[Bug c/90721] New: [Bug] ./gcc.dg/torture/stackalign/builtin-apply-4.c test case getting fail

[akhilesh.k at samsung dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90721

            Bug ID: 90721
           Summary: [Bug]  ./gcc.dg/torture/stackalign/builtin-apply-4.c
                    test case getting fail
           Product: gcc
           Version: 8.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: akhilesh.k at samsung dot com
  Target Milestone: ---

Hello 

I am working On ARM target: in that 
./gcc.dg/torture/stackalign/builtin-apply-4.c test case getting fail when we
use -flto flag with gcc 8.3 but same test cases getting pass when we run on gcc
6.3 
=================================================
bash-3.2# cat ./gcc.dg/torture/stackalign/builtin-apply-4.c
/* PR tree-optimization/20076 */
/* { dg-do run } */
/* { dg-additional-options "-fgnu89-inline" } */
/* { dg-require-effective-target untyped_assembly } */

#include <stdio.h>
extern void abort (void);

double
foo (int arg)
{
  if (arg != 116)
    abort();
  return arg + 1;
}

inline double
bar (int arg)
{
  foo (arg);
  __builtin_return (__builtin_apply ((void (*) ()) foo,
                                     __builtin_apply_args (), 16));
}

int
main (int argc, char **argv)
{
  if (bar (116) != 117.0)
        printf("hello\n");
  return 0;
}

bash-3.2#

=================================================
gcc 8.x Results 
bash-3.2# gcc ./gcc.dg/torture/stackalign/builtin-apply-4.c -flto
-fgnu89-inline -lm -o ./builtin-apply-4.exe
bash-3.2# ./builtin-apply-4.exe
hello
bash-3.2#

gcc 6.3 test results 
bash-3.2# /bin/gcc ./gcc.dg/torture/stackalign/builtin-apply-4.c -flto
-fgnu89-inline -lm -o ./builtin-apply-4.exe
bash-3.2# ./builtin-apply-4.exe
bash-3.2#

it seems that __builtin_apply returning wrong value