llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-28 17:27:55 +00:00

History

Owen Anderson 718cb665ca Add lengthof and endof templates that hide a lot of sizeof computations. Patch by Sterling Stein! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41758 91177308-0d34-0410-b5e6-96231b3b80d8		2007-09-07 04:06:50 +00:00
..
Alpha.h
Alpha.td
AlphaAsmPrinter.cpp	Don't ignore the return value of AsmPrinter::doInitialization and	2007-07-25 19:33:14 +00:00
AlphaBranchSelector.cpp
AlphaCodeEmitter.cpp
AlphaInstrFormats.td
AlphaInstrInfo.cpp	Add lengthof and endof templates that hide a lot of sizeof computations.	2007-09-07 04:06:50 +00:00
AlphaInstrInfo.h
AlphaInstrInfo.td
AlphaISelDAGToDAG.cpp	Enhance APFloat to retain bits of NaNs (fixes oggenc).	2007-08-31 04:03:46 +00:00
AlphaISelLowering.cpp	Change LegalFPImmediates to use APFloat.	2007-08-30 00:23:21 +00:00
AlphaISelLowering.h	More explicit keywords.	2007-08-02 21:21:54 +00:00
AlphaJITInfo.cpp
AlphaJITInfo.h
AlphaLLRP.cpp
AlphaRegisterInfo.cpp
AlphaRegisterInfo.h	Add a variant of foldMemoryOperand to fold any load / store, not just load / store from / to stack slots.	2007-08-30 05:52:20 +00:00
AlphaRegisterInfo.td
AlphaRelocations.h
AlphaSchedule.td
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetAsmInfo.cpp
AlphaTargetAsmInfo.h
AlphaTargetMachine.cpp	long double patch 2 of N. Handle it in TargetData.	2007-08-03 20:20:50 +00:00
AlphaTargetMachine.h
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