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re PR middle-end/27302 (Fold does not fold (i < j) == (j > i) to 1)

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2007-02-06  Richard Guenther  <rguenther@suse.de>

        PR middle-end/27302
        * gcc.dg/torture/pr27302-2.c: New testcase.

From-SVN: r121644
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Richard Guenther 2007-02-06 12:38:32 +00:00 committed by Richard Biener
parent fbf798fcc5
commit 568265573d
2 changed files with 57 additions and 0 deletions
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5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2007-02-06 Richard Guenther <rguenther@suse.de>
PR middle-end/27302
* gcc.dg/torture/pr27302-2.c: New testcase.
2007-02-06 Dorit Nuzman <dorit@il.ibm.com>
* gcc.dg/vect/vect.exp: Add support for -fno-tree-scev-cprop tests.

52
gcc/testsuite/gcc.dg/torture/pr27302-2.c Normal file
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/* { dg-do run } */
/* { dg-options "-fstrict-overflow" } */
extern void link_error (void);
void test0 (int a, int b)
{
if ((a < b) != (b > a))
link_error ();
if ((a - 1 < b) != (a <= b))
link_error ();
if ((a - 2 < b) != (a - 1 <= b))
link_error ();
if ((a + -1 < b) != (a <= b))
link_error ();
if ((a + -2 < b) != (a + -1 <= b))
link_error ();
if ((a + 1 > b) != (a >= b))
link_error ();
if ((a + 2 > b) != (a + 1 >= b))
link_error ();
if ((a - -1 > b) != (a >= b))
link_error ();
if ((a - -2 > b) != (a - -1 >= b))
link_error ();
if ((a + 1 <= b) != (a < b))
link_error ();
if ((a + 2 <= b) != (a + 1 < b))
link_error ();
if ((a - -1 <= b) != (a < b))
link_error ();
if ((a - -2 <= b) != (a - -1 < b))
link_error ();
if ((a - 1 >= b) != (a > b))
link_error ();
if ((a - 2 >= b) != (a - 1 > b))
link_error ();
if ((a + -1 >= b) != (a > b))
link_error ();
if ((a + -2 >= b) != (a + -1 > b))
link_error ();
}
int main()
{
test0 (1, 2);
return 0;
}