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llvm/test/CodeGen/SystemZ
Zhan Jun Liau 464847757f [SystemZ] Recognize RISBG opportunities involving a truncate
Summary:
Recognize RISBG opportunities where the end result is narrower than the
original input - where a truncate separates the shift/and operations.

The motivating case is some code in postgres which looks like:

	srlg	%r2, %r0, 11
	nilh	%r2, 255

Reviewers: uweigand

Author: RolandF

Differential Revision: http://reviews.llvm.org/D21452

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273433 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-22 16:16:27 +00:00
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