gcc/testsuite/gcc.dg/rtl/aarch64/pr71779.c

   1 /* { dg-do compile { target aarch64-*-* } } */
   2 /* { dg-options "-fdump-rtl-cse1" } */
   3
   4 /* Dump taken from comment 2 of PR 71779, of
   5    "...the relevant memory access coming out of expand"
   6    hand-edited to the compact dump format.  */
   7
   8 int __RTL (startwith ("cse1")) test (int n)
   9 {
  10 (function "fragment"
  11   (param "n"
  12     (DECL_RTL (reg/v:SI <1> [ n ]))
  13     (DECL_RTL_INCOMING (reg:SI x0 [ n ]))
  14   ) ;; param "n"
  15   (insn-chain
  16     (block 2
  17       (edge-from entry (flags "FALLTHRU"))
  18       (cnote 6 [bb 2] NOTE_INSN_BASIC_BLOCK)
  19
  20 ;; MEM[(struct isl_obj *)&obj1] = &isl_obj_map_vtable;
  21 (insn 1045 (set (reg:SI <480>)
  22         (high:SI (symbol_ref:SI ("isl_obj_map_vtable")
  23                     [flags 0xc0]
  24                     <var_decl 0x7fa0363ea240 isl_obj_map_vtable>)))
  25      "y.c":12702)
  26 (insn 1046 (set (reg/f:SI <479>)
  27         (lo_sum:SI (reg:SI <480>)
  28             (symbol_ref:SI ("isl_obj_map_vtable")
  29                [flags 0xc0]
  30                <var_decl 0x7fa0363ea240 isl_obj_map_vtable>)))
  31      "y.c":12702
  32      (expr_list:REG_EQUAL (symbol_ref:SI ("isl_obj_map_vtable")
  33                              [flags 0xc0]
  34                              <var_decl 0x7fa0363ea240 isl_obj_map_vtable>)))
  35 (insn 1047 (set (reg:DI <481>)
  36         (subreg:DI (reg/f:SI <479>) 0)) "y.c":12702)
  37 (insn 1048 (set (zero_extract:DI (reg/v:DI <191> [ obj1D.17368 ])
  38             (const_int 32)
  39             (const_int 0))
  40         (reg:DI <481>)) "y.c":12702)
  41 ;; Extra insn, to avoid all of the above from being deleted by DCE
  42 (insn 1049 (set (mem:DI (reg:DI <191>) [1 i+0 S4 A32])
  43                          (const_int 1)))
  44       (edge-to exit (flags "FALLTHRU"))
  45     ) ;; block 2
  46   ) ;; insn-chain
  47 ) ;; function
  48 }
  49
  50 /* TODO: scan the dump.  */