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Commit 165ba2e9 authored by Jakub Jelinek's avatar Jakub Jelinek Committed by Jakub Jelinek
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re PR tree-optimization/71563 (Regression in GCC-7.0.0's optimizer.) 

	PR tree-optimization/71563
	* match.pd: Simplify X << Y into X if Y is known to be 0 or
	out of range value - has low bits known to be zero.

	* gcc.dg/tree-ssa/pr71563.c: New test.

From-SVN: r244050
parent 8f56cb51
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