view gcc/testsuite/gcc.dg/tree-ssa/loop-18.c @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
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/* A test for # of iterations estimation.  We know that I does not overflow,
   thus we can perform strength reduction (even though the 32-bit variable
   i is first extended to 64-bit type).  */

/* { dg-options "-O2 -fdump-tree-optimized" } */
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */

unsigned bar(void);

void foo(unsigned *p, unsigned n)
{
  unsigned i;

  for (i = 0; i < n; i++)
    p[i] = bar ();
}

/* Check that the memory reference was replaced with MEM, and that there is no
   multiplication.  */

/* { dg-final { scan-tree-dump-times "MEM" 1 "optimized" } } */
/* { dg-final { scan-tree-dump-times "\[^\\n\\r\]*= \\* " 0 "optimized" } } */