gnu/dist/gcc4/gcc/testsuite/gcc.dg/tree-ssa/flatten-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options -O2 } */
   3
   4 /* Basic tests for flatten attribute, check we end up
   5    with only the flattened function bodies.  */
   6
   7 static int foobar(int i);
   8 static int bar(int i);
   9
  10 int __attribute__((flatten)) leaf0a(int i)
  11 {
  12   return bar(i);
  13 }
  14 int __attribute__((flatten)) leaf0b(int i)
  15 {
  16   return foobar(i);
  17 }
  18 int __attribute__((flatten)) leaf1(int i)
  19 {
  20   return bar(foobar(i));
  21 }
  22 int __attribute__((flatten)) leaf2(int i)
  23 {
  24   int j;
  25   j = foobar(i);
  26   return bar(j);
  27 }
  28
  29 static int foobar(int i)
  30 {
  31   return i-1;
  32 }
  33 static int bar(int i)
  34 {
  35   return i + foobar(i);
  36 }
  37
  38
  39 static int gloobar(int i)
  40 {
  41   return i*5+1;
  42 }
  43 static int floobar(int i)
  44 {
  45   return gloobar(i);
  46 }
  47 int __attribute__((flatten)) leaf3(int i)
  48 {
  49   int j;
  50   j = floobar(i);
  51   j += floobar(i);
  52   return j;
  53 }
  54
  55 /* { dg-final { scan-assembler-not "bar\[: \t\n\]" } } */