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5 Commits

Author SHA1 Message Date
Benjamin Kramer
9fa59e7643 [mlir] Use C++17 structured bindings instead of std::tie where applicable. NFCI 2022-08-09 13:34:17 +02:00
Krzysztof Drewniak
938fe9f277 [mlir][Arith] Fix up integer range inference for truncation 
Attempting to apply the range analysis to real code revealed that
trunci wasn't correctly handling the case where truncation would
create wider ranges - for example, if we truncate [255, 257] : i16 to
i8, the result can be 255, 0, or 1, which isn't a contiguous range of
values.

The previous implementation would naively map this to [255, 1], which
would cause issues with unsigned ranges and unification.

Reviewed By: Mogball

Differential Revision: https://reviews.llvm.org/D130501
 2022-08-01 19:29:53 +00:00
Kazu Hirata
037f09959a [mlir] Don't use Optional::hasValue (NFC) 2022-06-20 11:22:37 -07:00
Benjamin Kramer
d3b1796842 [mlir] Try to work around ambiguity in older clang versions 
mlir/lib/Dialect/Arithmetic/IR/InferIntRangeInterfaceImpls.cpp:366:10: error: chosen constructor is explicit in copy-initialization
  return {leftVal, rightVal};
         ^~~~~~~~~~~~~~~~~~~
 2022-06-14 23:57:57 +02:00
Krzysztof Drewniak
75bfc6f295 [mlir][Arith] Implement InferIntRangeInterface for arithmetic ops 
Depends on D124023

Reviewed By: Mogball, rriddle

Differential Revision: https://reviews.llvm.org/D124022
 2022-06-14 18:30:34 +00:00