llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-15 04:30:12 +00:00

History

Anton Korobeynikov 928eb49cae Make processor FUs unique for given itinerary. This extends the limit of 32 FU per CPU arch to 32 per intinerary allowing precise modelling of quite complex pipelines in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101754 91177308-0d34-0410-b5e6-96231b3b80d8		2010-04-18 20:31:01 +00:00
..
AsmPrinter	prune some #includes.	2010-04-05 04:04:10 +00:00
TargetInfo	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00
Alpha.h	eliminate all the dead addSimpleCodeEmitter implementations.	2010-02-02 21:31:47 +00:00
Alpha.td	Replace TSFlagsFields and TSFlagsShifts with a simpler TSFlags field.	2010-04-05 03:10:20 +00:00
AlphaBranchSelector.cpp
AlphaCallingConv.td	Fix PR6444, note still doesn't compile libgcc2 all the way, but fixes that error. May not fix it in an ABI complient way. It wasn't clear what gcc does	2010-03-03 20:15:31 +00:00
AlphaCodeEmitter.cpp	Add const qualifiers to CodeGen's use of LLVM IR constructs.	2010-04-15 01:51:59 +00:00
AlphaInstrFormats.td	use ins/outs.	2010-03-18 20:55:18 +00:00
AlphaInstrInfo.cpp	use DebugLoc default ctor instead of DebugLoc::getUnknownLoc()	2010-04-02 20:16:16 +00:00
AlphaInstrInfo.h
AlphaInstrInfo.td	use ins/outs.	2010-03-18 20:55:18 +00:00
AlphaISelDAGToDAG.cpp	Use const qualifiers with TargetLowering. This eliminates several	2010-04-17 15:26:15 +00:00
AlphaISelLowering.cpp	Use const qualifiers with TargetLowering. This eliminates several	2010-04-17 15:26:15 +00:00
AlphaISelLowering.h	Use const qualifiers with TargetLowering. This eliminates several	2010-04-17 15:26:15 +00:00
AlphaJITInfo.cpp
AlphaJITInfo.h
AlphaLLRP.cpp	use DebugLoc default ctor instead of DebugLoc::getUnknownLoc()	2010-04-02 20:16:16 +00:00
AlphaMachineFunctionInfo.h	Move per-function state out of TargetLowering subclasses and into	2010-04-17 14:41:14 +00:00
AlphaMCAsmInfo.cpp	Eliminate SetDirective, and replace it with HasSetDirective.	2010-01-26 20:40:54 +00:00
AlphaMCAsmInfo.h
AlphaRegisterInfo.cpp	Delete now-unnecessary const_casts.	2010-04-17 15:32:28 +00:00
AlphaRegisterInfo.h	Change the Value argument to eliminateFrameIndex to a type-tagged value. This	2010-03-09 21:45:49 +00:00
AlphaRegisterInfo.td
AlphaRelocations.h
AlphaSchedule.td	Make processor FUs unique for given itinerary. This extends the limit of 32	2010-04-18 20:31:01 +00:00
AlphaSelectionDAGInfo.cpp	Add skeleton target-specific SelectionDAGInfo files.	2010-04-16 23:04:22 +00:00
AlphaSelectionDAGInfo.h	Add skeleton target-specific SelectionDAGInfo files.	2010-04-16 23:04:22 +00:00
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetMachine.cpp	eliminate all the dead addSimpleCodeEmitter implementations.	2010-02-02 21:31:47 +00:00
AlphaTargetMachine.h	Use const qualifiers with TargetLowering. This eliminates several	2010-04-17 15:26:15 +00:00
CMakeLists.txt	Add skeleton target-specific SelectionDAGInfo files.	2010-04-16 23:04:22 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +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