llc fails to lower from SPIR to HSAIL/BRIG

[el1goluj]

In kernel.cl.promote.bc, there is one load atomic instruction trigger this error:
%15 = load atomic i32 addrspace(1)* %11 seq_cst, align 4, !mem.scope !9

%15 is not used anywhere in the function so it shall be optimized away, but for some reason current HSAIL Compiler will crash.

Command
clamp-hsatools kernel.cl.promote.bc kernel.cl

Error message
/home/el1goluj/cppamp/build/lib/clamp-hsatools kernel.cl.promote.bc kernel.cl
llc: /home/amd/Perforce/praghave_msdnkv69_2767/drivers/opencl/compiler/llvm/include/llvm/CodeGen/MachineInstr.h:250: const llvm::MachineOperand& llvm::MachineInstr::getOperand(unsigned int) const: Assertion `i < getNumOperands() && "getOperand() out of range!"' failed.
0 llc 0x00000000012ea0ff
1 llc 0x00000000012e9df8
2 libpthread.so.0 0x00007fb13dd48340
3 libc.so.6 0x00007fb13d17ef89 gsignal + 57
4 libc.so.6 0x00007fb13d182398 abort + 328
5 libc.so.6 0x00007fb13d177e46
6 libc.so.6 0x00007fb13d177ef2
7 llc 0x00000000008d4fa5
8 llc 0x0000000000e0c4cf
9 llc 0x0000000000e0bd63
10 llc 0x0000000000e0a38c
11 llc 0x0000000000df936b llvm::MachineFunctionPass::runOnFunction(llvm::Function&) + 95
12 llc 0x00000000011fa8b1 llvm::FPPassManager::runOnFunction(llvm::Function&) + 289
13 llc 0x00000000011faa70 llvm::FPPassManager::runOnModule(llvm::Module&) + 102
14 llc 0x00000000011fad69 llvm::MPPassManager::runOnModule(llvm::Module&) + 395
15 llc 0x00000000011fb2cc llvm::PassManagerImpl::run(llvm::Module&) + 120
16 llc 0x00000000011fb4ad llvm::PassManager::run(llvm::Module&) + 39
17 llc 0x00000000008a9fb3 main + 4398
18 libc.so.6 0x00007fb13d169ec5 __libc_start_main + 245
19 llc 0x00000000008a8837
Stack dump:
0. Program arguments: /opt/amd/bin/llc -O2 -march=hsail-64 -o kernel.cl.promote.bc.brig kernel.cl.promote.bc.opt.bc

1. Running pass 'Function Pass Manager' on module 'kernel.cl.promote.bc.opt.bc'.
2. Running pass 'Machine Loop Invariant Code Motion' on function '@ZZ4mainEN3_EC__119__cxxamp_trampolineE_0PiPNSt3__16atomicIiEE'
   /home/el1goluj/cppamp/build/lib/clamp-hsatools: línea 16: 5246 Abortado (`core' generado) $LLVM_BIN/llc -O2 -march=hsail-64 -o $1.brig $1.opt.bc
   Error 2 (No such file or directory) opening "kernel.cl.promote.bc.brig"