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[Bug tree-optimization/45397] [4.5/4.6/4.7/4.8 Regression] Issues with integer narrowing conversions
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 02 Mar 2012 09:48:17 +0000
- Subject: [Bug tree-optimization/45397] [4.5/4.6/4.7/4.8 Regression] Issues with integer narrowing conversions
- Auto-submitted: auto-generated
- References: <bug-45397-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45397
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-02 09:48:17 UTC ---
Another testcase:
signed char a[1024], b[1024];
void
baz (void)
{
int i, s, t;
for (i = 0; i < 1024; i++)
{ s = a[i]; t = b[i]; s += t + 0x12345600; a[i] = s; }
}
The addition of constant we should be able to optimize away completely, but we
don't.