is added to each interval 
which denotes the register we would like to be assigned to (virtual or
physical). In register allocation, if this hint exists and we can map
it to a physical register (it is either a physical register or it is a
virtual register that already got assigned to a physical one) we use
that register if it is available instead of a random one in the free
pool.

llvm-svn: 10634
 2003-12-28 17:58:18 +00:00
Chris Lattner
215d4146fe add argument 
llvm-svn: 10625
 2003-12-28 09:42:49 +00:00
Chris Lattner
00a54b7c00 Move header into top-level llvm dir 
llvm-svn: 10622
 2003-12-28 08:30:07 +00:00
Chris Lattner
8bc92e92ee Add new interface that allows removal of some code from the code generators, 
provides for future extensibility, might help the LLVA project avoid having to
hack their own LLI, and provides support required for the experimental Venus
project.

llvm-svn: 10620
 2003-12-28 08:19:13 +00:00
Alkis Evlogimenos
4401d0a7a3 Change weight into a float so that we can take into account the 
nesting level when computing it. Right now the allocator uses:

    w = sum_over_defs_uses( 10 ^ nesting level );

llvm-svn: 10569
 2003-12-21 20:19:10 +00:00
Alkis Evlogimenos
4f98b79ef0 Add support for inactive intervals. This effectively reuses registers 
for live ranges that fall into assigned registers' holes.

llvm-svn: 10566
 2003-12-21 05:43:40 +00:00