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specified in the same file that the library itself is created. This is more idiomatic for CMake builds, and also allows us to correctly specify dependencies that are missed due to bugs in the GenLibDeps perl script, or change from compiler to compiler. On Linux, this returns CMake to a place where it can relably rebuild several targets of LLVM. I have tried not to change the dependencies from the ones in the current auto-generated file. The only places I've really diverged are in places where I was seeing link failures, and added a dependency. The goal of this patch is not to start changing the dependencies, merely to move them into the correct location, and an explicit form that we can control and change when necessary. This also removes a serialization point in the build because we don't have to scan all the libraries before we begin building various tools. We no longer have a step of the build that regenerates a file inside the source tree. A few other associated cleanups fall out of this. This isn't really finished yet though. After talking to dgregor he urged switching to a single CMake macro to construct libraries with both sources and dependencies in the arguments. Migrating from the two macros to that style will be a follow-up patch. Also, llvm-config is still generated with GenLibDeps.pl, which means it still has slightly buggy dependencies. The internal CMake 'llvm-config-like' macro uses the correct explicitly specified dependencies however. A future patch will switch llvm-config generation (when using CMake) to be based on these deps as well. This may well break Windows. I'm getting a machine set up now to dig into any failures there. If anyone can chime in with problems they see or ideas of how to solve them for Windows, much appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136433 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
InstPrinter | ||
MCTargetDesc | ||
TargetInfo | ||
CMakeLists.txt | ||
Makefile | ||
MSP430.h | ||
MSP430.td | ||
MSP430AsmPrinter.cpp | ||
MSP430BranchSelector.cpp | ||
MSP430CallingConv.td | ||
MSP430FrameLowering.cpp | ||
MSP430FrameLowering.h | ||
MSP430InstrFormats.td | ||
MSP430InstrInfo.cpp | ||
MSP430InstrInfo.h | ||
MSP430InstrInfo.td | ||
MSP430ISelDAGToDAG.cpp | ||
MSP430ISelLowering.cpp | ||
MSP430ISelLowering.h | ||
MSP430MachineFunctionInfo.h | ||
MSP430MCInstLower.cpp | ||
MSP430MCInstLower.h | ||
MSP430RegisterInfo.cpp | ||
MSP430RegisterInfo.h | ||
MSP430RegisterInfo.td | ||
MSP430SelectionDAGInfo.cpp | ||
MSP430SelectionDAGInfo.h | ||
MSP430Subtarget.cpp | ||
MSP430Subtarget.h | ||
MSP430TargetMachine.cpp | ||
MSP430TargetMachine.h | ||
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.