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80 Commits

Author SHA1 Message Date
Owen Anderson
0c5714bb99 Rename registers that do not need copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 21:54:52 +00:00
Owen Anderson
0d893b4038 Actually insert copies now! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45738 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-08 05:16:15 +00:00
Owen Anderson
0b4825c38b Oops, missed one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45719 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 21:32:09 +00:00
Owen Anderson
9e549202a0 Make some predicates static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45718 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 21:30:40 +00:00
Chris Lattner
84bc5427d6 Rename SSARegMap -> MachineRegisterInfo in keeping with the idea 
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 04:13:23 +00:00
Chris Lattner
8aa797aa51 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45464 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 23:10:15 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Owen Anderson
f1519e8361 Flesh out the Briggs implementation a little bit more, fix a few FIXMEs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45347 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-24 22:12:23 +00:00
Owen Anderson
efbcebc95d Sketch out an implementation of Briggs' copy placement algorithm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45334 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-23 15:37:26 +00:00
Owen Anderson
cae8d8d4be Note what still needs doing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45310 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 04:59:10 +00:00
Owen Anderson
22c43b2988 Remove critical edge breaking. It won't be necessary as long as we are very careful when inserting copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45309 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-22 04:50:11 +00:00
Owen Anderson
87a702be1a Break local interferences in StrongPHIElimination. One step closer... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45070 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-16 05:44:27 +00:00
Owen Anderson
965b467767 A few more comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45069 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-16 04:07:23 +00:00
Owen Anderson
62d67dd3a3 Add register pairs to the list to check for local interferences. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44987 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-13 05:53:03 +00:00
Owen Anderson
4ba08ecbcf Remove ugly and horrible code. It's not necessary for correctness, and can be added back later if it causes code quality issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44986 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-13 05:43:37 +00:00
Owen Anderson
ed2ffa25a1 Forgot to remove a register from the PHI-union after I'd determined that it 
interfered with other registers.  Seems like that might be a good thing to do. :-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44902 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-12 01:25:08 +00:00
Owen Anderson
d525f664c9 More progress on StrongPHIElimination. Now we actually USE the DomForest! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44877 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-11 20:12:11 +00:00
Owen Anderson
afc6de0015 A little more progress on StrongPHIElimination, now that I have a better sense of 
how the CodeGen machinery works.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44786 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-10 08:07:09 +00:00
Owen Anderson
42f9e96e97 Run computeDomForest() on the set of registers that need to be tested for 
interference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44064 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 20:13:24 +00:00
Owen Anderson
17b1418bea Preserve LiveVariables when doing critical edge splitting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44063 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-13 20:04:45 +00:00
Owen Anderson
35e2dba672 Break critical edges coming into blocks with PHI nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44019 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-12 17:27:27 +00:00
Owen Anderson
fe0c882e5a As Chris and Evan pointed out, BreakCriticalMachineEdges doesn't really need 
to be a pass of its own.  Instead, move it out into a helper method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44002 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-12 01:05:09 +00:00
Owen Anderson
14b3fb7805 Take another stab at getting isLiveIn() and isLiveOut() right. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43869 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-08 01:32:45 +00:00
Owen Anderson
60a877d713 Add some more of StrongPHIElim. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43805 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-07 05:17:15 +00:00
Owen Anderson
8b96b9fce0 Add a few comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43755 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-06 05:26:02 +00:00
Owen Anderson
ee49b5385b DomForest is a forest of registers, not instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43754 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-06 05:22:43 +00:00
Owen Anderson
a4ad2e740a StrongPHIElimination requires LiveVariables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43751 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-06 04:49:43 +00:00
Owen Anderson
83430bce1d Another step of stronger PHI elimination down. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43684 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-11-04 22:33:26 +00:00
Duncan Sands
1bd3271b16 Add a newline at the end of the file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43550 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-31 08:49:24 +00:00
Owen Anderson
0bda0e8895 Add the skeleton of a better PHI elimination pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43542 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-10-31 03:37:57 +00:00