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Author SHA1 Message Date
Benjamin Kramer 4c93d15f09 Twinify GraphWriter a little bit. 
llvm-svn: 144647
 2011-11-15 16:26:38 +00:00
Anna Zaks 2c2aa9a9be Function::getNumBlockIDs() should be used instead of Function::size() to set the upper limit on the block IDs since basic blocks might get removed (simplified away) after being initially numbered. Plus the test case, in which SelectionDAGBuilder::visitBr() calls llvm::MachineFunction::removeFromMBBNumbering(), which introduces the hole in numbering leading to an assert in llc (prior to the fix). 
llvm-svn: 133113
 2011-06-16 00:03:21 +00:00
Jakob Stoklund Olesen ed47ed4e80 Build the Hopfield network incrementally when splitting global live ranges. 
It is common for large live ranges to have few basic blocks with register uses
and many live-through blocks without any uses. This approach grows the Hopfield
network incrementally around the use blocks, completely avoiding checking
interference for some through blocks.

llvm-svn: 129188
 2011-04-09 02:59:09 +00:00
Jakob Stoklund Olesen f3ac733684 Add a hidden command line option to display edge bundle graphs as they are 
calculated.

llvm-svn: 122912
 2011-01-05 21:50:24 +00:00
Jakob Stoklund Olesen f96ae684c4 Turn the EdgeBundles class into a stand-alone machine CFG analysis pass. 
The analysis will be needed by both the greedy register allocator and the
X86FloatingPoint pass. It only needs to be computed once when the CFG doesn't
change.

This pass is very fast, usually showing up as 0.0% wall time.

llvm-svn: 122832
 2011-01-04 21:10:05 +00:00