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
@@ -5236,6 +5236,7 @@
       {2, MVT::v4i64, 4},   // (load 8i64 and) deinterleave into 2 x 4i64
       {2, MVT::v8i64, 8},   // (load 16i64 and) deinterleave into 2 x 8i64
       {2, MVT::v16i64, 16}, // (load 32i64 and) deinterleave into 2 x 16i64
+      {2, MVT::v32i64, 32}, // (load 64i64 and) deinterleave into 2 x 32i64
 
       {3, MVT::v2i8, 3},   // (load 6i8 and) deinterleave into 3 x 2i8
       {3, MVT::v4i8, 3},   // (load 12i8 and) deinterleave into 3 x 4i8
@@ -5329,6 +5330,7 @@
       {2, MVT::v4i64, 4},   // interleave 2 x 4i64 into 8i64 (and store)
       {2, MVT::v8i64, 8},   // interleave 2 x 8i64 into 16i64 (and store)
       {2, MVT::v16i64, 16}, // interleave 2 x 16i64 into 32i64 (and store)
+      {2, MVT::v32i64, 32}, // interleave 2 x 32i64 into 64i64 (and store)
 
       {3, MVT::v2i8, 4},   // interleave 3 x 2i8 into 6i8 (and store)
       {3, MVT::v4i8, 4},   // interleave 3 x 4i8 into 12i8 (and store)
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-f64-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-f64-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-load-f64-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-f64-stride-2.ll
@@ -30,7 +30,7 @@
 ; AVX2: LV: Found an estimated cost of 6 for VF 4 For instruction:   %v0 = load double, double* %in0, align 8
 ; AVX2: LV: Found an estimated cost of 12 for VF 8 For instruction:   %v0 = load double, double* %in0, align 8
 ; AVX2: LV: Found an estimated cost of 24 for VF 16 For instruction:   %v0 = load double, double* %in0, align 8
-; AVX2: LV: Found an estimated cost of 128 for VF 32 For instruction:   %v0 = load double, double* %in0, align 8
+; AVX2: LV: Found an estimated cost of 48 for VF 32 For instruction:   %v0 = load double, double* %in0, align 8
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load double, double* %in0, align 8
 ; AVX512: LV: Found an estimated cost of 3 for VF 2 For instruction:   %v0 = load double, double* %in0, align 8
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-load-i64-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-load-i64-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-load-i64-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-load-i64-stride-2.ll
@@ -30,7 +30,7 @@
 ; AVX2: LV: Found an estimated cost of 6 for VF 4 For instruction:   %v0 = load i64, i64* %in0, align 8
 ; AVX2: LV: Found an estimated cost of 12 for VF 8 For instruction:   %v0 = load i64, i64* %in0, align 8
 ; AVX2: LV: Found an estimated cost of 24 for VF 16 For instruction:   %v0 = load i64, i64* %in0, align 8
-; AVX2: LV: Found an estimated cost of 208 for VF 32 For instruction:   %v0 = load i64, i64* %in0, align 8
+; AVX2: LV: Found an estimated cost of 48 for VF 32 For instruction:   %v0 = load i64, i64* %in0, align 8
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   %v0 = load i64, i64* %in0, align 8
 ; AVX512: LV: Found an estimated cost of 3 for VF 2 For instruction:   %v0 = load i64, i64* %in0, align 8
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-f64-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-f64-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-store-f64-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-f64-stride-2.ll
@@ -30,7 +30,7 @@
 ; AVX2: LV: Found an estimated cost of 6 for VF 4 For instruction:   store double %v1, double* %out1, align 8
 ; AVX2: LV: Found an estimated cost of 12 for VF 8 For instruction:   store double %v1, double* %out1, align 8
 ; AVX2: LV: Found an estimated cost of 24 for VF 16 For instruction:   store double %v1, double* %out1, align 8
-; AVX2: LV: Found an estimated cost of 128 for VF 32 For instruction:   store double %v1, double* %out1, align 8
+; AVX2: LV: Found an estimated cost of 48 for VF 32 For instruction:   store double %v1, double* %out1, align 8
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store double %v1, double* %out1, align 8
 ; AVX512: LV: Found an estimated cost of 2 for VF 2 For instruction:   store double %v1, double* %out1, align 8
diff --git a/llvm/test/Analysis/CostModel/X86/interleaved-store-i64-stride-2.ll b/llvm/test/Analysis/CostModel/X86/interleaved-store-i64-stride-2.ll
--- a/llvm/test/Analysis/CostModel/X86/interleaved-store-i64-stride-2.ll
+++ b/llvm/test/Analysis/CostModel/X86/interleaved-store-i64-stride-2.ll
@@ -30,7 +30,7 @@
 ; AVX2: LV: Found an estimated cost of 6 for VF 4 For instruction:   store i64 %v1, i64* %out1, align 8
 ; AVX2: LV: Found an estimated cost of 12 for VF 8 For instruction:   store i64 %v1, i64* %out1, align 8
 ; AVX2: LV: Found an estimated cost of 24 for VF 16 For instruction:   store i64 %v1, i64* %out1, align 8
-; AVX2: LV: Found an estimated cost of 208 for VF 32 For instruction:   store i64 %v1, i64* %out1, align 8
+; AVX2: LV: Found an estimated cost of 48 for VF 32 For instruction:   store i64 %v1, i64* %out1, align 8
 ;
 ; AVX512: LV: Found an estimated cost of 1 for VF 1 For instruction:   store i64 %v1, i64* %out1, align 8
 ; AVX512: LV: Found an estimated cost of 2 for VF 2 For instruction:   store i64 %v1, i64* %out1, align 8