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[Bug tree-optimization/80426] [7 Regression] wrong manipulation of range based on INT_MIN
- From: "law at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 19 Apr 2017 19:27:41 +0000
- Subject: [Bug tree-optimization/80426] [7 Regression] wrong manipulation of range based on INT_MIN
- Auto-submitted: auto-generated
- References: <bug-80426-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80426
--- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Wed Apr 19 19:27:09 2017
New Revision: 247007
URL: https://gcc.gnu.org/viewcvs?rev=247007&root=gcc&view=rev
Log:
PR tree-optimization/80426
* tree-vrp.c (extract_range_from_binary_expr_1): For an additive
operation on symbolic operands, also compute the overflow for the
invariant part when the operation degenerates into a negation.
PR tree-optimization/80426
* gcc.c-torture/execute/20170419-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/20170429-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c