gcc/testsuite/gcc.dg/store_merging_28.c

   1 /* PR tree-optimization/88709 */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target store_merge } */
   4 /* { dg-options "-O2 -fno-tree-vectorize -fno-ipa-icf -fdump-tree-store-merging-details" } */
   5 /* { dg-final { scan-tree-dump-times "New sequence of \[24] stores to replace old one of 16 stores" 8 "store-merging" { target { i?86-*-* x86_64-*-* } } } } */
   6 /* { dg-final { scan-tree-dump-times "New sequence of \[24] stores to replace old one of 6 stores" 1 "store-merging" { target { ! arm*-*-* } } } } */
   7
   8 typedef struct S { char data[16]; } S;
   9 void optimize_me (S);
  10 void optimize_me3 (S, S, S);
  11
  12 void
  13 good ()
  14 {
  15   optimize_me ((S) { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 });
  16 }
  17
  18 void
  19 bad ()
  20 {
  21   optimize_me ((S) { 1, 2, 3, 4, 5 });
  22 }
  23
  24 void
  25 why ()
  26 {
  27   optimize_me ((S) { 1, 2, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 });
  28 }
  29
  30 void
  31 srsly ()
  32 {
  33   optimize_me3 ((S) { 1, 2, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  34                 (S) { 11, 12, 13, 14, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 },
  35                 (S) { 21, 22, 23, 24, 25, 20, 20, 20, 10, 20, 20, 20, 20, 20, 20 });
  36 }
  37
  38 void
  39 srsly_not_one_missing ()
  40 {
  41   optimize_me3 ((S) { 1, 2, 3, 4, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  42                 (S) { 11, 12, 13, 14, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 },
  43                 (S) { 21, 22, 23, 24, 25, 20, 20, 20, 10, 20, 20, 20, 20, 20, 20, 11 });
  44 }