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llvm-6502/lib/Target/IA64
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Tilmann Scheller 6b61cd185e Add NumFixedArgs attribute to CallSDNode which indicates the number of fixed arguments in a vararg call. 
With the SVR4 ABI on PowerPC, vector arguments for vararg calls are passed differently depending on whether they are a fixed or a variable argument. Variable vector arguments always go into memory, fixed vector arguments are put 
into vector registers. If there are no free vector registers available, fixed vector arguments are put on the stack.

The NumFixedArgs attribute allows to decide for an argument in a vararg call whether it belongs to the fixed or variable portion of the parameter list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74764 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03 06:44:53 +00:00
..
AsmPrinter Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00
CMakeLists.txt CMake build fixes, from Xerxes Ranby 2009-07-02 18:53:52 +00:00
IA64.h Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00
IA64.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
IA64Bundling.cpp Remove non-DebugLoc versions of BuildMI from IA64, Mips. 2009-02-13 02:34:39 +00:00
IA64InstrBuilder.h Fix constant pool loads, and remove broken versions of addConstantPoolReference. 2008-09-06 01:11:01 +00:00
IA64InstrFormats.td Remove attribution from file headers, per discussion on llvmdev. 2007-12-29 20:36:04 +00:00
IA64InstrInfo.cpp Change MachineInstrBuilder::addReg() to take a flag instead of a list of 2009-05-13 21:33:08 +00:00
IA64InstrInfo.h Change TargetInstrInfo::isMoveInstr to return source and destination sub-register indices as well. 2009-01-20 19:12:24 +00:00
IA64InstrInfo.td Rename isSimpleLoad to canFoldAsLoad, to better reflect its meaning. 2008-12-03 18:15:48 +00:00
IA64ISelDAGToDAG.cpp Get rid of one more non-DebugLoc getNode and 2009-02-06 01:31:28 +00:00
IA64ISelLowering.cpp Add NumFixedArgs attribute to CallSDNode which indicates the number of fixed arguments in a vararg call. 2009-07-03 06:44:53 +00:00
IA64ISelLowering.h Add NumFixedArgs attribute to CallSDNode which indicates the number of fixed arguments in a vararg call. 2009-07-03 06:44:53 +00:00
IA64MachineFunctionInfo.h Add explicit keywords. 2009-06-05 23:05:51 +00:00
IA64RegisterInfo.cpp Propagate debug loc info through prologue/epilogue. 2009-02-23 00:42:30 +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
IA64Subtarget.cpp Give IA64 a TargetSubtarget subclass, so that it can 2009-01-16 22:49:36 +00:00
IA64Subtarget.h Give IA64 a TargetSubtarget subclass, so that it can 2009-01-16 22:49:36 +00:00
IA64TargetAsmInfo.cpp IA64 is as weird as Alpha wrt r/o relocs :) 2009-03-29 17:14:35 +00:00
IA64TargetAsmInfo.h IA64 is as weird as Alpha wrt r/o relocs :) 2009-03-29 17:14:35 +00:00
IA64TargetMachine.cpp Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00
IA64TargetMachine.h Remove unused AsmPrinter OptLevel argument, and propogate. 2009-07-01 01:48:54 +00:00
Makefile Move IA64 asmprinter to separate library 2009-04-03 10:38:51 +00:00
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.