[llvm] [llvm][InstCombine] bitcast bfloat half castpair bug (PR #79832)

[David Green via llvm-commits]

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+; RUN: opt -S %s | FileCheck %s
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davemgreen wrote:

You probably want to add -passes=instcombine and generating the check lines with the update_test_checks.py script would be good. It keep the tests more standard and maintainable.

https://github.com/llvm/llvm-project/pull/79832