gcc/testsuite/gcc.dg/pr46309.c

   1 /* PR tree-optimization/46309 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-reassoc-details" } */
   4 /* The transformation depends on BRANCH_COST being greater than 1
   5    (see the notes in the PR), so try to force that.  */
   6 /* { dg-additional-options "-mtune=octeon2" { target mips*-*-* } } */
   7 /* { dg-additional-options "-mbranch-cost=2" { target avr*-*-* s390*-*-* } } */
   8
   9 int
  10 f1 (int a)
  11 {
  12   int v1 = (a == 3);
  13   int v2 = (a == 1);
  14   int v3 = (a == 4);
  15   int v4 = (a == 2);
  16   return v1 || v2 || v3 || v4;
  17 }
  18
  19 int
  20 f2 (int a)
  21 {
  22   int v1 = (a == 1);
  23   int v2 = (a == 2);
  24   int v3 = (a == 3);
  25   int v4 = (a == 4);
  26   return v1 || v2 || v3 || v4;
  27 }
  28
  29 int
  30 f3 (int a)
  31 {
  32   int v1 = (a == 3);
  33   int v2 = (a == 1);
  34   return v1 || v2;
  35 }
  36
  37 int
  38 f4 (int a)
  39 {
  40   int v1 = (a == 1);
  41   int v2 = (a == 2);
  42   return v1 || v2;
  43 }
  44
  45 int
  46 f5 (unsigned int a)
  47 {
  48   int v1 = (a <= 31);
  49   int v2 = (a >= 64 && a <= 95);
  50   return v1 || v2;
  51 }
  52
  53 int
  54 f6 (unsigned int a)
  55 {
  56   int v1 = (a <= 31);
  57   int v2 = (a >= 64 && a <= 95);
  58   int v3 = (a >= 128 && a <= 159);
  59   int v4 = (a >= 192 && a <= 223);
  60   return v1 || v2 || v3 || v4;
  61 }
  62
  63 /* { dg-final { scan-tree-dump-times "Optimizing range tests a_\[0-9\]*.D. -.1, 1. and -.2, 2. and -.3, 3. and -.4, 4.\[\n\r\]* into" 2 "reassoc1" } } */
  64 /* { dg-final { scan-tree-dump-times "Optimizing range tests a_\[0-9\]*.D. -.1, 1. and -.3, 3.\[\n\r\]* into" 1 "reassoc1" } } */
  65 /* { dg-final { scan-tree-dump-times "Optimizing range tests a_\[0-9\]*.D. -.1, 1. and -.2, 2.\[\n\r\]* into" 1 "reassoc1" } } */
  66 /* { dg-final { scan-tree-dump-times "Optimizing range tests a_\[0-9\]*.D. -.0, 31. and -.64, 95.\[\n\r\]* into" 2 "reassoc1" } } */
  67 /* { dg-final { scan-tree-dump-times "Optimizing range tests a_\[0-9\]*.D. -.128, 159. and -.192, 223.\[\n\r\]* into" 1 "reassoc1" } } */
  68 /* { dg-final { scan-tree-dump-times "Optimizing range tests \[^\r\n\]*_\[0-9\]* -.0, 31. and -.128, 159.\[\n\r\]* into" 1 "reassoc2" } } */
  69 /* { dg-final { cleanup-tree-dump "reassoc1" } } */
  70 /* { dg-final { cleanup-tree-dump "reassoc2" } } */