1 files changed, 28 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SLPVectorizer/ARM/memory.ll b/llvm/test/Transforms/SLPVectorizer/ARM/memory.ll
new file mode 100644
index 00000000000..70e87033207
--- /dev/null
+++ b/llvm/test/Transforms/SLPVectorizer/ARM/memory.ll
@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=thumbv7-apple-ios3.0.0 -mcpu=swift | FileCheck %s
+
+target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
+
+; On swift unaligned <2 x double> stores need 4uops and it is there for cheaper
+; to do this scalar.
+
+define void @expensive_double_store(double* noalias %dst, double* noalias %src, i64 %count) {
+; CHECK-LABEL: @expensive_double_store(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load double, double* [[SRC:%.*]], align 8
+; CHECK-NEXT:    store double [[TMP0]], double* [[DST:%.*]], align 8
+; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds double, double* [[SRC]], i64 1
+; CHECK-NEXT:    [[TMP1:%.*]] = load double, double* [[ARRAYIDX2]], align 8
+; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds double, double* [[DST]], i64 1
+; CHECK-NEXT:    store double [[TMP1]], double* [[ARRAYIDX3]], align 8
+; CHECK-NEXT:    ret void
+;
+entry:
+  %0 = load double, double* %src, align 8
+  store double %0, double* %dst, align 8
+  %arrayidx2 = getelementptr inbounds double, double* %src, i64 1
+  %1 = load double, double* %arrayidx2, align 8
+  %arrayidx3 = getelementptr inbounds double, double* %dst, i64 1
+  store double %1, double* %arrayidx3, align 8
+  ret void
+}