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b8158acc23
additional bug fixes: 1. The bug that everyone hit was a problem in the asmprinter where it would remove $stub but keep the L prefix on a name when emitting the indirect symbol. This is easy to fix by keeping the name of the stub and the name of the symbol in a StringMap instead of just keeping a StringSet and trying to reconstruct it late. 2. There was a problem printing the personality function. The current logic to print out the personality function from the DWARF information is a bit of a cesspool right now that duplicates a bunch of other logic in the asm printer. The short version of it is that it depends on emitting both the L and _ prefix for symbols (at least on darwin) and until I can untangle it, it is best to switch the mangler back to emitting both prefixes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75646 91177308-0d34-0410-b5e6-96231b3b80d8 |
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| .. | ||
| CMakeLists.txt | ||
| Makefile | ||
| MSP430.h | ||
| MSP430.td | ||
| MSP430AsmPrinter.cpp | ||
| MSP430CallingConv.td | ||
| MSP430InstrFormats.td | ||
| MSP430InstrInfo.cpp | ||
| MSP430InstrInfo.h | ||
| MSP430InstrInfo.td | ||
| MSP430ISelDAGToDAG.cpp | ||
| MSP430ISelLowering.cpp | ||
| MSP430ISelLowering.h | ||
| MSP430MachineFunctionInfo.h | ||
| MSP430RegisterInfo.cpp | ||
| MSP430RegisterInfo.h | ||
| MSP430RegisterInfo.td | ||
| MSP430Subtarget.cpp | ||
| MSP430Subtarget.h | ||
| MSP430TargetAsmInfo.cpp | ||
| MSP430TargetAsmInfo.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): 0. Implement asmprinting for variables :) 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.