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path: root/llvm/utils/TableGen/DAGISelMatcher.cpp
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* Emulate the current isel's "IsChainCompatible" logic for now.Chris Lattner2010-02-171-0/+6
| | | | | | | I'd like to eventually rip it out, but for now producing the same selections as the old matcher is more important. llvm-svn: 96458
* convert the new matcher to check intermediate nodes for a singleChris Lattner2010-02-161-8/+3
| | | | | | | | | use and only call IsProfitableToFold/IsLegalToFold on the load being folded, like the old dagiselemitter does. This substantially simplifies the code and improves opportunities for sharing. llvm-svn: 96368
* add support for the new isel matcher to generate Chris Lattner2010-02-161-0/+10
| | | | | | (isprofitable|islegal)tofold checks. llvm-svn: 96331
* Check in the first big step of rewriting DAGISelEmitter to Chris Lattner2010-02-151-0/+108
produce a table based matcher instead of gobs of C++ Code. Though it's not done yet, the shrinkage seems promising, the table for the X86 ISel is 75K and still has a lot of optimization to come (compare to the ~1.5M of .o generated the old way, much of which will go away). The code is currently disabled by default (the #if 0 in DAGISelEmitter.cpp). When enabled it generates a dead SelectCode2 function in the DAGISel Header which will eventually replace SelectCode. There is still a lot of stuff left to do, which are documented with a trail of FIXMEs. llvm-svn: 96215
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