OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [nrv5.c] - Rev 298

Compare with Previous | Blame | View Log

/* Verify that NRV optimizations are prohibited when the LHS is
   something that may be call-clobbered. */
/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-optimized" } */
 
typedef struct { int x[20]; void *y; } S;
typedef struct { int a; S b; } T;
S nrv_candidate (void);
void use_result (S);
void make_escape (S *);
void foo (void)
{
  S result;
  T result_arr[10][5];
 
  make_escape (&result);
  make_escape (&(result_arr[3][4].b));
 
  /* Neither call should be allowed to use NRV optimization.  */
  result = nrv_candidate ();
  result_arr[3][4].b = nrv_candidate ();
 
  use_result (result);
  use_result (result_arr[3][4].b);
}
 
/* { dg-final { scan-tree-dump-times "return slot optimization" 0 "optimized" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */
 

Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.