Piyou Chen 2def1c4458 [RISCV][MCP] Remove redundant move from tail duplication (#89865) ...

Tail duplication will generate the redundant move before return. It is
because the MachineCopyPropogation can't recognize COPY after post-RA
pseudoExpand.

This patch make MachineCopyPropogation recognize `%0 = ADDI %1, 0` as
COPY

2024-08-28 08:32:54 +08:00

54 KiB

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