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[Bug tree-optimization/29716] [4.2/4.3 Regression] Wrong code with arrays
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Nov 2006 22:10:54 -0000
- Subject: [Bug tree-optimization/29716] [4.2/4.3 Regression] Wrong code with arrays
- References: <bug-29716-6528@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from rguenth at gcc dot gnu dot org 2006-11-04 22:10 -------
Starting with DOM we have
<bb 2>:
# SFT.3_3 = V_MUST_DEF <SFT.3_2>;
a[0] = 0;
# SFT.2_5 = V_MUST_DEF <SFT.2_4>;
a[1] = 1;
# SFT.1_7 = V_MUST_DEF <SFT.1_6>;
a[2] = 2;
...
<L2>:;
# VUSE <SFT.2_5>;
D.1621_14 = a[1];
t.0_15 = t.0_11;
D.1620_16 = t.0_15 + 1;
if (D.1621_14 != D.1620_16) goto <L3>; else goto <L4>;
which is wrong.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29716