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re PR tree-optimization/23584 (ipa-pure-const pass ignores dereferencing a volatile pointer type)

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PR middle-end/23584
    * gcc.dg/pr23584.c: New test.

From-SVN: r104284
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Josh Conner 2005-09-14 21:34:37 +00:00 • committed by Josh Conner
parent c5e04c908b
commit a325b0be7e
2 changed files with 26 additions and 0 deletions
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5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2005-09-14 Josh Conner <jconner@apple.com>
PR middle-end/23584
* gcc.dg/pr23584.c: New test.
2005-09-14 Jerry DeLisle <jvdelisle@verizon.net>
PR fortran/21875 Internal Unit Array I/O, NIST

21
gcc/testsuite/gcc.dg/pr23584.c Normal file
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/* Regression test for PR middle-end/23584 */
/* Verify that dereferencing an absolute address inside of a function
makes that function impure. */
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-ipa-pure-const" } */
int test1 (void)
{
return * (volatile int *) 0x1234;
}
int test2 (void)
{
int local = * (volatile int *) 0x1234;
return local;
}
/* { dg-final { scan-ipa-dump-not "found to be pure: test1" "pure-const" } } */
/* { dg-final { scan-ipa-dump-not "found to be pure: test2" "pure-const" } } */
/* { dg-final { cleanup-ipa-dump "pure-const" } } */