49e19e906f
Factor out the predicate check code from DAGISelEmitter.cpp
...
and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.
llvm-svn: 55156
2008-08-22 00:20:26 +00:00
fe9056584b
Basic fast-isel support for instructions with constant int operands.
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llvm-svn: 55099
2008-08-21 01:41:07 +00:00
7b3932e5d8
Remove the code that limited FastISel to certain fixed signatures.
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llvm-svn: 55096
2008-08-21 00:35:26 +00:00
7170623b16
Begin making more use of the FastISelEmitter class.
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llvm-svn: 55093
2008-08-21 00:19:05 +00:00
e6724d404b
Remove an obsolete todo comment.
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llvm-svn: 55080
2008-08-20 21:47:28 +00:00
3e2225dfd6
Factor the code for determining the target-specific instruction
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namespace out of the isel emitters and into common code.
llvm-svn: 55079
2008-08-20 21:45:57 +00:00
02c84b8910
Simplify FastISel's constructor argument list, make the FastISel
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class hold a MachineRegisterInfo member, and make the
MachineBasicBlock be passed in to SelectInstructions rather
than the FastISel constructor.
llvm-svn: 55076
2008-08-20 21:05:57 +00:00
2dbebd7db5
For now, restrict FastISel to instructions that only involve one
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register class.
llvm-svn: 55008
2008-08-19 20:58:14 +00:00
98e6f1c48a
Factor out the code to scan an instruction's operands into a
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helper function.
llvm-svn: 55007
2008-08-19 20:56:30 +00:00
aa13b6f71b
Add more comments.
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llvm-svn: 55004
2008-08-19 20:36:33 +00:00
49520b99a3
Fix indentation in FastISel tablegen-emitted code.
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llvm-svn: 55003
2008-08-19 20:31:38 +00:00
a6c14d0ddb
Add more checking to filter out more kinds of things that
...
FastISel doesn't support yet.
llvm-svn: 55002
2008-08-19 20:30:54 +00:00
6a36fe912c
80 columns.
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llvm-svn: 54998
2008-08-19 18:07:49 +00:00
dbd5328238
Add a few doxygen comments.
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llvm-svn: 54997
2008-08-19 18:06:12 +00:00
b2226e21c3
Initial checkin of the new "fast" instruction selection support. See
...
the comments in FastISelEmitter.cpp for details on what this is.
This is currently experimental and unusable.
llvm-svn: 54751
2008-08-13 20:19:35 +00:00
Dan Gohman