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# laf-intel instrumentation
## Usage
By default the passes will not run when you compile programs using
afl-clang-fast. Hence, you can use AFL as usual.
To enable the passes you must set environment variables before you
compile the target project.
The following options exist:
`export AFL_LLVM_LAF_SPLIT_SWITCHES=1`
Enables the split-switches pass.
`export AFL_LLVM_LAF_TRANSFORM_COMPARES=1`
Enables the transform-compares pass (strcmp, memcmp, strncmp, strcasecmp, strncasecmp).
`export AFL_LLVM_LAF_SPLIT_COMPARES=1`
Enables the split-compares pass.
By default it will split all compares with a bit width <= 64 bits.
You can change this behaviour by setting `export AFL_LLVM_LAF_SPLIT_COMPARES_BITW=<bit_width>`.
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