The operand info passed to getCmpSelInstrCost for Select instructions
was using operands 0 and 1 (condition and true value), but the API
expects info about the data operands (true and false values). For
selects, the data operands are at indices 1 and 2, not 0 and 1.
This led to the cost model receiving the condition's operand info
instead of the false arm's, potentially producing inaccurate cost
estimates.
Reviewers: bababuck, hiraditya, RKSimon
Pull Request: https://github.com/llvm/llvm-project/pull/188506
1cb9a78b5a