llvm-project

cc8c941e - [VPlan] Convert EVL loops to variable-length stepping after dissolution (#147222)

[VPlan] Convert EVL loops to variable-length stepping after dissolution (#147222) Loop regions require fixed-length steps and rounded-up trip counts, but after dissolution creates explicit control flow, EVL loops can leverage variable-length stepping with original trip counts. This patch adds a post-dissolution transform pass to convert EVL loops from fixed-length to variable-length stepping .