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vrp76.c: New test.

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2012-08-01  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/vrp76.c: New test.

From-SVN: r190044
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Tom de Vries 2012-08-01 16:53:15 +00:00 committed by Tom de Vries
parent 8bb37e9ad3
commit ece401eecc
2 changed files with 39 additions and 0 deletions
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4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2012-08-01 Tom de Vries <tom@codesourcery.com>
* gcc.dg/tree-ssa/vrp76.c: New test.
2012-08-01 Bill Schmidt <wschmidt@linux.ibm.com>
PR tree-optimization/46556

35
gcc/testsuite/gcc.dg/tree-ssa/vrp76.c Normal file
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/* { dg-do link } */
/* { dg-options "-O2 -fno-tree-switch-conversion" } */
/* Based on f3 from vrp63.c, but with switch instead of if-chain. This test
tests the propagation of an anti-range in a switch statement. */
extern void link_error (void);
void
f3 (int s)
{
if (s >> 3 == -2)
/* s in range [ -16, -9]. */
;
else
{
/* s in range ~[-16, -9], so none of the case labels can be taken. */
switch (s)
{
case -16:
case -12:
case -9:
link_error ();
break;
default:
break;
}
}
}
int
main ()
{
return 0;
}