[LLVMdev] mblaze backend: unreachable executed

[Josef Spjut]

> what does "refuses to compile" mean?  I.e. what error do you get?
> 
Specifically I get this message when compiling with the default -mattr:


Call result #2 has unhandled type i32
UNREACHABLE executed at CallingConvLower.cpp:162!
0  llc               0x0000000100a1e115 PrintStackTrace(void*) + 38
1  llc               0x0000000100a1e6d0 SignalHandler(int) + 254
2  libSystem.B.dylib 0x00007fff82adf67a _sigtramp + 26
3  llc               0x000000010053233c llvm::SmallVectorImpl<unsigned int>::push_back(unsigned int const&) + 104
4  llc               0x000000010002d3d3 raise + 27
5  llc               0x000000010002d3e3 abort + 14
6  llc               0x0000000100a0a9e3 llvm::report_fatal_error(llvm::Twine const&) + 0
7  llc               0x00000001005df5f3 llvm::CCState::AnalyzeCallResult(llvm::SmallVectorImpl<llvm::ISD::InputArg> const&, bool (*)(unsigned int, llvm::MVT, llvm::MVT, llvm::CCValAssign::LocInfo, llvm::ISD::ArgFlagsTy, llvm::CCState&)) + 261
8  llc               0x00000001000b62ac llvm::MBlazeTargetLowering::LowerCallResult(llvm::SDValue, llvm::SDValue, llvm::CallingConv::ID, bool, llvm::SmallVectorImpl<llvm::ISD::InputArg> const&, llvm::DebugLoc, llvm::SelectionDAG&, llvm::SmallVectorImpl<llvm::SDValue>&) const + 166
9  llc               0x00000001000b72c6 llvm::MBlazeTargetLowering::LowerCall(llvm::SDValue, llvm::SDValue, llvm::CallingConv::ID, bool, bool&, llvm::SmallVectorImpl<llvm::ISD::OutputArg> const&, llvm::SmallVectorImpl<llvm::SDValue> const&, llvm::SmallVectorImpl<llvm::ISD::InputArg> const&, llvm::DebugLoc, llvm::SelectionDAG&, llvm::SmallVectorImpl<llvm::SDValue>&) const + 3640
10 llc               0x00000001004fffe8 llvm::TargetLowering::LowerCallTo(llvm::SDValue, llvm::Type const*, bool, bool, bool, bool, unsigned int, llvm::CallingConv::ID, bool, bool, llvm::SDValue, std::vector<llvm::TargetLowering::ArgListEntry, std::allocator<llvm::TargetLowering::ArgListEntry> >&, llvm::SelectionDAG&, llvm::DebugLoc) const + 2058
11 llc               0x000000010050733a llvm::SelectionDAGBuilder::LowerCallTo(llvm::ImmutableCallSite, llvm::SDValue, bool, llvm::MachineBasicBlock*) + 2470
12 llc               0x0000000100519d01 llvm::SelectionDAGBuilder::visitCall(llvm::CallInst const&) + 4381
13 llc               0x0000000100522bc4 llvm::SelectionDAGBuilder::visit(unsigned int, llvm::User const&) + 1220
14 llc               0x00000001005286c9 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) + 105
15 llc               0x000000010054067f llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction const>, llvm::ilist_iterator<llvm::Instruction const>, bool&) + 59
16 llc               0x0000000100541088 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 2396
17 llc               0x0000000100541730 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 762
18 llc               0x000000010064e051 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 85
19 llc               0x000000010095f6ea llvm::FPPassManager::runOnFunction(llvm::Function&) + 350
20 llc               0x000000010095f8bd llvm::FPPassManager::runOnModule(llvm::Module&) + 81
21 llc               0x000000010095f3ba llvm::MPPassManager::runOnModule(llvm::Module&) + 384
22 llc               0x0000000100960b6b llvm::PassManagerImpl::run(llvm::Module&) + 111
23 llc               0x0000000100960bcd llvm::PassManager::run(llvm::Module&) + 33
24 llc               0x000000010003073f main + 2305
25 llc               0x000000010002f824 start + 52

and Illegal Instruction returned to my shell.

When I enable FPU the type changes to f32 but the rest of the error is the same.

Josef