This option catches unexpected mismatch when a prefix is given to
FileCheck on the command line but never matches a single line in the
test.
See http://lists.llvm.org/pipermail/llvm-dev/2020-October/146162.html
for more info.
Differential D90501
Use `--allow-unused-prefixes=false` by default for FileCheck in MLIR testsuite mehdi_amini on Oct 30 2020, 2:27 PM. Authored by
Details This option catches unexpected mismatch when a prefix is given to See http://lists.llvm.org/pipermail/llvm-dev/2020-October/146162.html
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