[PATCH] D82262: [RISCV] Optimize addition with an immediate

[Ben Shi via Phabricator via llvm-commits]

benshi001 added a comment.

for (add i32 %a, 4094), it can be simplfied to
addi a0, a0, 2047
addi a0, a0, 2047.

The original assembly is
lui a1, 1
addi a1, a1, -2
add a0, a0, a1

However, this optimization can only be performed if the value generated by lui-addi has no other use.


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