Craig Topper 1b2de79ff4 [RISCV] Use two ADDIs to do some stack pointer adjustments. ...

If the adjustment doesn't fit in 12 bits, try to break it into
two 12 bit values before falling back to movImm+add/sub.

This is based on a similar idea from isel.

Reviewed By: luismarques, reames

Differential Revision: https://reviews.llvm.org/D126392

2022-05-31 10:25:28 -07:00

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