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[Bug tree-optimization/18544] [4.0 regression] ICE with -ftree-vectorize
- From: "dorit at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Nov 2004 21:56:28 -0000
- Subject: [Bug tree-optimization/18544] [4.0 regression] ICE with -ftree-vectorize
- References: <20041118154809.18544.reichelt@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dorit at il dot ibm dot com 2004-11-18 21:56 -------
> Note it works no when compiled with the C front-end but not with the C++
front-end.
> It is more related to PR 18546 than it is to PR18536.
This patch fixes the ICE:
http://gcc.gnu.org/ml/gcc-patches/2004-11/msg01517.html
but by figuring out that it can't vectorize it:
"
Access function of ptr: {&<retval>.x[0], +, 4B}_1
step: 4B, init: &<retval>.x[0]
...
loop at pr18544.cc:9: not vectorized: no memtag for ref.
"
So when this patch is installed this PR could be switched to "missed
optimization".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18544