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List:       gcc-bugs
Subject:    [Bug ipa/61190] [4.8/4.9/4.10 Regression] g++.old-deja/g++.mike/p4736b.C FAILs at -O2/-Os/-O3
From:       "bernd.edlinger at hotmail dot de" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2014-05-30 20:57:41
Message-ID: bug-61190-4-x0sMmkflnr () http ! gcc ! gnu ! org/bugzilla/
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61190

Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:

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                 CC|                            |bernd.edlinger at hotmail dot de

--- Comment #1 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 32879
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32879&action=edit
slightly reduced test case

Acutally also -O1 produces wrong code, and happens to not crash by chance.
Only -O0 and -Og produce correct code.

The constructor Main::Main() first inlined and then completely optimized
away in the dce1 pass.

But even with -fno-tree-dce the constructor seems to be removed in the rtl
passes.
However when I use -fno-ipa-pure-const the sample works at all optimization
levels.

So should we blame "ipa-pure-const"?
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