[AArch64] Disable narrow load merge by default
Summary:
As this optimization converts two loads into one load with two shift instructions,
it could potentially hurt performance if a loop is arithmetic operation intensive.
Reviewers: t.p.northover, mcrosier, jmolloy
Subscribers: evandro, jmolloy, aemerson, rengolin, mcrosier, llvm-commits
Differential Revision: http://reviews.llvm.org/D20172
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270251 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed