llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-24 06:30:19 +00:00

History

John Criswell e644ef7b09 Convert .cvsignore files git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37801 91177308-0d34-0410-b5e6-96231b3b80d8		2007-06-29 16:35:07 +00:00
..
Alpha.h	Add all that branch mangling niftiness	2006-10-31 16:49:55 +00:00
Alpha.td	For PR1336:	2007-04-16 14:06:19 +00:00
AlphaAsmPrinter.cpp	Removed tabs everywhere except autogenerated & external files. Add make	2007-04-16 18:10:23 +00:00
AlphaBranchSelector.cpp	Drop 'const'	2007-05-03 01:11:54 +00:00
AlphaCodeEmitter.cpp	Drop 'const'	2007-05-03 01:11:54 +00:00
AlphaInstrFormats.td	Use this nifty Constraints thing and fix the inverted conditional moves	2007-04-17 04:07:59 +00:00
AlphaInstrInfo.cpp	Handle blocks with 2 unconditional branches in AnalyzeBranch.	2007-06-13 17:59:52 +00:00
AlphaInstrInfo.h	RemoveBranch() and InsertBranch() now returns number of instructions deleted / inserted.	2007-05-18 00:05:48 +00:00
AlphaInstrInfo.td	Use this nifty Constraints thing and fix the inverted conditional moves	2007-04-17 04:07:59 +00:00
AlphaISelDAGToDAG.cpp	Move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits from	2007-06-22 14:59:07 +00:00
AlphaISelLowering.cpp	Removed tabs everywhere except autogenerated & external files. Add make	2007-04-16 18:10:23 +00:00
AlphaISelLowering.h	switch TargetLowering::getConstraintType to take the entire constraint,	2007-03-25 02:14:49 +00:00
AlphaJITInfo.cpp	What should be the last unnecessary <iostream>s in the library.	2006-12-07 22:21:48 +00:00
AlphaJITInfo.h	Completely rearchitect the interface between targets and the pass manager.	2006-09-04 04:14:57 +00:00
AlphaLLRP.cpp	Drop 'const'	2007-05-03 01:11:54 +00:00
AlphaRegisterInfo.cpp	eliminateFrameIndex() change.	2007-05-01 09:13:03 +00:00
AlphaRegisterInfo.h	eliminateFrameIndex() change.	2007-05-01 09:13:03 +00:00
AlphaRegisterInfo.td	Constify some methods. Patch provided by Anton Vayvod, thanks!	2006-08-17 22:00:08 +00:00
AlphaRelocations.h	Patches to make the LLVM sources more -pedantic clean. Patch provided	2006-05-24 17:04:05 +00:00
AlphaSchedule.td
AlphaSubtarget.cpp	FTOIT and ITOFT are bit converts, and if we drop 21264s, are always available	2007-01-24 21:09:16 +00:00
AlphaSubtarget.h	FTOIT and ITOFT are bit converts, and if we drop 21264s, are always available	2007-01-24 21:09:16 +00:00
AlphaTargetAsmInfo.cpp	Simplify a bit	2006-12-07 23:55:55 +00:00
AlphaTargetAsmInfo.h	Break out target asm info into separate files.	2006-09-07 22:05:02 +00:00
AlphaTargetMachine.cpp	Added new method to add a "simple" code emitter. That is, to only add	2007-02-08 01:38:33 +00:00
AlphaTargetMachine.h	Added new method to add a "simple" code emitter. That is, to only add	2007-02-08 01:38:33 +00:00
Makefile
README.txt	Readme	2007-03-31 15:05:44 +00:00

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