From: Silviu Baranga <silviu.baranga@arm.com>
Date: Tue, 1 Sep 2015 11:12:35 +0000 (+0000)
Subject: [ARM][AArch64] Turn on by default interleaved access lowering
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=bbdc83dd12f113849dca105317aabaadf41554f6

[ARM][AArch64] Turn on by default interleaved access lowering

Summary:
Interleaved access lowering removes a memory operation and a
sequence of vector shuffles and replaces it with a series of
memory operations. This should be always beneficial.

This pass in only enabled on ARM/AArch64.

Reviewers: rengolin

Subscribers: aemerson, llvm-commits, rengolin

Differential Revision: http://reviews.llvm.org/D12145

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246540 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/InterleavedAccessPass.cpp b/lib/CodeGen/InterleavedAccessPass.cpp
index baacf1ad9e1..724f1d61abe 100644
--- a/lib/CodeGen/InterleavedAccessPass.cpp
+++ b/lib/CodeGen/InterleavedAccessPass.cpp
@@ -52,7 +52,7 @@ using namespace llvm;
 static cl::opt<bool> LowerInterleavedAccesses(
     "lower-interleaved-accesses",
     cl::desc("Enable lowering interleaved accesses to intrinsics"),
-    cl::init(false), cl::Hidden);
+    cl::init(true), cl::Hidden);
 
 static unsigned MaxFactor; // The maximum supported interleave factor.
 
diff --git a/test/CodeGen/ARM/vext.ll b/test/CodeGen/ARM/vext.ll
index 61342022ad5..394ecfb281f 100644
--- a/test/CodeGen/ARM/vext.ll
+++ b/test/CodeGen/ARM/vext.ll
@@ -1,4 +1,4 @@
-; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o - | FileCheck %s
+; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o - -lower-interleaved-accesses=false | FileCheck %s
 
 define <8 x i8> @test_vextd(<8 x i8>* %A, <8 x i8>* %B) nounwind {
 ;CHECK-LABEL: test_vextd:
diff --git a/test/CodeGen/ARM/vpadd.ll b/test/CodeGen/ARM/vpadd.ll
index e362ce36f8b..6ddf9850cfc 100644
--- a/test/CodeGen/ARM/vpadd.ll
+++ b/test/CodeGen/ARM/vpadd.ll
@@ -1,4 +1,4 @@
-; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o - | FileCheck %s
+; RUN: llc -mtriple=arm-eabi -mattr=+neon %s -o - -lower-interleaved-accesses=false | FileCheck %s
 
 define <8 x i8> @vpaddi8(<8 x i8>* %A, <8 x i8>* %B) nounwind {
 ;CHECK-LABEL: vpaddi8: