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[Bug rtl-optimization/32084] gfortran 4.3 13%-18% slower for induct.f90 than gcc 4.0-based competitor
- 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: 28 Jun 2007 11:40:03 -0000
- Subject: [Bug rtl-optimization/32084] gfortran 4.3 13%-18% slower for induct.f90 than gcc 4.0-based competitor
- References: <bug-32084-13404@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #12 from rguenth at gcc dot gnu dot org 2007-06-28 11:40 -------
I suspect the vectorizer leaves us with too much dead statements that confuse
the complete unrollers size cost metric. Running dce after vectorization might
fix this.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32084