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Commit 4fe5ab4b authored by Ben Shi's avatar Ben Shi
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[RISCV] Optimize immediate materialisation with SH*ADD 

Use SH1ADD/SH2ADD/SH3ADD along with LUI+ADDI to compose int32*3,
int32*5 and int32*9.

Reviewed By: craig.topper, luismarques

Differential Revision: https://reviews.llvm.org/D111484
parent 81e9c906
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