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/* PR tree-optimization/58791 */
/* { dg-do run } */
/* { dg-options "-g" } */
#include "../nop.h"
__attribute__((noinline, noclone)) unsigned int
foo (unsigned int a0, unsigned int a1, unsigned int a2,
unsigned int a3, unsigned int a4)
{
unsigned int b0, b1, b2, b3, b4, e;
/* this can be optimized to four additions... */
b4 = a4 + a3 + a2 + a1 + a0; /* { dg-final { gdb-test pr58791-5.c:20 "b4" "4681" } } */
b3 = a3 + a2 + a1 + a0; /* { dg-final { gdb-test pr58791-5.c:20 "b3" "585" } } */
b2 = a2 + a1 + a0; /* { dg-final { gdb-test pr58791-5.c:20 "b2" "73" } } */
b1 = a1 + a0; /* { dg-final { gdb-test pr58791-5.c:20 "b1" "9" } } */
/* This is actually 0 */
e = b4 - b3 + b2 - b1 - a4 - a2; /* { dg-final { gdb-test pr58791-5.c:20 "e" "0" } } */
asm volatile (NOP : : : "memory");
asm volatile (NOP : : : "memory");
return e;
}
int
main ()
{
foo (1, 8, 64, 512, 4096);
return 0;
}
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