tree 00eef938bda5aeee63a4835d7f9e2b2e17bd5b36
parent cb82de29601745d6c4beaf51ee1dbd1bf7acc186
author Ben Shi <powerman1st@163.com> 1594173262 -0700
committer Fangrui Song <maskray@google.com> 1594173448 -0700

[RISCV] optimize addition with a pair of (addi imm)

For an addition with an immediate in specific ranges, a pair of
addi-addi can be generated instead of the ordinary lui-addi-add serial.

Reviewed By: MaskRay, luismarques

Differential Revision: https://reviews.llvm.org/D82262