[PATCH] D44416: [InstCombine] [NFC] Add tests for peeking through unsigned FP casts for zero-equality compares (PR36682)

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 138345.
lebedev.ri added a comment.

Reduced amounts of test patterns, while improving test coverage:

- one single input type - `i32`
- still three sizes it's cast to - `half`/`i16`, `float`/`i32`, `double`/`i64` - so we do have cast/upcast/downcast cases
- scalar, vector case with `undef` element, and added vector //without// `undef` Since the `<i32 0, i32 0>` is canonicalized to `zeroinitializer`, i did not add explicit test with `zeroinitializer`.

I could selectively manually prune some more testcases, if needed.


Repository:
  rL LLVM

https://reviews.llvm.org/D44416

Files:
  test/Transforms/InstCombine/cast-unsigned-icmp-eqcmp-0.ll

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