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72 Commits

Author SHA1 Message Date
Dan Gohman 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
Dan Gohman 6a7461ad9b Have FastISel skip the multiply by 1 for getelementptr on i8*. 
llvm-svn: 55129
 2008-08-21 17:37:05 +00:00
Dan Gohman efb7d2d03d MVT::getMVT uses iPTR for pointer types, while we need the actual 
intptr_t type in this case. FastISel can now select simple
getelementptr instructions.

llvm-svn: 55125
 2008-08-21 17:25:26 +00:00
Dan Gohman fe9056584b Basic fast-isel support for instructions with constant int operands. 
llvm-svn: 55099
 2008-08-21 01:41:07 +00:00
Evan Cheng 4b5c038cd0 Type of first GEP operand is always the same as the target pointer type. 
llvm-svn: 55097
 2008-08-21 01:19:11 +00:00
Dan Gohman 6a0780cdd7 Fix unused variable warnings. 
llvm-svn: 55089
 2008-08-20 23:53:10 +00:00
Evan Cheng 864fcc198d First cut, un-optimized (and untested) fast isel lowering of GetElementPtrInst. 
llvm-svn: 55085
 2008-08-20 22:45:34 +00:00
Dan Gohman a4305cec93 Simplify the BuildMI calls even more. 
llvm-svn: 55077
 2008-08-20 21:10:53 +00:00
Dan Gohman 02c84b8910 Simplify FastISel's constructor argument list, make the FastISel 
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
Dan Gohman 07a34a5f69 Make more use of the BuildMI API. 
llvm-svn: 55072
 2008-08-20 18:16:32 +00:00
Dan Gohman 24e8f0cfe6 Minor code reorganization. 
llvm-svn: 55071
 2008-08-20 18:10:48 +00:00
Dan Gohman 2471f6ce0f Minor whitespace cleanup. 
llvm-svn: 55070
 2008-08-20 18:09:38 +00:00
Dan Gohman 39a5ffb03f Fix 80 column violation. 
llvm-svn: 55069
 2008-08-20 18:09:02 +00:00
Dan Gohman e8f9a00424 Fix FastISel to recognize that the last block in the function does 
not have a fall-through successor.

llvm-svn: 55033
 2008-08-20 01:17:01 +00:00
Dan Gohman f6884373c2 Fix FastISel to recognize unhandled operands, such as constants 
that aren't available as virtual registers (for now).

llvm-svn: 55026
 2008-08-20 00:35:17 +00:00
Dan Gohman b16a7783c5 Add FastISel support for floating-point operations. 
llvm-svn: 55021
 2008-08-20 00:23:20 +00:00
Dan Gohman a3e4d5a5e1 Add FastISel support for several more binary operators. 
llvm-svn: 55020
 2008-08-20 00:11:48 +00:00
Dan Gohman 214343fbbe Support unconditional fall-through branches in FastISel. 
llvm-svn: 55014
 2008-08-19 22:31:46 +00:00
Dan Gohman 547ce65467 Use the BuildMI overload that sets up a destination register 
instead of the one that doesn't and then adding it manually.

llvm-svn: 55006
 2008-08-19 20:46:54 +00:00
Dan Gohman c55fdcc935 Handle the case where target-specific fastisel code doesn't have 
a desired opcode.

llvm-svn: 55005
 2008-08-19 20:43:22 +00:00
Dan Gohman c44423853a Make FastISel's constructor protected, and give it a destructor. 
llvm-svn: 54793
 2008-08-14 21:51:29 +00:00
Dan Gohman 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