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For example:

  movb a0, a0
  srai $1, a0, a0

the assembler will expand to:

  slli $56, a0, a0
  srai $56, a0, a0
  srai $1, a0, a0

this CL optimize to:

  slli $56, a0, a0
  srai $57, a0, a0

Remove 270+ instructions from Go binary on linux/riscv64.

Change-Id: I375e19f9d3bd54f2781791d8cbe5970191297dc8
Reviewed-by: Keith Randall <>
Run-TryBot: Wayne Zuo <>
Reviewed-by: Joel Sing <>
Reviewed-by: Cherry Mui <>
TryBot-Result: Gopher Robot <>


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The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at There is a mirror of the repository at

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

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