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/* PR optimization/11381 */
/* Originator: <tobias@ringstrom.mine.nu> */
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
/* { dg-options "-O" } */
 
/* Verify that the comparison is not optimized away. */
 
void foo(volatile unsigned int *vaddr)
{
  while (*vaddr != *vaddr)
    ;
}
 
/* { dg-final { scan-assembler "cmp" } } */

Line No.	Rev	Author	Line
1	12	jlechner	`/* PR optimization/11381 */`
2			`/* Originator: <tobias@ringstrom.mine.nu> */`
3			`/* { dg-do compile { target i?86-- x86_64-- } } */`
4			`/* { dg-options "-O" } */`
5
6			`/* Verify that the comparison is not optimized away. */`
7
8			`void foo(volatile unsigned int *vaddr)`
9			`{`
10			`while (vaddr != vaddr)`
11			`;`
12			`}`
13
14			`/* { dg-final { scan-assembler "cmp" } } */`

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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [testsuite/] [gcc.target/] [i386/] [volatile-1.c] - Blame information for rev 12