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[Bug middle-end/38934] [4.3/4.4 Regression] ICE in set_value_range, at tree-vrp.c:398
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 27 Jan 2009 15:14:01 -0000
- Subject: [Bug middle-end/38934] [4.3/4.4 Regression] ICE in set_value_range, at tree-vrp.c:398
- References: <bug-38934-7849@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from jakub at gcc dot gnu dot org 2009-01-27 15:14 -------
The problem on ix86 is I believe that on such a register starved host, using
long long in many places will mean very noticeable performance degradation.
In any case, I'd prefer to change tree-vrp.c at this point (am going to
bootstrap/regtest it), with the testcase with -w in dg-options, and handle the
rest separately, as P2. The rest is certainly not a recent regression (3.4.0
behaves the same way between i386 cc1 and x86_64 cc1 -m32).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38934