<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - PHINode containing itself causes segfault in LLVM when compiling Blender OpenCL kernel with R600 backend" href="https://bugs.freedesktop.org/show_bug.cgi?id=84232#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - PHINode containing itself causes segfault in LLVM when compiling Blender OpenCL kernel with R600 backend" href="https://bugs.freedesktop.org/show_bug.cgi?id=84232">bug 84232</a> from <a class="email" href="mailto:arsenm2@gmail.com" title="Matt Arsenault <arsenm2@gmail.com>"> Matt Arsenault</a> <pre>(In reply to Vitaliy Filippov from <a href="show_bug.cgi?id=84232#c2">comment #2</a>) > > 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.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>