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History

Jakob Stoklund Olesen d89900e14c Use set operations instead of plain lists to enumerate register classes. This simplifies many of the target description files since it is common for register classes to be related or contain sequences of numbered registers. I have verified that this doesn't change the files generated by TableGen for ARM and X86. It alters the allocation order of MBlaze GPR and Mips FGR32 registers, but I believe the change is benign. llvm-svn: 133105		2011-06-15 23:28:14 +00:00
..
TargetInfo
Alpha.h	First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place	2010-11-15 00:06:54 +00:00
Alpha.td	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
AlphaAsmPrinter.cpp	move all the target's asmprinters into the main target. The piece	2010-11-14 18:43:56 +00:00
AlphaBranchSelector.cpp
AlphaCallingConv.td
AlphaFrameLowering.cpp	Teach frame lowering to ignore debug values after the terminators.	2011-01-13 21:28:52 +00:00
AlphaFrameLowering.h	Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.	2011-01-10 12:39:04 +00:00
AlphaInstrFormats.td
AlphaInstrInfo.cpp
AlphaInstrInfo.h
AlphaInstrInfo.td	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +00:00
AlphaISelDAGToDAG.cpp	rename MVT::Flag to MVT::Glue. "Flag" is a terrible name for	2010-12-21 02:38:05 +00:00
AlphaISelLowering.cpp	Add a parameter to CCState so that it can access the MachineFunction.	2011-06-08 23:55:35 +00:00
AlphaISelLowering.h	Make the logic for determining function alignment more explicit. No functionality change.	2011-05-06 20:34:06 +00:00
AlphaLLRP.cpp
AlphaMachineFunctionInfo.h
AlphaMCAsmInfo.cpp
AlphaMCAsmInfo.h
AlphaRegisterInfo.cpp	Use the dwarf->llvm mapping to print register names in the cfi	2011-05-30 20:20:15 +00:00
AlphaRegisterInfo.h	Use the dwarf->llvm mapping to print register names in the cfi	2011-05-30 20:20:15 +00:00
AlphaRegisterInfo.td	Use set operations instead of plain lists to enumerate register classes.	2011-06-15 23:28:14 +00:00
AlphaRelocations.h
AlphaSchedule.td
AlphaSelectionDAGInfo.cpp
AlphaSelectionDAGInfo.h
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetMachine.cpp	Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.	2011-01-10 12:39:04 +00:00
AlphaTargetMachine.h	Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.	2011-01-10 12:39:04 +00:00
CMakeLists.txt	Use explicit add_subdirectory's for LLVM target sublibraries instead	2011-02-20 02:55:27 +00:00
Makefile	move all the target's asmprinters into the main target. The piece	2010-11-14 18:43:56 +00:00
README.txt	Fix a ton of comment typos found by codespell. Patch by	2011-04-15 05:18:47 +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 across bytes of bytewise abs(i8v8 a - i8v8 b))

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

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