gcc/testsuite/selftests/simple-cse.rtl

(function "test"
  (insn-chain
    (block 2
      (edge-from entry (flags "FALLTHRU"))
      (cinsn 1 (set (reg:SI <1>)
                    (plus:SI (reg:SI <0>)
                             (const_int 1))) (nil))
      (cinsn 2 (set (reg:SI <2>)
                    (plus:SI (reg:SI <0>)
                             (const_int 1))) (nil))
      (cinsn 3 (set (mem:SI (reg:SI <3>) [1 i+0 S4 A32])
                    (mult:SI (reg:SI <1>) (reg:SI <2>))) (nil))
      (edge-to exit (flags "FALLTHRU"))
    ) ;; block 2
  ) ;; insn-chain
) ;; function