diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-2.ll
new file mode 100644
index 0000000000000..00a91bd42af3f
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-f32-stride-2.ll
@@ -0,0 +1,74 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@A = global [1024 x float] zeroinitializer, align 128
+@B = global [1024 x i8] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 6 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 14 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 28 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; SSE2: LV: Found an estimated cost of 56 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 6 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 17 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 38 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 76 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX1: LV: Found an estimated cost of 152 for VF 32 For instruction:   %v0 = load float, float* %in0, align 4
+;;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 6 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 17 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 38 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 76 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX2: LV: Found an estimated cost of 152 for VF 32 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 3 for VF 2 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 3 for VF 4 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 3 for VF 8 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 5 for VF 16 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 22 for VF 32 For instruction:   %v0 = load float, float* %in0, align 4
+; AVX512: LV: Found an estimated cost of 92 for VF 64 For instruction:   %v0 = load float, float* %in0, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   %v0 = load float, float* %in0, align 2
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+
+  %in0 = getelementptr inbounds [1024 x float], [1024 x float]* @A, i64 0, i64 %iv.0
+  %in1 = getelementptr inbounds [1024 x float], [1024 x float]* @A, i64 0, i64 %iv.1
+
+  %v0 = load float, float* %in0
+  %v1 = load float, float* %in1
+
+  %reduce.add.0 = fadd float %v0, %v1
+
+  %reduce.add.0.narrow = fptoui float %reduce.add.0 to i8
+
+  %out = getelementptr inbounds [1024 x i8], [1024 x i8]* @B, i64 0, i64 %iv.0
+  store i8 %reduce.add.0.narrow, i8* %out
+
+  %iv.next = add nuw nsw i64 %iv.0, 2
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-2.ll
new file mode 100644
index 0000000000000..35f8d7a125b66
--- /dev/null
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-f32-stride-2.ll
@@ -0,0 +1,75 @@
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+sse2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx  --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX1
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx2 --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX2
+; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -S -mattr=+avx512bw,+avx512vl --debug-only=loop-vectorize < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,AVX512
+; REQUIRES: asserts
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@A = global [1024 x i8] zeroinitializer, align 128
+@B = global [1024 x float] zeroinitializer, align 128
+
+; CHECK: LV: Checking a loop in "test"
+;
+; SSE2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v1, float* %out1, align 4
+; SSE2: LV: Found an estimated cost of 6 for VF 2 For instruction:   store float %v1, float* %out1, align 4
+; SSE2: LV: Found an estimated cost of 14 for VF 4 For instruction:   store float %v1, float* %out1, align 4
+; SSE2: LV: Found an estimated cost of 28 for VF 8 For instruction:   store float %v1, float* %out1, align 4
+; SSE2: LV: Found an estimated cost of 56 for VF 16 For instruction:   store float %v1, float* %out1, align 4
+;
+; AVX1: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v1, float* %out1, align 4
+; AVX1: LV: Found an estimated cost of 6 for VF 2 For instruction:   store float %v1, float* %out1, align 4
+; AVX1: LV: Found an estimated cost of 15 for VF 4 For instruction:   store float %v1, float* %out1, align 4
+; AVX1: LV: Found an estimated cost of 38 for VF 8 For instruction:   store float %v1, float* %out1, align 4
+; AVX1: LV: Found an estimated cost of 76 for VF 16 For instruction:   store float %v1, float* %out1, align 4
+; AVX1: LV: Found an estimated cost of 152 for VF 32 For instruction:   store float %v1, float* %out1, align 4
+;
+; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v1, float* %out1, align 4
+; AVX2: LV: Found an estimated cost of 6 for VF 2 For instruction:   store float %v1, float* %out1, align 4
+; AVX2: LV: Found an estimated cost of 15 for VF 4 For instruction:   store float %v1, float* %out1, align 4
+; AVX2: LV: Found an estimated cost of 38 for VF 8 For instruction:   store float %v1, float* %out1, align 4
+; AVX2: LV: Found an estimated cost of 76 for VF 16 For instruction:   store float %v1, float* %out1, align 4
+; AVX2: LV: Found an estimated cost of 152 for VF 32 For instruction:   store float %v1, float* %out1, align 4
+;
+; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 2 for VF 2 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 2 for VF 4 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 2 for VF 8 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 5 for VF 16 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 10 for VF 32 For instruction:   store float %v1, float* %out1, align 4
+; AVX512: LV: Found an estimated cost of 20 for VF 64 For instruction:   store float %v1, float* %out1, align 4
+;
+; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF {{[0-9]+}} For instruction:   store float %v1, float* %out1, align 2
+
+define void @test() {
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+
+  %iv.0 = add nuw nsw i64 %iv, 0
+  %iv.1 = add nuw nsw i64 %iv, 1
+
+  %in = getelementptr inbounds [1024 x i8], [1024 x i8]* @A, i64 0, i64 %iv.0
+  %v.narrow = load i8, i8* %in
+
+  %v = uitofp i8 %v.narrow to float
+
+  %v0 = fadd float %v, 0.0
+  %v1 = fadd float %v, 1.0
+
+  %out0 = getelementptr inbounds [1024 x float], [1024 x float]* @B, i64 0, i64 %iv.0
+  %out1 = getelementptr inbounds [1024 x float], [1024 x float]* @B, i64 0, i64 %iv.1
+
+  store float %v0, float* %out0
+  store float %v1, float* %out1
+
+  %iv.next = add nuw nsw i64 %iv.0, 2
+  %cmp = icmp ult i64 %iv.next, 1024
+  br i1 %cmp, label %for.body, label %for.cond.cleanup
+
+for.cond.cleanup:
+  ret void
+}