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Coverage instrumentation has an optimization not to instrument extra blocks, if the pass is already "accounted for" by a successor/predecessor basic block. However (https://github.com/google/sanitizers/issues/783) this reasoning may become circular, which stops valid paths from having coverage. In the worst case this can cause fuzzing to stop working entirely. This change simplifies logic to something which trivially can not have such circular reasoning, as losing valid paths does not seem like a good trade-off for a ~15% decrease in the # of instrumented basic blocks. llvm-svn: 303698 |
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lib | ||
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utils | ||
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CMakeLists.txt | ||
CODE_OWNERS.TXT | ||
configure | ||
CREDITS.TXT | ||
LICENSE.TXT | ||
llvm.spec.in | ||
LLVMBuild.txt | ||
README.txt | ||
RELEASE_TESTERS.TXT |
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