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[Bug tree-optimization/30318] VRP does not create ANTI_RANGEs on overflow
- From: "glisse at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 03 Aug 2012 12:21:25 +0000
- Subject: [Bug tree-optimization/30318] VRP does not create ANTI_RANGEs on overflow
- Auto-submitted: auto-generated
- References: <bug-30318-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30318
--- Comment #22 from Marc Glisse <glisse at gcc dot gnu.org> 2012-08-03 12:21:25 UTC ---
Author: glisse
Date: Fri Aug 3 12:21:14 2012
New Revision: 190125
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190125
Log:
gcc/
2012-08-03 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/30318
* double-int.c (mul_double_wide_with_sign): New function.
(mul_double_with_sign): Call the new function.
* double-int.h (mul_double_wide_with_sign): Declare the new function.
* tree-vrp.c (extract_range_from_binary_expr_1) [MULT_EXPR]:
Handle integer types that wrap on overflow.
(quad_int_cmp): New helper function.
(quad_int_pair_sort): Likewise.
gcc/testsuite/
2012-08-03 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/30318
* gcc.dg/tree-ssa/vrp77.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp77.c (with props)
Modified:
trunk/gcc/ChangeLog
trunk/gcc/double-int.c
trunk/gcc/double-int.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
Propchange: trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp77.c
('svn:eol-style' added)
Propchange: trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp77.c
('svn:keywords' added)