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UCB-BAR fork of LLVM! NOT UPSTREAM RISCV LLVM
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-barrier gets registered twice #37

Closed meister-reservoir closed 8 years ago

meister-reservoir commented 8 years ago

Repro: commit a65ba4c27920cc85c27cd9b8a10e6942ab07bf41 configured with --enable-shared --enable-optimized REQUIRES_RTTI=1 I'm using a private version of POCL, which calls llvm with a certain set of options to compile a 'kernel.cl' file.

Two passes with the same argument (-barriers) attempted to be registered! UNREACHABLE executed at /home/meister/dec/pca/runtime/riscv/riscv-llvm/include/llvm/IR/LegacyPassNameParser.h:74! make: *\ [kernel.rv.S] Aborted (core dumped)

Looking at PassManagerBuilder.cpp, there are paths with which this module pass gets registered twice.

meister-reservoir commented 8 years ago

While what I said above sill holds, it is the 'barriers' pass that gets registered twice, as opposed to 'barrier'. The issue may be in the caller (POCL).

meister-reservoir commented 8 years ago

Actually there is no issue adding a pass several times in PassManagerBuilder. So this is an invalid bug.