Comment # 3
on bug 84232
from Matt Arsenault
(In reply to Vitaliy Filippov from comment #2) > > Unhandled loop condition! > UNREACHABLE executed at > /var/home/vitali/setup/llvm-toolchain-3.5-3.5/lib/Target/R600/ > SIAnnotateControlFlow.cpp:259! > > This is probably related to bugpoint replacing the branch conditions with > constants, which makes conditional branches effectively unconditional :) and > SIAnnotateControlFlow::handleLoopCondition also doesn't handle this case. > > Looks like an easy to fix problem? The StructurizeCFG pass can actually create branches on constants, although it shouldn't, which I've seen several times before. I've had a partial fix for SIAnnotateControlFlow handling branches on constants for a while, but I've been putting off fixing it until the less noticeable StructurizeCFG problem is fixed.
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