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138 Commits

Author SHA1 Message Date
Jim Grosbach 801b33b17c Move the utility function UpdateTerminator() from CodePlacementOpt() into 
MachineBasicBlock so other passes can utilize it.

llvm-svn: 86947
 2009-11-12 03:55:33 +00:00
Dan Gohman 64b5d0f468 Add support for tail duplication to BranchFolding, and extend 
tail merging support to handle more cases.
 - Recognize several cases where tail merging is beneficial even when
   the tail size is smaller than the generic threshold.
 - Make use of MachineInstrDesc::isBarrier to help detect
   non-fallthrough blocks.
 - Check for and avoid disrupting fall-through edges in more cases.

llvm-svn: 86871
 2009-11-11 19:48:59 +00:00
Dan Gohman 34341e69c4 Make -print-machineinstrs more readable. 
- Be consistent when referring to MachineBasicBlocks: BB#0.
 - Be consistent when referring to virtual registers: %reg1024.
 - Be consistent when referring to unknown physical registers: %physreg10.
 - Be consistent when referring to known physical registers: %RAX
 - Be consistent when referring to register 0: %reg0
 - Be consistent when printing alignments: align=16
 - Print jump table contents.
 - Don't print host addresses, in general.
 - and various other cleanups.

llvm-svn: 85682
 2009-10-31 20:19:03 +00:00
Dan Gohman e0a8b8fc56 Mention if a block has its address taken in debug output. 
llvm-svn: 85571
 2009-10-30 02:08:26 +00:00
Dan Gohman 6c9388011b Initial target-independent CodeGen support for BlockAddresses. 
llvm-svn: 85556
 2009-10-30 01:27:03 +00:00
Chris Lattner 565449d79e remove std::ostream versions of printing stuff for MBB and MF, 
upgrading a few things to use raw_ostream

llvm-svn: 79811
 2009-08-23 03:13:20 +00:00
Chris Lattner 1216f54276 remove dead PrefixPrinter class. 
llvm-svn: 79796
 2009-08-23 00:47:04 +00:00
Chris Lattner af119ca368 random cleanups. 
llvm-svn: 79794
 2009-08-23 00:35:30 +00:00
Chris Lattner 63d3fa5f3b fix another bozo bug 
llvm-svn: 79313
 2009-08-18 04:34:36 +00:00
Chris Lattner 249e1acf1b fix accidentally inverted conditional and add comment. 
llvm-svn: 79312
 2009-08-18 04:33:15 +00:00
Chris Lattner 523d2f6e2c turn this conditional into something humans might actually 
be able to understand ;-)

llvm-svn: 79311
 2009-08-18 04:30:35 +00:00
David Greene ec9bc28812 Re-apply LiveInterval index dumping patch, with fixes suggested by Bill 
and others.

llvm-svn: 78003
 2009-08-03 21:55:09 +00:00
Daniel Dunbar 796e43eede Move more to raw_ostream, provide support for writing MachineBasicBlock, 
LiveInterval, etc to raw_ostream.

llvm-svn: 76965
 2009-07-24 10:36:58 +00:00
Chris Lattner 1eede6c635 revert r76602, 76603, and r76615, pending design discussions. 
llvm-svn: 76646
 2009-07-21 21:12:58 +00:00
David Greene 3b458645be Add PrefixPrinter arguments to the dump routines for MachineFunction and 
MachineBasicBlock.  We'll use these shortly.

llvm-svn: 76603
 2009-07-21 18:27:05 +00:00
Dan Gohman bb2f10759e If a MachineBasicBlock has multiple ways of reaching another block, 
allow it to have multiple CFG edges to that block. This is needed
to allow MachineBasicBlock::isOnlyReachableByFallthrough to work
correctly. This fixes PR4126.

llvm-svn: 71018
 2009-05-05 21:10:19 +00:00
Dan Gohman 6b42dfddf4 Reapply 68073, with fixes. EH Landing-pad basic blocks are not 
entered via fall-through. Don't miss fallthroughs from blocks
terminated by conditional branches. Also, move
isOnlyReachableByFallthrough out of line.

llvm-svn: 68129
 2009-03-31 18:39:13 +00:00
Dan Gohman ff62c62b7c Constify arguments in isSuccessor and isLayoutSuccessor. 
llvm-svn: 68054
 2009-03-30 20:06:29 +00:00
Dan Gohman f87dc9264a Delete unnecessary parens around return values. 
llvm-svn: 61950
 2009-01-08 22:19:34 +00:00
Dan Gohman 0d1e9a8e04 Switch the MachineOperand accessors back to the short names like 
isReg, etc., from isRegister, etc.

llvm-svn: 57006
 2008-10-03 15:45:36 +00:00
Dan Gohman a78bae34a5 Add a new MachineBasicBlock utility function, isLayoutSuccessor, that 
can be used when deciding if a block can transfer control to another
via a fall-through instead of a branch.

llvm-svn: 56968
 2008-10-02 22:09:09 +00:00
Dan Gohman 38453eebdc Remove isImm(), isReg(), and friends, in favor of 
isImmediate(), isRegister(), and friends, to avoid confusion
about having two different names with the same meaning. I'm
not attached to the longer names, and would be ok with
changing to the shorter names if others prefer it.

llvm-svn: 56189
 2008-09-13 17:58:21 +00:00
Dan Gohman 804c95df52 Fold the useful features of alist and alist_node into ilist, and 
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.

llvm-svn: 54146
 2008-07-28 21:51:04 +00:00
Dan Gohman 0ece943845 Re-introduce LeakDetector support for MachineInstrs and MachineBasicBlocks. 
Fix a leak that this turned up in LowerSubregs.cpp.
And, comment a leak in LiveIntervalAnalysis.cpp.

llvm-svn: 53746
 2008-07-17 23:49:46 +00:00
Dan Gohman 3b46030375 Pool-allocation for MachineInstrs, MachineBasicBlocks, and 
MachineMemOperands. The pools are owned by MachineFunctions.

This drastically reduces the number of calls to malloc/free made
during the "Emit" phase of scheduling, as well as later phases
in CodeGen. Combined with other changes, this speeds up the
"instruction selection" phase of CodeGen by 10% in some cases.

llvm-svn: 53212
 2008-07-07 23:14:23 +00:00
Mon P Wang 3e58393c3d Added addition atomic instrinsics and, or, xor, min, and max. 
llvm-svn: 50663
 2008-05-05 19:05:59 +00:00
Evan Cheng 3980a7911a - Check if a register is livein before removing it. It may have already been removed. 
- Do not iterate over SmallPtrSet, the order of iteration is not deterministic.

llvm-svn: 50209
 2008-04-24 09:06:33 +00:00
Evan Cheng c799065cc3 Add a quick and dirty "loop aligner pass". x86 uses it to align its loops to 16-byte boundaries. 
llvm-svn: 47703
 2008-02-28 00:43:03 +00:00
Bill Wendling d7a258d325 Rename PrintableName to Name. 
llvm-svn: 47629
 2008-02-26 21:47:57 +00:00
Bill Wendling c24ea4fb41 Change "Name" to "AsmName" in the target register info. Gee, a refactoring tool 
would have been a Godsend here!

llvm-svn: 47625
 2008-02-26 21:11:01 +00:00
Dan Gohman 3a4be0fdef Rename MRegisterInfo to TargetRegisterInfo. 
llvm-svn: 46930
 2008-02-10 18:45:23 +00:00
Chris Lattner f3efadcb5b remove #includage 
llvm-svn: 45697
 2008-01-07 07:42:25 +00:00
Chris Lattner 03ad885039 rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.

llvm-svn: 45695
 2008-01-07 07:27:27 +00:00
Chris Lattner a98c679de0 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.

llvm-svn: 45674
 2008-01-07 01:56:04 +00:00
Chris Lattner 961e7427ea Implement automatically updated def/use lists for all MachineInstr register 
operands.  The lists are currently kept in MachineRegisterInfo, but it does
not yet provide an iterator interface to them.

llvm-svn: 45477
 2008-01-01 01:12:31 +00:00
Chris Lattner 574e7166e0 properly encapsulate the parent field of MBB and MI with get/set accessors. 
llvm-svn: 45469
 2007-12-31 04:56:33 +00:00
Chris Lattner a5bb370aa4 Add new shorter predicates for testing machine operands for various types: 
e.g. MO.isMBB() instead of MO.isMachineBasicBlock().  I don't plan on 
switching everything over, so new clients should just start using the 
shorter names.

Remove old long accessors, switching everything over to use the short
accessor: getMachineBasicBlock() -> getMBB(), 
getConstantPoolIndex() -> getIndex(), setMachineBasicBlock -> setMBB(), etc.

llvm-svn: 45464
 2007-12-30 23:10:15 +00:00
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Dan Gohman c731c97fac Use empty() member functions when that's what's being tested for instead 
of comparing begin() and end().

llvm-svn: 42585
 2007-10-03 19:26:29 +00:00
Anton Korobeynikov 35322d745c Silence warning while compiling with gcc 4.2 
llvm-svn: 41676
 2007-09-02 22:11:14 +00:00
David Greene 451d1a6ecd Fix misue of iterator pointing to erased object. Uncovered by 
_GLIBCXX_DEBUG.

llvm-svn: 37793
 2007-06-29 02:45:24 +00:00
Evan Cheng 2afd702c20 Move CorrectExtraCFGEdges() from BranchFolding.cpp to a MachineBasicBlock method. 
llvm-svn: 37633
 2007-06-18 22:43:58 +00:00
Evan Cheng df75785594 Move ReplaceUsesOfBlockWith() out of BranchFolding into a MachineBasicBlock general facility. 
llvm-svn: 37408
 2007-06-04 06:44:01 +00:00
Evan Cheng a92b2b38ff Move isSuccessor() offline, change it to use std::find. 
llvm-svn: 37190
 2007-05-17 23:58:53 +00:00
Chris Lattner f90c8fbd2b print isLandingPad() for MBBs 
llvm-svn: 36600
 2007-04-30 23:12:53 +00:00
Evan Cheng 9bc8d4b6f2 Print preds / succs BB numbers. 
llvm-svn: 35040
 2007-03-09 08:29:08 +00:00
Evan Cheng f7ed82da10 Re-apply my liveintervalanalysis changes. Now with PR1207 fixes. 
llvm-svn: 34428
 2007-02-19 21:49:54 +00:00
Reid Spencer da81bf4d3e For PR1207: 
Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.

llvm-svn: 34399
 2007-02-19 03:20:00 +00:00
Evan Cheng 41d2a1d8bf Added removeLiveIn. 
llvm-svn: 34381
 2007-02-17 11:10:48 +00:00
Evan Cheng bcf1d7faef Add live-ins to MachineBasicBlock. 
llvm-svn: 34111
 2007-02-10 02:38:19 +00:00
Jeff Cohen 29192e6274 The best unbreakage yet, addressing Bill's concerns. 
llvm-svn: 32622
 2006-12-16 02:15:42 +00:00
Jeff Cohen b82309f1ab An even better unbreakage... 
llvm-svn: 32617
 2006-12-15 22:57:14 +00:00
Bill Wendling 355fc5ad50 Removed more <iostream> includes 
llvm-svn: 32321
 2006-12-07 20:28:15 +00:00
Evan Cheng 20350c4025 Change MachineInstr ctor's to take a TargetInstrDescriptor reference instead 
of opcode and number of operands.

llvm-svn: 31947
 2006-11-27 23:37:22 +00:00
Chris Lattner ace542fa6c Implement operator<< for machine basic blocks to make it easier to dump them. 
llvm-svn: 31857
 2006-11-18 21:47:36 +00:00
Chris Lattner 94866bef35 add moveBefore/moveAfter helper methods 
llvm-svn: 31145
 2006-10-24 00:02:26 +00:00
Chris Lattner 4e107aa0b6 print labels even if a MBB doesn't have a corresponding LLVM BB, just don't 
print the LLVM BB label.

llvm-svn: 30775
 2006-10-06 21:28:17 +00:00
Chris Lattner 16ae43e901 MachineBasicBlock::splice was incorrectly updating parent pointers on 
instructions.

llvm-svn: 30760
 2006-10-06 01:12:44 +00:00
Chris Lattner de154b1737 Print the MBB ID # along with the bb tag in the -print-machine-instrs output. 
llvm-svn: 30708
 2006-10-03 20:17:24 +00:00
Chris Lattner 9a1e91b107 print the preds of each MBB 
llvm-svn: 30606
 2006-09-26 03:41:59 +00:00
Owen Anderson 8c2c1e90c4 Refactor a bunch of includes so that TargetMachine.h doesn't have to include 
TargetData.h.  This should make recompiles a bit faster with my current
TargetData tinkering.

llvm-svn: 28238
 2006-05-12 06:33:49 +00:00
Chris Lattner 469647bf38 Remove and simplify some more machineinstr/machineoperand stuff. 
llvm-svn: 28105
 2006-05-04 18:16:01 +00:00
Chris Lattner ee64b6b40f Remove a bunch more dead V9 specific stuff 
llvm-svn: 28094
 2006-05-04 01:26:39 +00:00
Misha Brukman 835702a094 Remove trailing whitespace 
llvm-svn: 21420
 2005-04-21 22:36:52 +00:00
Chris Lattner 329c14a8bc print the machine CFG in the -print-machineinstrs dump 
llvm-svn: 20976
 2005-04-01 06:48:38 +00:00
Chris Lattner f6c93e36c7 Improve conformance with the Misha spelling benchmark suite 
llvm-svn: 19930
 2005-01-30 00:09:23 +00:00
Chris Lattner e6074aa08b adjust to ilist changes. 
llvm-svn: 19924
 2005-01-29 18:41:25 +00:00
Chris Lattner 4336b87f2c Move method bodies that depend on <algorithm> from MBB.h to MBB.cpp 
llvm-svn: 17253
 2004-10-26 15:43:42 +00:00
Alkis Evlogimenos fcb3f5197e Indent to 2 spaces. 
llvm-svn: 16187
 2004-09-05 18:39:20 +00:00
Reid Spencer 7c16caa336 Changes For Bug 352 
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.

llvm-svn: 16137
 2004-09-01 22:55:40 +00:00
Reid Spencer eb04d9bcb4 Add #include <iostream> since Value.h does not #include it any more. 
llvm-svn: 14622
 2004-07-04 12:19:56 +00:00
Chris Lattner 449af59c7e Change MBB autonumber a bit to get the reverse mapping as well as a forward 
mapping

llvm-svn: 14521
 2004-07-01 06:02:27 +00:00
Tanya Lattner 23dbc8170c 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
Brian Gaeke 4300ca9d32 Make debugging dumps w/ multiple MachineBBs for a given LLVM BB readable. 
llvm-svn: 14205
 2004-06-17 22:26:53 +00:00
Chris Lattner 2150542af9 Adjust to new TargetMachine interface 
llvm-svn: 13956
 2004-06-02 05:57:12 +00:00
Tanya Lattner 91fa3a9908 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 a578cb7a65 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
Chris Lattner 18dad6ed52 Eliminate an explicit use of the LLVM basic block, using getParent instead, 
which simplifies the code

llvm-svn: 13707
 2004-05-24 03:44:52 +00:00
Brian Gaeke cb5d22a0cb Add non-const MachineBasicBlock::getParent() accessor method. 
MBBs start out as #-1. When a MBB is added to a MachineFunction, it
gets the next available unique MBB number. If it is removed from a
MachineFunction, it goes back to being #-1.

llvm-svn: 13514
 2004-05-12 21:35:22 +00:00
Alkis Evlogimenos b525d54045 Use MachineBasicBlock::getParent(). 
llvm-svn: 11756
 2004-02-23 18:36:38 +00:00
Alkis Evlogimenos af2de4848e 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
Chris Lattner d23a882f2f Add a MachineBasicBlock::getParent() method 
llvm-svn: 11622
 2004-02-19 16:13:54 +00:00
Alkis Evlogimenos 14f3fe81c6 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
Chris Lattner 8c63b6897d Change MachineBasicBlock's to not be Annotations, instead they are kept as 
part of a linked list tracked by MachineFunction.  MachineBasicBlock::get
is now linear time instead of constant time, and thus is deprecated!

llvm-svn: 4337
 2002-10-28 05:30:46 +00:00
Chris Lattner 8710aab04c Rename MachineCodeForBasicBlock to MachineBasicBlock 
llvm-svn: 4318
 2002-10-28 01:41:47 +00:00
Chris Lattner 9baa9ad7c7 Inline some methods from .cpp files into .h files, minor cleanups 
llvm-svn: 4313
 2002-10-28 01:21:55 +00:00
Chris Lattner 9f99867c6c Updates to match misha's changes 
llvm-svn: 4302
 2002-10-28 00:37:53 +00:00
Vikram S. Adve f0b84cefb0 Implementation of class MachineCodeForBasicBlock. 
Moved here from MachineInstr.cpp to make it an annotation on BasicBlock.

llvm-svn: 2827
 2002-07-08 23:01:11 +00:00