llvm-project/llvm/lib/Target/MSP430
Craig Topper 54bfde79db Make MCInstrInfo available to the MCInstPrinter. This will be used to remove getInstructionName and the static data it contains since the same tables are already in MCInstrInfo.
llvm-svn: 153860
2012-04-02 06:09:36 +00:00
..
InstPrinter Make MCInstrInfo available to the MCInstPrinter. This will be used to remove getInstructionName and the static data it contains since the same tables are already in MCInstrInfo. 2012-04-02 06:09:36 +00:00
MCTargetDesc Make MCInstrInfo available to the MCInstPrinter. This will be used to remove getInstructionName and the static data it contains since the same tables are already in MCInstrInfo. 2012-04-02 06:09:36 +00:00
TargetInfo LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
CMakeLists.txt Fix up the CMake build for the new files added in r146960, they're 2011-12-20 08:42:11 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
MSP430.h Next round of MC refactoring. This patch factor MC table instantiations, MC 2011-07-14 20:59:42 +00:00
MSP430.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430AsmPrinter.cpp Convert assert(0) to llvm_unreachable 2012-02-07 02:50:20 +00:00
MSP430BranchSelector.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430CallingConv.td
MSP430FrameLowering.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430FrameLowering.h Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 2011-01-10 12:39:04 +00:00
MSP430ISelDAGToDAG.cpp fix a long standing wart: all the ComplexPattern's were being 2010-09-21 20:31:19 +00:00
MSP430ISelLowering.cpp Re-commit r151623 with fix. Only issue special no-return calls if it's a direct call. 2012-02-28 18:51:51 +00:00
MSP430ISelLowering.h Re-commit r151623 with fix. Only issue special no-return calls if it's a direct call. 2012-02-28 18:51:51 +00:00
MSP430InstrFormats.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430InstrInfo.cpp Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430InstrInfo.h Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430InstrInfo.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430MCInstLower.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430MCInstLower.h Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430MachineFunctionInfo.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430MachineFunctionInfo.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
MSP430RegisterInfo.cpp Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430RegisterInfo.h Use uint16_t to store registers in callee saved register tables to reduce size of static data. 2012-03-04 03:33:22 +00:00
MSP430RegisterInfo.td Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430SelectionDAGInfo.cpp Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
MSP430SelectionDAGInfo.h Implement a bunch more TargetSelectionDAGInfo infrastructure. 2010-05-11 17:31:57 +00:00
MSP430Subtarget.cpp Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +00:00
MSP430Subtarget.h Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430TargetMachine.cpp Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 2012-03-17 18:46:09 +00:00
MSP430TargetMachine.h Emacs-tag and some comment fix for all ARM, CellSPU, Hexagon, MBlaze, MSP430, PPC, PTX, Sparc, X86, XCore. 2012-02-18 12:03:15 +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

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.