Igor Kirillov 839abdb0d2 [MachineLICM] Fix incorrect CSE on hoisted const load (#73007) ...

When hoisting an invariant load, we should not combine it with an
existing load through common subexpression elimination (CSE). This is
because there might be memory-changing instructions between the existing
load and the end of the block entering the loop.

Fixes https://github.com/llvm/llvm-project/issues/72855

2023-11-27 14:37:18 +00:00

59 KiB

Raw Blame History

View Raw