package codegen

import "runtime"

// Check small copies are replaced with moves.

func movesmall4() {
	x := [...]byte{1, 2, 3, 4}
	// 386:-".*memmove"
	// amd64:-".*memmove"
	// arm:-".*memmove"
	// arm64:-".*memmove"
	// ppc64x:-".*memmove"
	copy(x[1:], x[:])
}

func movesmall7() {
	x := [...]byte{1, 2, 3, 4, 5, 6, 7}
	// 386:-".*memmove"
	// amd64:-".*memmove"
	// arm64:-".*memmove"

  // amd64:"ADDQ\t\\$3"
  // amd64:`ADDQ\t\$3`

and they'll match this assembly line:

  ADDQ	$3

Negative matches can be specified using a - before the quoted regexp.
For example:

  func MoveSmall() {
  	   x := [...]byte{1, 2, 3, 4, 5, 6, 7}
  	   copy(x[1:], x[:]) // arm64:-".*memmove"
  }

verifies that NO memmove call is present in the assembly generated for
the copy() line.