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114 Commits

Author SHA1 Message Date
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