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llvm-6502/lib/Target/Alpha
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Bill Wendling 98a366d547 Instead of passing in an unsigned value for the optimization level, use an enum, 
which better identifies what the optimization is doing. And is more flexible for
future uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70440 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-29 23:29:43 +00:00
..
AsmPrinter Instead of passing in an unsigned value for the optimization level, use an enum, 2009-04-29 23:29:43 +00:00
Alpha.h Instead of passing in an unsigned value for the optimization level, use an enum, 2009-04-29 23:29:43 +00:00
Alpha.td Move target independent td files from lib/Target/ to include/llvm/Target so they can be distributed along with the header files. 2008-11-24 07:34:46 +00:00
AlphaBranchSelector.cpp Tidy up several unbeseeming casts from pointer to intptr_t. 2008-09-04 17:05:41 +00:00
AlphaCodeEmitter.cpp Switch the MachineOperand accessors back to the short names like 2008-10-03 15:45:36 +00:00
AlphaInstrFormats.td Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning. 2008-12-03 18:15:48 +00:00
AlphaInstrInfo.cpp Factor out the code to add a MachineOperand to a MachineInstrBuilder. 2009-02-18 05:45:50 +00:00
AlphaInstrInfo.h Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty 2009-02-09 07:14:22 +00:00
AlphaInstrInfo.td Add support to tablegen for naming the nodes themselves, not just the operands, 2009-03-19 05:21:56 +00:00
AlphaISelDAGToDAG.cpp Remove non-DebugLoc forms of CopyToReg and CopyFromReg. 2009-02-04 23:02:30 +00:00
AlphaISelLowering.cpp Remove non-DebugLoc versions of BuildMI from Alpha and Cell. 2009-02-13 02:30:42 +00:00
AlphaISelLowering.h Constify TargetInstrInfo::EmitInstrWithCustomInserter, allowing 2009-02-07 16:15:20 +00:00
AlphaJITInfo.cpp Rename startFunctionStub to startGVStub since it's also used for GV non-lazy ptr. 2008-11-08 08:02:53 +00:00
AlphaJITInfo.h Trim #includes. 2008-08-05 15:32:23 +00:00
AlphaLLRP.cpp Remove non-DebugLoc versions of BuildMI from Alpha and Cell. 2009-02-13 02:30:42 +00:00
AlphaRegisterInfo.cpp Propagate debug loc info through prologue/epilogue. 2009-02-23 00:42:30 +00:00
AlphaRegisterInfo.h Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo. 2008-03-31 20:40:39 +00:00
AlphaRegisterInfo.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
AlphaRelocations.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
AlphaSchedule.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
AlphaSubtarget.cpp Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
AlphaSubtarget.h Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +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 Instead of passing in an unsigned value for the optimization level, use an enum, 2009-04-29 23:29:43 +00:00
AlphaTargetMachine.h Instead of passing in an unsigned value for the optimization level, use an enum, 2009-04-29 23:29:43 +00:00
CMakeLists.txt CMake: corrected split of Alpha and Sparc AsmPrinters. 2008-11-11 17:10:13 +00:00
Makefile Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
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