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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/64425] [5 Regression] r219076 causes 36% tramp3d slowdown
Date: Sun, 04 Jan 2015 16:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64425

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I've tested the patch, too. 
There were two issues.

1) on ppc64:

(after training)
trippels@gcc2-power8 ~ % ~/gcc_test/usr/local/bin/g++ -Ofast -fprofile-use -w
tramp3d-v4.cpp
tramp3d-v4.cpp:64206:1: internal compiler error: in edge_badness, at
ipa-inline.c:1030
 }
 ^
0x110330ff edge_badness  
        ../../gcc/gcc/ipa-inline.c:1030
0x11039083 update_edge_key
        ../../gcc/gcc/ipa-inline.c:1059
0x11039083 inline_small_functions
        ../../gcc/gcc/ipa-inline.c:1634
0x1103b0af ipa_inline
        ../../gcc/gcc/ipa-inline.c:2175
0x1103b0af execute
        ../../gcc/gcc/ipa-inline.c:2548
Please submit a full bug report,
with preprocessed source if appropriate.

2) Firefox PGO/LTO build on x86_64 segfaults on start.