Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/guality/pr58791-5.c @ 158:494b0b89df80 default tip
...
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 04ced10e8804 |
children |
line wrap: on
line source
/* 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; }