This computes a structural hash while allowing for selective ignoring of
certain operands based on a custom function that is provided. Instead of
a single hash value, it now returns FunctionHashInfo which includes a
hash value, an instruction mapping, and a map to track the operand
location and its corresponding hash value that is ignored.
Depends on https://github.com/llvm/llvm-project/pull/112621.
This is a patch for
https://discourse.llvm.org/t/rfc-global-function-merging/82608.
This patch makes structural-hash-detailed.ll look at diffs rather than
specific values to make the test more robust against the underlying
hashing implementation while still testing that the hash value is
deterministic across multiple runs.
Reviewed By: aeubanks
Differential Revision: https://reviews.llvm.org/D159154
This patch adds in a StructuralHash printer pass that prints out the
hexadeicmal representation of the hash of a module and all of the
functions within it.
Reviewed By: aeubanks
Differential Revision: https://reviews.llvm.org/D158317
