llvm-6502/lib/Target/Alpha
Evan Cheng 59ee62d241 - Eliminate MCCodeEmitter's dependency on TargetMachine. It now uses MCInstrInfo
and MCSubtargetInfo.
- Added methods to update subtarget features (used when targets automatically
  detect subtarget features or switch modes).
- Teach X86Subtarget to update MCSubtargetInfo features bits since the
  MCSubtargetInfo layer can be shared with other modules.
- These fixes .code 16 / .code 32 support since mode switch is updated in
  MCSubtargetInfo so MC code emitter can do the right thing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134884 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-11 03:57:24 +00:00
..
TargetInfo
Alpha.h Merge XXXGenRegisterNames.inc into XXXGenRegisterInfo.inc 2011-06-28 20:07:07 +00:00
Alpha.td Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
AlphaAsmPrinter.cpp
AlphaBranchSelector.cpp
AlphaCallingConv.td
AlphaFrameLowering.cpp Teach frame lowering to ignore debug values after the terminators. 2011-01-13 21:28:52 +00:00
AlphaFrameLowering.h Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 2011-01-10 12:39:04 +00:00
AlphaInstrFormats.td
AlphaInstrInfo.cpp - Eliminate MCCodeEmitter's dependency on TargetMachine. It now uses MCInstrInfo 2011-07-11 03:57:24 +00:00
AlphaInstrInfo.h Hide the call to InitMCInstrInfo into tblgen generated ctor. 2011-07-01 17:57:27 +00:00
AlphaInstrInfo.td Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
AlphaISelDAGToDAG.cpp
AlphaISelLowering.cpp Add an intrinsic and codegen support for fused multiply-accumulate. The intent 2011-07-08 21:39:21 +00:00
AlphaISelLowering.h Move Alpha from getRegClassForInlineAsmConstraint to 2011-06-29 19:40:01 +00:00
AlphaLLRP.cpp
AlphaMachineFunctionInfo.h
AlphaMCAsmInfo.cpp
AlphaMCAsmInfo.h
AlphaRegisterInfo.cpp Move CallFrameSetupOpcode and CallFrameDestroyOpcode to TargetInstrInfo. 2011-06-28 21:14:33 +00:00
AlphaRegisterInfo.h Merge XXXGenRegisterDesc.inc XXXGenRegisterNames.inc XXXGenRegisterInfo.h.inc 2011-06-27 18:32:37 +00:00
AlphaRegisterInfo.td Use set operations instead of plain lists to enumerate register classes. 2011-06-15 23:28:14 +00:00
AlphaRelocations.h
AlphaSchedule.td
AlphaSelectionDAGInfo.cpp
AlphaSelectionDAGInfo.h
AlphaSubtarget.cpp - Eliminate MCCodeEmitter's dependency on TargetMachine. It now uses MCInstrInfo 2011-07-11 03:57:24 +00:00
AlphaSubtarget.h Compute feature bits at time of MCSubtargetInfo initialization. 2011-07-07 07:07:08 +00:00
AlphaTargetMachine.cpp Eliminate asm parser's dependency on TargetMachine: 2011-07-08 01:53:10 +00:00
AlphaTargetMachine.h Fix the ridiculous SubtargetFeatures API where it implicitly expects CPU name to 2011-06-30 01:53:36 +00:00
CMakeLists.txt Rename XXXGenSubtarget.inc to XXXGenSubtargetInfo.inc for consistency. 2011-07-01 22:36:09 +00:00
Makefile Rename XXXGenSubtarget.inc to XXXGenSubtargetInfo.inc for consistency. 2011-07-01 22:36:09 +00:00
README.txt Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00

***

add gcc builtins for alpha instructions


***

custom expand byteswap into nifty 
extract/insert/mask byte/word/longword/quadword low/high
sequences

***

see if any of the extract/insert/mask operations can be added

***

match more interesting things for cmovlbc cmovlbs (move if low bit clear/set)

***

lower srem and urem

remq(i,j):  i - (j * divq(i,j)) if j != 0
remqu(i,j): i - (j * divqu(i,j)) if j != 0
reml(i,j):  i - (j * divl(i,j)) if j != 0
remlu(i,j): i - (j * divlu(i,j)) if j != 0

***

add crazy vector instructions (MVI):

(MIN|MAX)(U|S)(B8|W4) min and max, signed and unsigned, byte and word
PKWB, UNPKBW pack/unpack word to byte
PKLB UNPKBL pack/unpack long to byte
PERR pixel error (sum across bytes of bytewise abs(i8v8 a - i8v8 b))

cmpbytes bytewise cmpeq of i8v8 a and i8v8 b (not part of MVI extensions)

this has some good examples for other operations that can be synthesised well 
from these rather meager vector ops (such as saturating add).
http://www.alphalinux.org/docs/MVI-full.html