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johnson
2017 Apr 24
3
Debugging UNREACHABLE "Couldn't join subrange" in RegisterCoalescer (out-of-tree backend)
...8r:0) 0 at 112r 1 at 96r L00000030 [208r,288r:1) 0 at x 1 at 208r L00000001 [96r,288r:0) 0 at 96r
Copy+Merge 00000030 into 00000020
Reduce Lane to 00000010
conflict at %vreg34:1 at 240r
*** Couldn't join subrange!
UNREACHABLE executed at /d/en/johnsoni-0/gctools/llvm/lib/CodeGen/RegisterCoalescer.cpp:2693!
#0 0x00000000027395af llvm::sys::PrintStackTrace(llvm::raw_ostream&) /d/en/johnsoni-0/gctools/llvm/lib/Support/Unix/Signals.inc:402:0
#1 0x0000000002739971 PrintStackTraceSignalHandler(void*) /d/en/johnsoni-0/gctools/llvm/lib/Support/Unix/S...