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[Bug lto/49302] [4.7 Regression] FAIL: gcc.dg/lto/20110201-1 c_lto_20110201-1_0.o-c_lto_20110201-1_0.o
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 7 Jun 2011 11:52:00 +0000
- Subject: [Bug lto/49302] [4.7 Regression] FAIL: gcc.dg/lto/20110201-1 c_lto_20110201-1_0.o-c_lto_20110201-1_0.o
- Auto-submitted: auto-generated
- References: <bug-49302-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49302
--- Comment #2 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-06-07 11:51:56 UTC ---
I'll have a look. With -ffast-math, cabs is converted to
sqrt(pow(rpart,2.0),pow(ipart,2.0)). Not sure yet why the pow calls aren't
converted back to x*x form. We may have to restore just that transformation to
the expander for builtin pow. Will dig deeper today.