llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-19 01:13:25 +00:00

History

Bill Wendling b4202b84d7 Update comments to make it clear that the function alignment is the Log2 of the bytes and not bytes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74624 91177308-0d34-0410-b5e6-96231b3b80d8		2009-07-01 18:50:55 +00:00
..
AsmPrinter	Remove unused AsmPrinter OptLevel argument, and propogate.	2009-07-01 01:48:54 +00:00
Alpha.h	Remove unused AsmPrinter OptLevel argument, and propogate.	2009-07-01 01:48:54 +00:00
Alpha.td
AlphaBranchSelector.cpp
AlphaCodeEmitter.cpp	Fix new CodeEmitter stuff to follow LLVM codying style. Patch by Aaron Gray	2009-06-01 19:57:37 +00:00
AlphaInstrFormats.td
AlphaInstrInfo.cpp	Handle IMPLICIT_DEF with isUndef operand marker, part 2. This patch moves the code to annotate machineoperands to LiveIntervalAnalysis. It also add markers for implicit_def that define physical registers. The rest, is just a lot of details.	2009-07-01 01:59:31 +00:00
AlphaInstrInfo.h	Convert Alpha and Mips to use a MachineFunctionInfo subclass to	2009-06-03 20:30:14 +00:00
AlphaInstrInfo.td	Add an int64_t variant of abs, for host environments	2009-05-13 00:24:22 +00:00
AlphaISelDAGToDAG.cpp	Convert Alpha and Mips to use a MachineFunctionInfo subclass to	2009-06-03 20:30:14 +00:00
AlphaISelLowering.cpp	Update comments to make it clear that the function alignment is the Log2 of the	2009-07-01 18:50:55 +00:00
AlphaISelLowering.h	Update comments to make it clear that the function alignment is the Log2 of the	2009-07-01 18:50:55 +00:00
AlphaJITInfo.cpp	Privatize this map.	2009-06-25 18:13:04 +00:00
AlphaJITInfo.h	Privatize this map.	2009-06-25 18:13:04 +00:00
AlphaLLRP.cpp	Remove non-DebugLoc versions of BuildMI from Alpha and Cell.	2009-02-13 02:30:42 +00:00
AlphaMachineFunctionInfo.h	Add explicit keywords.	2009-06-05 23:05:51 +00:00
AlphaRegisterInfo.cpp	Committed the wrong version in my last commit.	2009-06-26 00:17:05 +00:00
AlphaRegisterInfo.h	Committed the wrong version in my last commit.	2009-06-26 00:17:05 +00:00
AlphaRegisterInfo.td
AlphaRelocations.h
AlphaSchedule.td
AlphaSubtarget.cpp
AlphaSubtarget.h	Propagate CPU string out of SubtargetFeatures	2009-05-23 19:50:50 +00:00
AlphaTargetAsmInfo.cpp	Alpha always requires global relocations to be r/w regardless of PIC.	2009-03-29 17:14:14 +00:00
AlphaTargetAsmInfo.h	Alpha always requires global relocations to be r/w regardless of PIC.	2009-03-29 17:14:14 +00:00
AlphaTargetMachine.cpp	Remove unused AsmPrinter OptLevel argument, and propogate.	2009-07-01 01:48:54 +00:00
AlphaTargetMachine.h	Remove unused AsmPrinter OptLevel argument, and propogate.	2009-07-01 01:48:54 +00:00
CMakeLists.txt
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
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