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b5a23c5c71
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10 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
b5a23c5c71 Also compute MBB live-in lists in the new rewriter pass. 
This deduplicates some code from the optimizing register allocators, and
it means that it is now possible to change the register allocators'
solutions simply by editing the VirtRegMap between the register
allocator pass and the rewriter.

llvm-svn: 158249
 2012-06-09 00:14:47 +00:00
Jakob Stoklund Olesen
f711a08709 Move LiveUnionArray into LiveIntervalUnion.h 
It is useful outside RegAllocBase.

llvm-svn: 158041
 2012-06-05 23:57:30 +00:00
Jakob Stoklund Olesen
def0fa547f Don't print register names in LiveIntervalUnion::print(). 
Soon we'll be making LiveIntervalUnions for register units as well.

This was the only place using the RepReg member, so just remove it.

llvm-svn: 158038
 2012-06-05 23:07:19 +00:00
Jakob Stoklund Olesen
12dac91467 Simplify LiveInterval::print(). 
Don't print out the register number and spill weight, making the TRI
argument unnecessary.

This allows callers to interpret the reg field. It can currently be a
virtual register, a physical register, a spill slot, or a register unit.

llvm-svn: 158031
 2012-06-05 22:51:54 +00:00
Jakob Stoklund Olesen
be0b8939c0 Switch all register list clients to the new MC*Iterator interface. 
No functional change intended.

Sorry for the churn. The iterator classes are supposed to help avoid
giant commits like this one in the future. The TableGen-produced
register lists are getting quite large, and it may be necessary to
change the table representation.

This makes it possible to do so without changing all clients (again).

llvm-svn: 157854
 2012-06-01 23:28:30 +00:00
Jakob Stoklund Olesen
aff911c34c Don't look for empty live ranges in the unions. 
Empty live ranges represent undef and still get allocated, but they
won't appear in LiveIntervalUnions.

Patch by Patrik Hägglund!

llvm-svn: 156685
 2012-05-12 00:33:28 +00:00
Pete Cooper
426b167bc5 Moved LiveRangeEdit.h so that it can be called from other parts of the backend, not just libCodeGen 
llvm-svn: 153906
 2012-04-02 22:44:18 +00:00
Craig Topper
8cc9d75c6a Use uint16_t to store register overlaps to reduce static data. 
llvm-svn: 152001
 2012-03-04 10:43:23 +00:00
Jakob Stoklund Olesen
bae5c73b39 Sink spillInterferences into RABasic. 
This helper method is too simplistic for RAGreedy.

llvm-svn: 147976
 2012-01-11 22:52:14 +00:00
Jakob Stoklund Olesen
1494c6a3e0 Move RegAllocBase into its own cpp file separate from RABasic. 
No functional change.

llvm-svn: 147972
 2012-01-11 22:28:30 +00:00