llvm-6502/lib/Target/MSP430
Nick Lewycky 6fc1adf9c7 Fix typo "fuction" noticed in comments in AssumptionCache.h, and also all the other files that have the same typo. All comments, no functionality change! (Merely a "fuctionality" change.)
Bonus change to remove emacs major mode marker from SystemZMachineFunctionInfo.cpp because emacs already knows it's C++ from the extension. Also fix typo "appeary" in AMDGPUMCAsmInfo.h.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243585 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-29 22:32:47 +00:00
..
InstPrinter Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MCTargetDesc MC: Remove MCSubtargetInfo() default constructor 2015-07-10 22:43:42 +00:00
TargetInfo
CMakeLists.txt Remove getDataLayout() from TargetSelectionDAGInfo (had no users) 2015-07-09 02:10:08 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +00:00
MSP430.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MSP430.td Change the default of AsmWriterClassName and isMCAsmWriter. 2013-12-02 04:55:42 +00:00
MSP430AsmPrinter.cpp MC: Add target hook to control symbol quoting 2015-06-09 00:31:39 +00:00
MSP430BranchSelector.cpp Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MSP430CallingConv.td
MSP430FrameLowering.cpp [ShrinkWrap] Add (a simplified version) of shrink-wrapping. 2015-05-05 17:38:16 +00:00
MSP430FrameLowering.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MSP430InstrFormats.td
MSP430InstrInfo.cpp [CodeGen] ArrayRef'ize cond/pred in various TII APIs. NFC. 2015-06-11 19:30:37 +00:00
MSP430InstrInfo.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MSP430InstrInfo.td Replace neverHasSideEffects=1 with hasSideEffects=0 in all .td files. 2014-11-26 00:46:26 +00:00
MSP430ISelDAGToDAG.cpp Make TargetLowering::getPointerTy() taking DataLayout as an argument 2015-07-09 02:09:04 +00:00
MSP430ISelLowering.cpp Make TargetLowering::getPointerTy() taking DataLayout as an argument 2015-07-09 02:09:04 +00:00
MSP430ISelLowering.h Re-instate the EVT parameter to getScalarShiftAmountTy() for OOT user 2015-07-09 15:12:23 +00:00
MSP430MachineFunctionInfo.cpp Fix typo "fuction" noticed in comments in AssumptionCache.h, and also all the other files that have the same typo. All comments, no functionality change! (Merely a "fuctionality" change.) 2015-07-29 22:32:47 +00:00
MSP430MachineFunctionInfo.h Fix typo "fuction" noticed in comments in AssumptionCache.h, and also all the other files that have the same typo. All comments, no functionality change! (Merely a "fuctionality" change.) 2015-07-29 22:32:47 +00:00
MSP430MCInstLower.cpp Move most user of TargetMachine::getDataLayout to the Module one 2015-07-16 06:11:10 +00:00
MSP430MCInstLower.h Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC) 2015-06-23 09:49:53 +00:00
MSP430RegisterInfo.cpp Target RegisterInfo: devirtualize TargetFrameLowering 2015-07-10 18:13:17 +00:00
MSP430RegisterInfo.h Have getCalleeSavedRegs take a non-null MachineFunction all the 2015-03-11 21:41:28 +00:00
MSP430RegisterInfo.td
MSP430Subtarget.cpp Remove getDataLayout() from TargetSelectionDAGInfo (had no users) 2015-07-09 02:10:08 +00:00
MSP430Subtarget.h Remove getDataLayout() from TargetSelectionDAGInfo (had no users) 2015-07-09 02:10:08 +00:00
MSP430TargetMachine.cpp Replace string GNU Triples with llvm::Triple in TargetMachine. NFC. 2015-06-11 19:41:26 +00:00
MSP430TargetMachine.h Replace string GNU Triples with llvm::Triple in TargetMachine. NFC. 2015-06-11 19:41:26 +00:00
README.txt

//===---------------------------------------------------------------------===//
// MSP430 backend.
//===---------------------------------------------------------------------===//

DISCLAIMER: Thid backend should be considered as highly experimental. I never
seen nor worked with this MCU, all information was gathered from datasheet
only. The original intention of making this backend was to write documentation
of form "How to write backend for dummies" :) Thes notes hopefully will be
available pretty soon.

Some things are incomplete / not implemented yet (this list surely is not
complete as well):

1. Verify, how stuff is handling implicit zext with 8 bit operands (this might
be modelled currently in improper way - should we need to mark the superreg as
def for every 8 bit instruction?).

2. Libcalls: multiplication, division, remainder. Note, that calling convention
for libcalls is incomptible with calling convention of libcalls of msp430-gcc
(these cannot be used though due to license restriction).

3. Implement multiplication / division by constant (dag combiner hook?).

4. Implement non-constant shifts.

5. Implement varargs stuff.

6. Verify and fix (if needed) how's stuff playing with i32 / i64.

7. Implement floating point stuff (softfp?)

8. Implement instruction encoding for (possible) direct code emission in the
future.

9. Since almost all instructions set flags - implement brcond / select in better
way (currently they emit explicit comparison).

10. Handle imm in comparisons in better way (see comment in MSP430InstrInfo.td)

11. Implement hooks for better memory op folding, etc.