diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -5076,6 +5076,7 @@
       {2, MVT::v32i16, 18}, // (load 64i16 and) deinterleave into 2 x 32i16
 
       {2, MVT::v2i32, 2}, // (load 4i32 and) deinterleave into 2 x 2i32
+      {2, MVT::v4i32, 2}, // (load 8i32 and) deinterleave into 2 x 4i32
 
       {2, MVT::v4i64, 6}, // (load 8i64 and) deinterleave into 2 x 4i64
 
@@ -5121,6 +5122,7 @@
       {2, MVT::v32i16, 8}, // interleave 2 x 32i16 into 64i16 (and store)
 
       {2, MVT::v2i32, 1}, // interleave 2 x 2i32 into 4i32 (and store)
+      {2, MVT::v4i32, 2}, // interleave 2 x 4i32 into 8i32 (and store)
 
       {2, MVT::v4i64, 6}, // interleave 2 x 4i64 into 8i64 (and store)
 
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-i32-stride-2.ll
@@ -27,7 +27,7 @@
 ;
 ; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i32, i32* %in0, align 4
 ; AVX2: LV: Found an estimated cost of 3 for VF 2 For instruction:   %v0 = load i32, i32* %in0, align 4
-; AVX2: LV: Found an estimated cost of 21 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
+; AVX2: LV: Found an estimated cost of 3 for VF 4 For instruction:   %v0 = load i32, i32* %in0, align 4
 ; AVX2: LV: Found an estimated cost of 46 for VF 8 For instruction:   %v0 = load i32, i32* %in0, align 4
 ; AVX2: LV: Found an estimated cost of 92 for VF 16 For instruction:   %v0 = load i32, i32* %in0, align 4
 ; AVX2: LV: Found an estimated cost of 184 for VF 32 For instruction:   %v0 = load i32, i32* %in0, align 4
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-i32-stride-2.ll
@@ -27,7 +27,7 @@
 ;
 ; AVX2: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i32 %v1, i32* %out1, align 4
 ; AVX2: LV: Found an estimated cost of 2 for VF 2 For instruction:   store i32 %v1, i32* %out1, align 4
-; AVX2: LV: Found an estimated cost of 19 for VF 4 For instruction:   store i32 %v1, i32* %out1, align 4
+; AVX2: LV: Found an estimated cost of 3 for VF 4 For instruction:   store i32 %v1, i32* %out1, align 4
 ; AVX2: LV: Found an estimated cost of 46 for VF 8 For instruction:   store i32 %v1, i32* %out1, align 4
 ; AVX2: LV: Found an estimated cost of 92 for VF 16 For instruction:   store i32 %v1, i32* %out1, align 4
 ; AVX2: LV: Found an estimated cost of 184 for VF 32 For instruction:   store i32 %v1, i32* %out1, align 4