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[PowerPC] Improve handling of some BUILD_VECTOR nodes

Authored by nemanjai on Mar 23 2020, 3:34 PM.

Description

[PowerPC] Improve handling of some BUILD_VECTOR nodes

An analysis of real world code turned up a number of patterns with BUILD_VECTOR
of nodes resulting from operations on extracted vector elements for which we
produce poor code. This addresses those cases. No attempt is made for
completeness as that would entail a large amount of work for something that
there is no evidence of in real code.

Differential revision: https://reviews.llvm.org/D72660

Details

Committed
nemanjaiMar 23 2020, 3:34 PM
Differential Revision
D72660: [PowerPC] Improve handling of some BUILD_VECTOR nodes
Parents
rGc5c4109071ce: [examples] Fixes for BUILD_SHARED_LIBS=on
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