view gcc/testsuite/gcc.dg/tree-prof/section-attr-3.c @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
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/* Checks for a bug where static data with a section attribute within a
   function would stop the function being partitioned into hot and cold
   blocks.  */
/* { dg-require-effective-target freorder } */
/* { dg-options "-O2 -fno-profile-reorder-functions -freorder-blocks-and-partition -save-temps" } */

#define SIZE 10000

#define NOINLINE __attribute__((noinline)) __attribute__ ((noclone))

const char *sarr[SIZE];
const char *buf_hot __attribute__ ((section (".data")));
const char *buf_cold;

void foo (int path);

int
main (int argc, char *argv[])
{
  int i;
  buf_hot =  "hello";
  buf_cold = "world";
  for (i = 0; i < 1000000; i++)
    foo (argc);
  return 0;
}


void NOINLINE
foo (int path)
{
  int i;
  if (path)
    {
      for (i = 0; i < SIZE; i++)
	sarr[i] = buf_hot;
    }
  else
    {
      for (i = 0; i < SIZE; i++)
	sarr[i] = buf_cold;
    }
}

/* { dg-final-use { scan-assembler "\.section\[\t \]*\.text\.unlikely\[\\n\\r\]+\[\t \]*\.size\[\t \]*foo\.cold\.0" { target *-*-linux* *-*-gnu* } } } */