current master fails llvm assertions

[vtjnash]

jameson@julia:~/julia$ make cleanall && make
    JULIA usr/lib/julia/sys.ji
utf8.jl
julia-release-readline: /home/jameson/julia/deps/llvm-3.2/lib/CodeGen/LiveVariables.cpp:114: void llvm::LiveVariables::MarkVirtRegAliveInBlock(llvm::LiveVariables::VarInfo&, llvm::MachineBasicBlock*, llvm::MachineBasicBlock*, std::vector<llvm::MachineBasicBlock*>&): Assertion `MBB != &MF->front() && "Can't find reaching def for virtreg"' failed.
Stack dump:
0.  Running pass 'Live Variable Analysis' on function '@julia_typeinf'
Aborted (core dumped)
*** This error is usually fixed by running 'make clean'. If the error persists, try 'make cleanall'. ***
jameson@julia:~/julia$ 

(for bisection purposes, db3cf81 was a good commit fbf3ed8 was bad)

[staticfloat]

Thanks, Jeff!

[peirongf]

gaussian5x5_generator: llvm-4.0.0.src/lib/CodeGen/LiveVariables.cpp:114: void llvm::LiveVariables::MarkVirtRegAliveInBlock(llvm::LiveVariables::VarInfo&, llvm::MachineBasicBlock*, llvm::MachineBasicBlock*, std::vectorllvm::MachineBasicBlock*&): Assertion `MBB != &MF->front() && "Can't find reaching def for virtreg"' failed.

I am using LLVM 4.0 to build Halide with tag: release_2017_05_03.
Failed with above error.
Any ideas?