gcc/testsuite/gcc.dg/tree-ssa/phi-opt-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -ffinite-math-only -fno-signed-zeros -fdump-tree-phiopt" } */
   3
   4 float repl1 (float varx)
   5 {
   6   if (varx < 0.0)
   7     return 0.0;
   8   else if (varx > 1.0)
   9     return 1.0;
  10   else
  11     return varx;
  12 }
  13
  14 /* Should be turned to
  15
  16    varx_4 = MIN_EXPR <1.0e+0, varx_2>;
  17    varx_5 = MAX_EXPR <varx_4, 0.0>;  */
  18
  19 /* phiopt1 was confused by predictors.  */
  20 /* { dg-final { scan-tree-dump "varx.*MIN_EXPR.*1\\.0" "phiopt1" } } */
  21 /* { dg-final { scan-tree-dump "varx.*MAX_EXPR.*0\\.0" "phiopt1" } } */
  22 /* { dg-final { scan-tree-dump "varx.*MIN_EXPR.*1\\.0" "phiopt2"} } */
  23 /* { dg-final { scan-tree-dump "varx.*MAX_EXPR.*0\\.0" "phiopt2"} } */
  24
  25 float repl2 (float vary)
  26 {
  27   if (vary > 1.0)
  28     return 1.0;
  29   else if (vary < 0.0)
  30     return 0.0;
  31   else
  32     return vary;
  33 }
  34
  35 /* Should be turned to
  36
  37    vary_4 = MAX_EXPR <0.0, vary_2>;
  38    vary_5 = MIN_EXPR <vary_4, 1.0e+0>;  */
  39
  40 /* phiopt1 confused by predictors.  */
  41 /* { dg-final { scan-tree-dump "vary.*MAX_EXPR.*0\\.0" "phiopt1" } } */
  42 /* { dg-final { scan-tree-dump "vary.*MIN_EXPR.*1\\.0" "phiopt1" } } */
  43 /* { dg-final { scan-tree-dump "vary.*MAX_EXPR.*0\\.0" "phiopt2"} } */
  44 /* { dg-final { scan-tree-dump "vary.*MIN_EXPR.*1\\.0" "phiopt2"} } */
  45
  46 float repl3 (float varz, float vara, float varb)
  47 {
  48   if (varz > vara)
  49     return vara;
  50   else if (varz < varb)
  51     return varb;
  52   else
  53     return varz;
  54 }
  55
  56 /* Should be turned to
  57
  58   if (varz_2 > vara_3) goto <L4>; else goto <L1>;
  59
  60 <L1>:;
  61   vara_6 = MAX_EXPR <varb_5, varz_2>;  */
  62
  63 /* phiopt1 confused by predictors.  */
  64 /* { dg-final { scan-tree-dump "vara.*MAX_EXPR" "phiopt1" } } */
  65 /* { dg-final { scan-tree-dump "if .*varz" "phiopt2"} } */
  66 /* { dg-final { scan-tree-dump "vara.*MAX_EXPR" "phiopt2"} } */