Commit 9e16c5bf authored by Amara Emerson's avatar Amara Emerson Committed by Tom Stellard
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[AArch64][GlobalISel] Look through a G_ZEXT when trying to match shift-extended register offsets. 

The G_ZEXT in these cases seems to actually come from a combine that we do but
SelectionDAG doesn't. Looking through it allows us to match "uxtw #2" addressing
modes.

Differential Revision: https://reviews.llvm.org/D91475

(cherry picked from commit 0b609069)
parent 6ec777c2
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