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r251337 - in /trunk/gcc: ChangeLog testsuite/Ch...


Author: amker
Date: Thu Aug 24 15:38:39 2017
New Revision: 251337

URL: https://gcc.gnu.org/viewcvs?rev=251337&root=gcc&view=rev
Log:
	PR tree-optimization/81913
	* tree-ssa-loop-niter.c (number_of_iterations_cond): Skip niter
	analysis when either IVs in condition can wrap.

	gcc/testsuite
	* gcc.c-torture/execute/pr81913.c: New test.
	* gcc.dg/tree-ssa/loop-niter-1.c: New test.
	* gcc.dg/tree-ssa/loop-niter-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr81913.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/loop-niter-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/loop-niter-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-niter.c


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