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[Bug middle-end/13775] [3.4/3.5 Regression] Many C++ compile-time regression in 3.4.0 in comparison with 3.3.2
- From: "roger at eyesopen dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Feb 2004 04:56:20 -0000
- Subject: [Bug middle-end/13775] [3.4/3.5 Regression] Many C++ compile-time regression in 3.4.0 in comparison with 3.3.2
- References: <20040120183448.13775.kgardas@objectsecurity.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From roger at eyesopen dot com 2004-02-05 04:56 -------
I've just tried compiling the indicated typecode.cc.ii with -O2 -ftime-report
on i686-pc-cygwin (3.5.0 20040131), and get very different numbers:
garbage collection : 3.80 (10%) usr 0.00 ( 0%) sys 3.80 ( 9%) wall
life analysis : 13.26 (34%) usr 0.03 ( 2%) sys 13.33 (33%) wall
parser : 3.76 (10%) usr 0.37 (25%) sys 4.22 (10%) wall
name lookup : 2.01 ( 5%) usr 0.70 (47%) sys 2.70 ( 7%) wall
expand : 1.37 ( 4%) usr 0.01 ( 1%) sys 1.39 ( 3%) wall
CSE : 1.70 ( 4%) usr 0.00 ( 0%) sys 1.70 ( 4%) wall
global alloc : 3.03 ( 8%) usr 0.02 ( 1%) sys 3.06 ( 8%) wall
TOTAL : 38.64 1.50 40.30
I'll try on x86/Linux, but if RTL expansion is a problem, its target dependent.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13775