llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-08 04:07:07 +00:00

History

Dan Gohman c54baa2d43 Split foldMemoryOperand into public non-virtual and protected virtual parts, and add target-independent code to add/preserve MachineMemOperands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60488 91177308-0d34-0410-b5e6-96231b3b80d8		2008-12-03 18:43:12 +00:00
..
AsmPrinter
Alpha.h
Alpha.td	Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files.	2008-11-24 07:34:46 +00:00
AlphaBranchSelector.cpp
AlphaCodeEmitter.cpp
AlphaInstrFormats.td	Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning.	2008-12-03 18:15:48 +00:00
AlphaInstrInfo.cpp	Split foldMemoryOperand into public non-virtual and protected virtual	2008-12-03 18:43:12 +00:00
AlphaInstrInfo.h	Split foldMemoryOperand into public non-virtual and protected virtual	2008-12-03 18:43:12 +00:00
AlphaInstrInfo.td	Add a sanity-check to tablegen to catch the case where isSimpleLoad	2008-12-03 02:30:17 +00:00
AlphaISelDAGToDAG.cpp
AlphaISelLowering.cpp	There are no longer any places that require a	2008-12-01 11:41:29 +00:00
AlphaISelLowering.h	Change the interface to the type legalization method	2008-12-01 11:39:25 +00:00
AlphaJITInfo.cpp
AlphaJITInfo.h
AlphaLLRP.cpp
AlphaRegisterInfo.cpp
AlphaRegisterInfo.h
AlphaRegisterInfo.td
AlphaRelocations.h
AlphaSchedule.td
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetAsmInfo.cpp
AlphaTargetAsmInfo.h
AlphaTargetMachine.cpp
AlphaTargetMachine.h
CMakeLists.txt
Makefile
README.txt

README.txt

***

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 accross bytes of bytewise abs(i8v8 a - i8v8 b))

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

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