b4905cbd12
add emitter support for integer constants and simple physreg references.
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llvm-svn: 96663
2010-02-19 07:49:56 +00:00
42a7ba7a67
add support for referencing registers and immediates,
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building the tree to represent them but not emitting
table entries for them yet.
llvm-svn: 96617
2010-02-18 22:03:03 +00:00
7ed81690ab
start sketching out the structure of code for result emission generation.
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Nothing real here yet.
llvm-svn: 96575
2010-02-18 06:47:49 +00:00
186ad8098e
rename the child field to 'next'. This is not a parent/child
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relationship, this is a linear list relationship.
llvm-svn: 96561
2010-02-18 02:53:41 +00:00
d582a367b5
eliminate the MatcherNodeWithChild class, give the 'child'
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field to MatcherNode.
llvm-svn: 96560
2010-02-18 02:49:24 +00:00
f46dba81a8
improve comments, the matcher is now feature complete, on to codegen.
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llvm-svn: 96464
2010-02-17 06:47:35 +00:00
f8a5bb0f89
Emulate the current isel's "IsChainCompatible" logic for now.
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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
2010-02-17 06:23:39 +00:00
f773f03736
improve comments on OPC_Record to say what we're recording a node.
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llvm-svn: 96433
2010-02-17 01:03:09 +00:00
e01545280b
improve comments in generated matcher a bit.
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llvm-svn: 96422
2010-02-17 00:39:26 +00:00
a845f654fa
make the new isel generator plop out a CheckComplexPattern function
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for evaluating complex patterns. Some cleanup has to happen before
this can be used though.
llvm-svn: 96419
2010-02-17 00:31:50 +00:00
f8695c1ee9
convert the new matcher to check intermediate nodes for a single
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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
2010-02-16 19:15:55 +00:00
5ce8303950
generate code for node and pattern predicates. Note that this won't
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build if enabled, it will fail with constness issues. I'll resolve
these next.
llvm-svn: 96336
2010-02-16 07:21:10 +00:00
1d689a09a9
refactor some code into a local class.
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llvm-svn: 96334
2010-02-16 06:52:01 +00:00
aa7d3e096b
add support for the new isel matcher to generate
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(isprofitable|islegal)tofold checks.
llvm-svn: 96331
2010-02-16 06:10:58 +00:00
b02cdaaa9c
Check in the first big step of rewriting DAGISelEmitter to
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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
2010-02-15 08:04:42 +00:00
Chris Lattner