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llvm-project/llvm/lib/Target/Alpha
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Eli Friedman 30a49e93e3 New approach to r136737: insert the necessary fences for atomic ops in platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing. 
I think this completes the basic CodeGen for atomicrmw and cmpxchg.

llvm-svn: 136813
 		2011-08-03 21:06:02 +00:00
..
MCTargetDesc Rewrite the CMake build to use explicit dependencies between libraries, 2011-07-29 00:14:25 +00:00
TargetInfo Rewrite the CMake build to use explicit dependencies between libraries, 2011-07-29 00:14:25 +00:00
Alpha.h Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +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 Reapply r110396, with fixes to appease the Linux buildbot gods. 2010-08-06 18:33:48 +00:00
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
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
AlphaISelDAGToDAG.cpp rename MVT::Flag to MVT::Glue. "Flag" is a terrible name for 2010-12-21 02:38:05 +00:00
AlphaISelLowering.cpp New approach to r136737: insert the necessary fences for atomic ops in platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing. 2011-08-03 21:06:02 +00:00
AlphaISelLowering.h Move Alpha from getRegClassForInlineAsmConstraint to 2011-06-29 19:40:01 +00:00
AlphaInstrFormats.td Remove isTwoAddress from Alpha. 2010-06-21 18:48:55 +00:00
AlphaInstrInfo.cpp Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +00:00
AlphaInstrInfo.h Hide the call to InitMCInstrInfo into tblgen generated ctor. 2011-07-01 17:57:27 +00:00
AlphaInstrInfo.td Code generation for 'fence' instruction. 2011-07-27 22:21:52 +00:00
AlphaLLRP.cpp Reapply r110396, with fixes to appease the Linux buildbot gods. 2010-08-06 18:33:48 +00:00
AlphaMachineFunctionInfo.h Move per-function state out of TargetLowering subclasses and into 2010-04-17 14:41:14 +00:00
AlphaRegisterInfo.cpp Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for 2011-07-18 22:29:13 +00:00
AlphaRegisterInfo.h Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down 2011-07-18 20:57:22 +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 Add support to model pipeline bypass / forwarding. 2010-09-28 23:50:49 +00:00
AlphaSelectionDAGInfo.cpp Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
AlphaSelectionDAGInfo.h Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
AlphaSubtarget.cpp Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +00:00
AlphaSubtarget.h Compute feature bits at time of MCSubtargetInfo initialization. 2011-07-07 07:07:08 +00:00
AlphaTargetMachine.cpp - Move CodeModel from a TargetMachine global option to MCCodeGenInfo. 2011-07-20 07:51:56 +00:00
AlphaTargetMachine.h - Move CodeModel from a TargetMachine global option to MCCodeGenInfo. 2011-07-20 07:51:56 +00:00
CMakeLists.txt Rewrite the CMake build to use explicit dependencies between libraries, 2011-07-29 00:14:25 +00:00
Makefile Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +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