llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-21 00:32:23 +00:00

History

Dale Johannesen aafce77b17 Add CommonLinkage; currently tentative definitions are represented as "weak", but there are subtle differences in some cases on Darwin, so we need both. The intent is that "common" will behave identically to "weak" unless somebody changes their target to do something else. No functional change as yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51118 91177308-0d34-0410-b5e6-96231b3b80d8		2008-05-14 20:12:51 +00:00
..
Alpha.h	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
Alpha.td
AlphaAsmPrinter.cpp	Add CommonLinkage; currently tentative definitions	2008-05-14 20:12:51 +00:00
AlphaBranchSelector.cpp
AlphaCodeEmitter.cpp	Unbreak JIT. Ignore TargetInstrInfo::IMPLICIT_DEF.	2008-03-17 06:56:52 +00:00
AlphaInstrFormats.td
AlphaInstrInfo.cpp	Fix "Control reaches the end of non-void function" warnings,	2008-03-30 18:22:13 +00:00
AlphaInstrInfo.h	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
AlphaInstrInfo.td
AlphaISelDAGToDAG.cpp	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
AlphaISelLowering.cpp	Drop ISD::MEMSET, ISD::MEMMOVE, and ISD::MEMCPY, which are not Legal	2008-04-12 04:36:06 +00:00
AlphaISelLowering.h
AlphaJITInfo.cpp	Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function	2008-04-16 20:46:05 +00:00
AlphaJITInfo.h	Correlate stubs with functions in JIT: when emitting a stub, the JIT tells the memory manager which function	2008-04-16 20:46:05 +00:00
AlphaLLRP.cpp
AlphaRegisterInfo.cpp	Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.	2008-03-31 20:40:39 +00:00
AlphaRegisterInfo.h	Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.	2008-03-31 20:40:39 +00:00
AlphaRegisterInfo.td
AlphaRelocations.h
AlphaSchedule.td
AlphaSubtarget.cpp
AlphaSubtarget.h
AlphaTargetAsmInfo.cpp
AlphaTargetAsmInfo.h
AlphaTargetMachine.cpp	Clean up the use of static and anonymous namespaces. This turned up	2008-05-13 00:00:25 +00:00
AlphaTargetMachine.h	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
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