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[AArch64] Add DAG combine for extract extend pattern
authorMatthew Simpson <mssimpso@codeaurora.org>
Thu, 17 Dec 2015 14:30:55 +0000 (14:30 +0000)
committerMatthew Simpson <mssimpso@codeaurora.org>
Thu, 17 Dec 2015 14:30:55 +0000 (14:30 +0000)
commitdbf81cc034169bfee63e8ddc1ab58f1e07bebca5
treeb84e3449deb20c042bde7198450a85e82382a584tree | snapshot
parentadb5a4d946d1f657c63849d17852276e1604cc9ccommit | diff
[AArch64] Add DAG combine for extract extend pattern

This patch adds a DAG combine for (any_extend (extract_vector_elt v, i)) ->
(extract_vector_elt v, i). The combine enables us to better match some SMOV
patterns.

Differential Revision: http://reviews.llvm.org/D15515

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255895 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/AArch64/AArch64ISelLowering.cpp diff | blob | history
test/CodeGen/AArch64/arm64-neon-copy.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors