Florian Hahn c4a78b6fe3 [SimplifyCFG] Always allow hoisting if all instructions match. (#97158) ...

Generalize hoistCommonCodeFromSuccessors's `EqTermsOnly` to
`AllInstsEqOnly` and always allow hoisting if all instructions match.

In that case, all instructions can be hoisted and the
original branch will be replaced and selects for PHIs are added. This
allows preserving metadata in more cases, using the existing hoisting
logic, whereas previously FoldTwoEntryPHINode would drop the metadata.


https://llvm-compile-time-tracker.com/compare.php?from=716360367fbdabac2c374c19b8746f4de49a5599&to=986b2c47df516b31d998c055400e4f62aa76edc6&stat=instructions:u

PR: https://github.com/llvm/llvm-project/pull/97158

2024-12-13 21:26:27 +00:00

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