llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-24 22:32:47 +00:00

History

Dan Gohman 7f460203b0 Rename ISD::LOCATION to ISD::DBG_STOPPOINT to better reflect its purpose, and give it a custom SDNode subclass so that it doesn't need to have line number, column number, filename string, and directory string, all existing as individual SDNodes to be the operands. This was the only user of ISD::STRING, StringSDNode, etc., so remove those and some associated code. This makes stop-points considerably easier to read in -view-legalize-dags output, and reduces overhead (creating new nodes and copying std::strings into them) on code containing debugging information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52924 91177308-0d34-0410-b5e6-96231b3b80d8		2008-06-30 20:59:49 +00:00
..
IA64.h
IA64.td
IA64AsmPrinter.cpp	Add CommonLinkage; currently tentative definitions	2008-05-14 20:12:51 +00:00
IA64Bundling.cpp
IA64InstrBuilder.h
IA64InstrFormats.td
IA64InstrInfo.cpp	remove MachineOpCode typedef.	2008-01-07 02:48:55 +00:00
IA64InstrInfo.h	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
IA64InstrInfo.td	Replace all target specific implicit def instructions with a target independent one: TargetInstrInfo::IMPLICIT_DEF.	2008-03-15 00:03:38 +00:00
IA64ISelDAGToDAG.cpp	Split scheduling from instruction selection.	2008-06-30 20:45:06 +00:00
IA64ISelLowering.cpp	Rename ISD::LOCATION to ISD::DBG_STOPPOINT to better reflect its	2008-06-30 20:59:49 +00:00
IA64ISelLowering.h	Replace some std::vectors that showed up in heap profiling with	2008-06-30 20:31:15 +00:00
IA64MachineFunctionInfo.h
IA64RegisterInfo.cpp	Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.	2008-03-31 20:40:39 +00:00
IA64RegisterInfo.h	Move reMaterialize() from TargetRegisterInfo to TargetInstrInfo.	2008-03-31 20:40:39 +00:00
IA64RegisterInfo.td	make sure ar.pfs is in a register class, this fixes test/CodeGen/IA64/ret-0.ll	2008-03-09 20:12:44 +00:00
IA64TargetAsmInfo.cpp
IA64TargetAsmInfo.h
IA64TargetMachine.cpp	Clean up the use of static and anonymous namespaces. This turned up	2008-05-13 00:00:25 +00:00
IA64TargetMachine.h	Change target-specific classes to use more precise static types.	2008-05-14 01:58:56 +00:00
Makefile
README	Stuff noticed while grepping code	2008-02-11 23:47:56 +00:00

README

TODO:
  - Un-bitrot ISel
  - Hook up If-Conversion a la ARM target
  - Hook up all branch analysis functions
  - Instruction scheduling
  - Bundling
  - Dynamic Optimization
  - Testing and bugfixing
  - stop passing FP args in both FP *and* integer regs when not required
  - allocate low (nonstacked) registers more aggressively
  - clean up and thoroughly test the isel patterns.
  - fix stacked register allocation order: (for readability) we don't want
    the out? registers being the first ones used
  - fix up floating point
    (nb http://gcc.gnu.org/wiki?pagename=ia64%20floating%20point )
  - bundling!
    (we will avoid the mess that is:
     http://gcc.gnu.org/ml/gcc/2003-12/msg00832.html )
  - instruction scheduling (hmmmm! ;)
  - counted loop support
  - make integer + FP mul/div more clever (we have fixed pseudocode atm)
  - track and use comparison complements

INFO:
  - we are strictly LP64 here, no support for ILP32 on HP-UX. Linux users
    don't need to worry about this.
  - i have instruction scheduling/bundling pseudocode, that really works
    (has been tested, albeit at the perl-script level).
    so, before you go write your own, send me an email!

KNOWN DEFECTS AT THE CURRENT TIME:
  - C++ vtables contain naked function pointers, not function descriptors,
  which is bad. see http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=406
  - varargs are broken
  - alloca doesn't work (indeed, stack frame layout is bogus)
  - no support for big-endian environments
  - (not really the backend, but...) the CFE has some issues on IA64.
    these will probably be fixed soon.
  
ACKNOWLEDGEMENTS:
  - Chris Lattner (x100)
  - Other LLVM developers ("hey, that looks familiar")

CONTACT:
  - You can email me at duraid@octopus.com.au. If you find a small bug,
    just email me. If you find a big bug, please file a bug report
    in bugzilla! http://llvm.cs.uiuc.edu is your one stop shop for all
    things LLVM.