tree-optimization/99793 - testcase for the PR

This adds a testcase for the PR which was fixed with the fix for
PR100112.

2021-09-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/99793
	* gcc.dg/tree-ssa/pr99793.c: New testcase.
This commit is contained in:
Richard Biener 2021-09-28 12:48:50 +02:00
parent 5b8b1522e0
commit 34b1e44e16

View File

@ -0,0 +1,14 @@
/* { dg-do compile } */
/* { dg-options "-O -fstrict-aliasing -fdump-tree-optimized" } */
extern void foo(void);
static int a, *b = &a, c, *d = &c;
int main()
{
int **e = &d;
if (!((unsigned)((*e = d) == 0) - (*b = 1)))
foo();
return 0;
}
/* { dg-final { scan-tree-dump-not "foo" "optimized" } } */