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