We decide to make this choice as they are issue to crate tensor of custom integer type in python.
+ we don't do the integer extension before convert to the concrete CAPI that requires i64
LLVM errors should be handled/consumed. Creating a new one and leaving
the previous one alive will crash the compiler. Whenever we don't want a
crash (e.g. logging the error is enough), but still wanna continue the
execution, we can just consume it.
This replaces the default FHE circuit constrains (maximum encrypted
integer width of 7 bits and a Minimal Arithmetic Noise Padding of 10
with the results of the `MaxMANP` pass, which determines these values
automatically from the input program.
Since the maximum encrypted integer width and the maximum value for
the Minimal Arithmetic Noise Padding can only be derived from HLFHE
operations, the circuit constraints are determined automatically by
`zamacompiler` only if the option `--entry-dialect=hlfhe` was
specified.
For lower-level dialects, `zamacompiler` has been provided with the
options `--assume-max-eint-precision=...` and `--assume-max-manp=...`
that allow a user to specify the values for the maximum required
precision and maximum values for the Minimal Arithmetic Noise Padding.
This adds tests for the Minimal Arithmetic Noise Padding analysis pass
that is invoked with --debug-manp, testing both elementary operations
and DAGs of computations on encrypted integers.
This refactoring commit restructures the compilation pipeline of
`zamacompiler`, such that it is possible to enter and exit the
pipeline at different points, effectively defining the level of
abstraction at the input and the required level of abstraction for the
output.
The entry point is specified using the `--entry-dialect`
argument. Valid choices are:
`--entry-dialect=hlfhe`: Source contains HLFHE operations
`--entry-dialect=midlfhe`: Source contains MidLFHE operations
`--entry-dialect=lowlfhe`: Source contains LowLFHE operations
`--entry-dialect=std`: Source does not contain any FHE Operations
`--entry-dialect=llvm`: Source is in LLVM dialect
The exit point is defined by an action, specified using --action.
`--action=roundtrip`:
Parse the source file to in-memory representation and immediately
dump as text without any processing
`--action=dump-midlfhe`:
Lower source to MidLFHE and dump result as text
`--action=dump-lowlfhe`:
Lower source to LowLFHE and dump result as text
`--action=dump-std`:
Lower source to only standard MLIR dialects (i.e., all FHE
operations have already been lowered)
`--action=dump-llvm-dialect`:
Lower source to MLIR's LLVM dialect (i.e., the LLVM dialect, not
LLVM IR)
`--action=dump-llvm-ir`:
Lower source to plain LLVM IR (i.e., not the LLVM dialect, but
actual LLVM IR)
`--action=dump-optimized-llvm-ir`:
Lower source to plain LLVM IR (i.e., not the LLVM dialect, but
actual LLVM IR), pass the result through the LLVM optimizer and
print the result.
`--action=dump-jit-invoke`:
Execute the full lowering pipeline to optimized LLVM IR, JIT
compile the result, invoke the function specified in
`--jit-funcname` with the parameters from `--jit-args` and print
the functions return value.
output size of keyswiting wasn't set properly. As this information must
come from the selected parameters, it should goes down from the MidLFHE
to the appropriate call to ciphertext allocation
This changes the semantics of `HLFHE.dot_eint_int` from memref-based
reference semantics to tensor-based value semantics. The former:
"HLFHE.dot_eint_int"(%arg0, %arg1, %arg2) :
(memref<Nx!HLFHE.eint<0>>, memref<Nxi32>, memref<!HLFHE.eint<0>>) -> ()
becomes:
"HLFHE.dot_eint_int"(%arg0, %arg1) :
(tensor<Nx!HLFHE.eint<0>>, tensor<Nxi32>) -> !HLFHE.eint<0>
As a side effect, data-flow analyses become much easier. With the
previous memref type of the plaintext argument it is difficult to
check whether the plaintext values are statically defined constants or
originate from a memory region changed at execution time (e.g., for
analyses evaluating the impact on noise). Changing the plaintext type
from `memref` to `vector` makes such analyses significantly easier.
