Index: lib/Target/X86/X86InstructionSelector.cpp
===================================================================
--- lib/Target/X86/X86InstructionSelector.cpp
+++ lib/Target/X86/X86InstructionSelector.cpp
@@ -296,6 +296,26 @@
                               : HasAVX512
                                     ? X86::VMOVUPSZ128mr_NOVLX
                                     : HasAVX ? X86::VMOVUPSmr : X86::MOVUPSmr);
+  } else if (Ty.isVector() && Ty.getSizeInBits() == 256) {
+    if (Alignment >= 32)
+      return Isload ? (HasVLX ? X86::VMOVAPSZ256rm
+                              : HasAVX512 ? X86::VMOVAPSZ256rm_NOVLX
+                                          : X86::VMOVAPSYrm)
+                    : (HasVLX ? X86::VMOVAPSZ256mr
+                              : HasAVX512 ? X86::VMOVAPSZ256mr_NOVLX
+                                          : X86::VMOVAPSYmr);
+    else
+      return Isload ? (HasVLX ? X86::VMOVUPSZ256rm
+                              : HasAVX512 ? X86::VMOVUPSZ256rm_NOVLX
+                                          : X86::VMOVUPSYrm)
+                    : (HasVLX ? X86::VMOVUPSZ256mr
+                              : HasAVX512 ? X86::VMOVUPSZ256mr_NOVLX
+                                          : X86::VMOVUPSYmr);
+  } else if (Ty.isVector() && Ty.getSizeInBits() == 512) {
+    if (Alignment >= 64)
+      return Isload ? X86::VMOVAPSZrm : X86::VMOVAPSZmr;
+    else
+      return Isload ? X86::VMOVUPSZrm : X86::VMOVUPSZmr;
   }
   return Opc;
 }
Index: lib/Target/X86/X86LegalizerInfo.h
===================================================================
--- lib/Target/X86/X86LegalizerInfo.h
+++ lib/Target/X86/X86LegalizerInfo.h
@@ -39,6 +39,7 @@
   void setLegalizerInfoSSE1();
   void setLegalizerInfoSSE2();
   void setLegalizerInfoSSE41();
+  void setLegalizerInfoAVX();
   void setLegalizerInfoAVX2();
   void setLegalizerInfoAVX512();
   void setLegalizerInfoAVX512DQ();
Index: lib/Target/X86/X86LegalizerInfo.cpp
===================================================================
--- lib/Target/X86/X86LegalizerInfo.cpp
+++ lib/Target/X86/X86LegalizerInfo.cpp
@@ -35,6 +35,7 @@
   setLegalizerInfoSSE1();
   setLegalizerInfoSSE2();
   setLegalizerInfoSSE41();
+  setLegalizerInfoAVX();
   setLegalizerInfoAVX2();
   setLegalizerInfoAVX512();
   setLegalizerInfoAVX512DQ();
@@ -203,6 +204,18 @@
   setAction({G_MUL, v4s32}, Legal);
 }
 
+void X86LegalizerInfo::setLegalizerInfoAVX() {
+  if (!Subtarget.hasAVX())
+    return;
+
+  const LLT v8s32 = LLT::vector(8, 32);
+  const LLT v4s64 = LLT::vector(4, 64);
+
+  for (unsigned MemOp : {G_LOAD, G_STORE})
+    for (auto Ty : {v8s32, v4s64})
+      setAction({MemOp, Ty}, Legal);
+}
+
 void X86LegalizerInfo::setLegalizerInfoAVX2() {
   if (!Subtarget.hasAVX2())
     return;
@@ -219,9 +232,14 @@
     return;
 
   const LLT v16s32 = LLT::vector(16, 32);
+  const LLT v8s64 = LLT::vector(8, 64);
 
   setAction({G_MUL, v16s32}, Legal);
 
+  for (unsigned MemOp : {G_LOAD, G_STORE})
+    for (auto Ty : {v16s32, v8s64})
+      setAction({MemOp, Ty}, Legal);
+
   /************ VLX *******************/
   if (!Subtarget.hasVLX())
     return;
Index: test/CodeGen/X86/GlobalISel/memop-vec.ll
===================================================================
--- test/CodeGen/X86/GlobalISel/memop-vec.ll
+++ test/CodeGen/X86/GlobalISel/memop-vec.ll
@@ -1,39 +1,116 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=skx                       -global-isel < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=SKX
-; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=skx -regbankselect-greedy -global-isel < %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=SKX
+; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=skx                       -global-isel < %s -o - | FileCheck %s --check-prefix=SKX
+; RUN: llc -mtriple=x86_64-linux-gnu -mcpu=skx -regbankselect-greedy -global-isel < %s -o - | FileCheck %s --check-prefix=SKX
 
 define <4 x i32> @test_load_v4i32_noalign(<4 x i32> * %p1) {
-; ALL-LABEL: test_load_v4i32_noalign:
-; ALL:       # BB#0:
-; ALL-NEXT:    vmovups (%rdi), %xmm0
-; ALL-NEXT:    retq
+; SKX-LABEL: test_load_v4i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups (%rdi), %xmm0
+; SKX-NEXT:    retq
   %r = load <4 x i32>, <4 x i32>* %p1, align 1
   ret <4 x i32> %r
 }
 
 define <4 x i32> @test_load_v4i32_align(<4 x i32> * %p1) {
-; ALL-LABEL: test_load_v4i32_align:
-; ALL:       # BB#0:
-; ALL-NEXT:    vmovaps (%rdi), %xmm0
-; ALL-NEXT:    retq
+; SKX-LABEL: test_load_v4i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovaps (%rdi), %xmm0
+; SKX-NEXT:    retq
   %r = load <4 x i32>, <4 x i32>* %p1, align 16
   ret <4 x i32> %r
 }
 
+define <8 x i32> @test_load_v8i32_noalign(<8 x i32> * %p1) {
+; SKX-LABEL: test_load_v8i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups (%rdi), %ymm0
+; SKX-NEXT:    retq
+  %r = load <8 x i32>, <8 x i32>* %p1, align 1
+  ret <8 x i32> %r
+}
+
+define <8 x i32> @test_load_v8i32_align(<8 x i32> * %p1) {
+; SKX-LABEL: test_load_v8i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovaps (%rdi), %ymm0
+; SKX-NEXT:    retq
+  %r = load <8 x i32>, <8 x i32>* %p1, align 32
+  ret <8 x i32> %r
+}
+
+define <16 x i32> @test_load_v16i32_noalign(<16 x i32> * %p1) {
+; SKX-LABEL: test_load_v16i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups (%rdi), %zmm0
+; SKX-NEXT:    retq
+  %r = load <16 x i32>, <16 x i32>* %p1, align 1
+  ret <16 x i32> %r
+}
+
+define <16 x i32> @test_load_v16i32_align(<16 x i32> * %p1) {
+; SKX-LABEL: test_load_v16i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups (%rdi), %zmm0
+; SKX-NEXT:    retq
+  %r = load <16 x i32>, <16 x i32>* %p1, align 32
+  ret <16 x i32> %r
+}
+
 define void @test_store_v4i32_noalign(<4 x i32> %val, <4 x i32>* %p1) {
-; ALL-LABEL: test_store_v4i32_noalign:
-; ALL:       # BB#0:
-; ALL-NEXT:    vmovups %xmm0, (%rdi)
-; ALL-NEXT:    retq
+; SKX-LABEL: test_store_v4i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups %xmm0, (%rdi)
+; SKX-NEXT:    retq
   store <4 x i32> %val, <4 x i32>* %p1, align 1
   ret void
 }
 
 define void @test_store_v4i32_align(<4 x i32> %val, <4 x i32>* %p1) {
-; ALL-LABEL: test_store_v4i32_align:
-; ALL:       # BB#0:
-; ALL-NEXT:    vmovaps %xmm0, (%rdi)
-; ALL-NEXT:    retq
+; SKX-LABEL: test_store_v4i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovaps %xmm0, (%rdi)
+; SKX-NEXT:    retq
   store <4 x i32> %val, <4 x i32>* %p1, align 16
   ret void
 }
+
+define void @test_store_v8i32_noalign(<8 x i32> %val, <8 x i32>* %p1) {
+; SKX-LABEL: test_store_v8i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups %ymm0, (%rdi)
+; SKX-NEXT:    vzeroupper
+; SKX-NEXT:    retq
+  store <8 x i32> %val, <8 x i32>* %p1, align 1
+  ret void
+}
+
+define void @test_store_v8i32_align(<8 x i32> %val, <8 x i32>* %p1) {
+; SKX-LABEL: test_store_v8i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovaps %ymm0, (%rdi)
+; SKX-NEXT:    vzeroupper
+; SKX-NEXT:    retq
+  store <8 x i32> %val, <8 x i32>* %p1, align 32
+  ret void
+}
+
+define void @test_store_v16i32_noalign(<16 x i32> %val, <16 x i32>* %p1) {
+; SKX-LABEL: test_store_v16i32_noalign:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovups %zmm0, (%rdi)
+; SKX-NEXT:    vzeroupper
+; SKX-NEXT:    retq
+  store <16 x i32> %val, <16 x i32>* %p1, align 1
+  ret void
+}
+
+define void @test_store_v16i32_align(<16 x i32> %val, <16 x i32>* %p1) {
+; SKX-LABEL: test_store_v16i32_align:
+; SKX:       # BB#0:
+; SKX-NEXT:    vmovaps %zmm0, (%rdi)
+; SKX-NEXT:    vzeroupper
+; SKX-NEXT:    retq
+  store <16 x i32> %val, <16 x i32>* %p1, align 64
+  ret void
+}
+
Index: test/CodeGen/X86/GlobalISel/regbankselect-AVX2.mir
===================================================================
--- test/CodeGen/X86/GlobalISel/regbankselect-AVX2.mir
+++ test/CodeGen/X86/GlobalISel/regbankselect-AVX2.mir
@@ -5,6 +5,17 @@
   define void @test_mul_vec256() {
     ret void
   }
+  
+  define <8 x i32> @test_load_v8i32_noalign(<8 x i32>* %p1) {
+    %r = load <8 x i32>, <8 x i32>* %p1, align 1
+    ret <8 x i32> %r
+  }
+
+  define void @test_store_v8i32_noalign(<8 x i32> %val, <8 x i32>* %p1) {
+    store <8 x i32> %val, <8 x i32>* %p1, align 1
+    ret void
+  }
+  
 ...
 ---
 name:            test_mul_vec256
@@ -29,3 +40,47 @@
     RET 0
 
 ...
+---
+name:            test_load_v8i32_noalign
+# CHECK-LABEL: name:  test_load_v8i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: false
+# CHECK:       registers:
+# CHECK-NEXT:    - { id: 0, class: gpr }
+# CHECK-NEXT:    - { id: 1, class: vecr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<8 x s32>) = G_LOAD %0(p0) :: (load 32 from %ir.p1, align 1)
+    %ymm0 = COPY %1(<8 x s32>)
+    RET 0, implicit %ymm0
+
+...
+---
+name:            test_store_v8i32_noalign
+# CHECK-LABEL: name:  test_store_v8i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: false
+# CHECK:       registers:
+# CHECK-NEXT:    - { id: 0, class: vecr }
+# CHECK-NEXT:    - { id: 1, class: gpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %ymm0
+
+    %0(<8 x s32>) = COPY %ymm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<8 x s32>), %1(p0) :: (store 32 into %ir.p1, align 1)
+    RET 0
+
+...
Index: test/CodeGen/X86/GlobalISel/regbankselect-AVX512.mir
===================================================================
--- test/CodeGen/X86/GlobalISel/regbankselect-AVX512.mir
+++ test/CodeGen/X86/GlobalISel/regbankselect-AVX512.mir
@@ -6,6 +6,17 @@
   define void @test_mul_vec512() {
     ret void
   }
+  
+  define <16 x i32> @test_load_v16i32_noalign(<16 x i32>* %p1) {
+    %r = load <16 x i32>, <16 x i32>* %p1, align 1
+    ret <16 x i32> %r
+  }
+
+  define void @test_store_v16i32_noalign(<16 x i32> %val, <16 x i32>* %p1) {
+    store <16 x i32> %val, <16 x i32>* %p1, align 1
+    ret void
+  }
+  
 
 ...
 ---
@@ -31,3 +42,47 @@
     RET 0
 
 ...
+---
+name:            test_load_v16i32_noalign
+# CHECK-LABEL: name:  test_load_v16i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: false
+# CHECK:       registers:
+# CHECK-NEXT:    - { id: 0, class: gpr }
+# CHECK-NEXT:    - { id: 1, class: vecr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<16 x s32>) = G_LOAD %0(p0) :: (load 64 from %ir.p1, align 1)
+    %zmm0 = COPY %1(<16 x s32>)
+    RET 0, implicit %zmm0
+
+...
+---
+name:            test_store_v16i32_noalign
+# CHECK-LABEL: name:  test_store_v16i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: false
+# CHECK:       registers:
+# CHECK-NEXT:    - { id: 0, class: vecr }
+# CHECK-NEXT:    - { id: 1, class: gpr }
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %zmm0
+
+    %0(<16 x s32>) = COPY %zmm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<16 x s32>), %1(p0) :: (store 64 into %ir.p1, align 1)
+    RET 0
+
+...
Index: test/CodeGen/X86/GlobalISel/select-memop-v256.mir
===================================================================
--- /dev/null
+++ test/CodeGen/X86/GlobalISel/select-memop-v256.mir
@@ -0,0 +1,188 @@
+# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx                      -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=NO_AVX512VL --check-prefix=NO_AVX512F --check-prefix=AVX
+# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f                  -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=NO_AVX512VL --check-prefix=AVX512ALL --check-prefix=AVX512F
+# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f -mattr=+avx512vl -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=AVX512ALL --check-prefix=AVX512VL
+
+
+--- |
+  define <8 x i32> @test_load_v8i32_noalign(<8 x i32>* %p1) {
+    %r = load <8 x i32>, <8 x i32>* %p1, align 1
+    ret <8 x i32> %r
+  }
+
+  define <8 x i32> @test_load_v8i32_align(<8 x i32>* %p1) {
+    %r = load <8 x i32>, <8 x i32>* %p1, align 32
+    ret <8 x i32> %r
+  }
+
+  define void @test_store_v8i32_noalign(<8 x i32> %val, <8 x i32>* %p1) {
+    store <8 x i32> %val, <8 x i32>* %p1, align 1
+    ret void
+  }
+
+  define void @test_store_v8i32_align(<8 x i32> %val, <8 x i32>* %p1) {
+    store <8 x i32> %val, <8 x i32>* %p1, align 32
+    ret void
+  }
+
+
+...
+---
+name:            test_load_v8i32_noalign
+# ALL-LABEL: name:  test_load_v8i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: true
+# NO_AVX512F:       registers:
+# NO_AVX512F-NEXT:    - { id: 0, class: gr64 }
+# NO_AVX512F-NEXT:    - { id: 1, class: vr256 }
+#
+# AVX512ALL:        registers:
+# AVX512ALL-NEXT:     - { id: 0, class: gr64 }
+# AVX512ALL-NEXT:     - { id: 1, class: vr256x }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: vecr }
+# NO_AVX512F:           %0 = COPY %rdi
+# NO_AVX512F-NEXT:      %1 = VMOVUPSYrm %0, 1, _, 0, _ :: (load 32 from %ir.p1, align 1)
+# NO_AVX512F-NEXT:      %ymm0 = COPY %1
+# NO_AVX512F-NEXT:      RET 0, implicit %ymm0
+#
+# AVX512F:              %0 = COPY %rdi
+# AVX512F-NEXT:         %1 = VMOVUPSZ256rm_NOVLX %0, 1, _, 0, _ :: (load 32 from %ir.p1, align 1)
+# AVX512F-NEXT:         %ymm0 = COPY %1
+# AVX512F-NEXT:         RET 0, implicit %ymm0
+#
+# AVX512VL:             %0 = COPY %rdi
+# AVX512VL-NEXT:        %1 = VMOVUPSZ256rm %0, 1, _, 0, _ :: (load 32 from %ir.p1, align 1)
+# AVX512VL-NEXT:        %ymm0 = COPY %1
+# AVX512VL-NEXT:        RET 0, implicit %ymm0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<8 x s32>) = G_LOAD %0(p0) :: (load 32 from %ir.p1, align 1)
+    %ymm0 = COPY %1(<8 x s32>)
+    RET 0, implicit %ymm0
+
+...
+---
+name:            test_load_v8i32_align
+# ALL-LABEL: name:  test_load_v8i32_align
+alignment:       4
+legalized:       true
+regBankSelected: true
+# NO_AVX512F:       registers:
+# NO_AVX512F-NEXT:    - { id: 0, class: gr64 }
+# NO_AVX512F-NEXT:    - { id: 1, class: vr256 }
+#
+# AVX512ALL:        registers:
+# AVX512ALL-NEXT:     - { id: 0, class: gr64 }
+# AVX512ALL-NEXT:     - { id: 1, class: vr256x }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: vecr }
+# NO_AVX512F:           %0 = COPY %rdi
+# NO_AVX512F-NEXT:      %1 = VMOVAPSYrm %0, 1, _, 0, _ :: (load 32 from %ir.p1)
+# NO_AVX512F-NEXT:      %ymm0 = COPY %1
+# NO_AVX512F-NEXT:      RET 0, implicit %ymm0
+#
+# AVX512F:              %0 = COPY %rdi
+# AVX512F-NEXT:         %1 = VMOVAPSZ256rm_NOVLX %0, 1, _, 0, _ :: (load 32 from %ir.p1)
+# AVX512F-NEXT:         %ymm0 = COPY %1
+# AVX512F-NEXT:         RET 0, implicit %ymm0
+#
+# AVX512VL:             %0 = COPY %rdi
+# AVX512VL-NEXT:        %1 = VMOVAPSZ256rm %0, 1, _, 0, _ :: (load 32 from %ir.p1)
+# AVX512VL-NEXT:        %ymm0 = COPY %1
+# AVX512VL-NEXT:        RET 0, implicit %ymm0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<8 x s32>) = G_LOAD %0(p0) :: (load 32 from %ir.p1)
+    %ymm0 = COPY %1(<8 x s32>)
+    RET 0, implicit %ymm0
+
+...
+---
+name:            test_store_v8i32_noalign
+# ALL-LABEL: name:  test_store_v8i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: true
+# NO_AVX512F:       registers:
+# NO_AVX512F-NEXT:    - { id: 0, class: vr256 }
+# NO_AVX512F-NEXT:    - { id: 1, class: gr64 }
+#
+# AVX512ALL:        registers:
+# AVX512ALL-NEXT:     - { id: 0, class: vr256x }
+# AVX512ALL-NEXT:     - { id: 1, class: gr64 }
+registers:
+  - { id: 0, class: vecr }
+  - { id: 1, class: gpr }
+# NO_AVX512F:           %0 = COPY %ymm0
+# NO_AVX512F-NEXT:      %1 = COPY %rdi
+# NO_AVX512F-NEXT:      VMOVUPSYmr %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1, align 1)
+# NO_AVX512F-NEXT:      RET 0
+#
+# AVX512F:              %0 = COPY %ymm0
+# AVX512F-NEXT:         %1 = COPY %rdi
+# AVX512F-NEXT:         VMOVUPSZ256mr_NOVLX %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1, align 1)
+# AVX512F-NEXT:         RET 0
+#
+# AVX512VL:             %0 = COPY %ymm0
+# AVX512VL-NEXT:        %1 = COPY %rdi
+# AVX512VL-NEXT:        VMOVUPSZ256mr %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1, align 1)
+# AVX512VL-NEXT:        RET 0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %ymm0
+
+    %0(<8 x s32>) = COPY %ymm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<8 x s32>), %1(p0) :: (store 32 into %ir.p1, align 1)
+    RET 0
+
+...
+---
+name:            test_store_v8i32_align
+# ALL-LABEL: name:  test_store_v8i32_align
+alignment:       4
+legalized:       true
+regBankSelected: true
+# NO_AVX512F:       registers:
+# NO_AVX512F-NEXT:    - { id: 0, class: vr256 }
+# NO_AVX512F-NEXT:    - { id: 1, class: gr64 }
+#
+# AVX512ALL:        registers:
+# AVX512ALL-NEXT:     - { id: 0, class: vr256x }
+# AVX512ALL-NEXT:     - { id: 1, class: gr64 }
+registers:
+  - { id: 0, class: vecr }
+  - { id: 1, class: gpr }
+# NO_AVX512F:           %0 = COPY %ymm0
+# NO_AVX512F-NEXT:      %1 = COPY %rdi
+# NO_AVX512F-NEXT:      VMOVAPSYmr %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1)
+# NO_AVX512F-NEXT:      RET 0
+#
+# AVX512F:              %0 = COPY %ymm0
+# AVX512F-NEXT:         %1 = COPY %rdi
+# AVX512F-NEXT:         VMOVAPSZ256mr_NOVLX %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1)
+# AVX512F-NEXT:         RET 0
+#
+# AVX512VL:             %0 = COPY %ymm0
+# AVX512VL-NEXT:        %1 = COPY %rdi
+# AVX512VL-NEXT:        VMOVAPSZ256mr %1, 1, _, 0, _, %0 :: (store 32 into %ir.p1)
+# AVX512VL-NEXT:        RET 0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %ymm0
+
+    %0(<8 x s32>) = COPY %ymm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<8 x s32>), %1(p0) :: (store 32 into %ir.p1)
+    RET 0
+
+...
Index: test/CodeGen/X86/GlobalISel/select-memop-v512.mir
===================================================================
--- /dev/null
+++ test/CodeGen/X86/GlobalISel/select-memop-v512.mir
@@ -0,0 +1,127 @@
+# RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f -global-isel -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=AVX512F
+--- |
+  define <16 x i32> @test_load_v16i32_noalign(<16 x i32>* %p1) {
+    %r = load <16 x i32>, <16 x i32>* %p1, align 1
+    ret <16 x i32> %r
+  }
+
+  define <16 x i32> @test_load_v16i32_align(<16 x i32>* %p1) {
+    %r = load <16 x i32>, <16 x i32>* %p1, align 32
+    ret <16 x i32> %r
+  }
+
+  define void @test_store_v16i32_noalign(<16 x i32> %val, <16 x i32>* %p1) {
+    store <16 x i32> %val, <16 x i32>* %p1, align 1
+    ret void
+  }
+
+  define void @test_store_v16i32_align(<16 x i32> %val, <16 x i32>* %p1) {
+    store <16 x i32> %val, <16 x i32>* %p1, align 32
+    ret void
+  }
+
+...
+---
+name:            test_load_v16i32_noalign
+# AVX512F-LABEL: name:  test_load_v16i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: true
+# AVX512F:      registers:
+# AVX512F-NEXT:   - { id: 0, class: gr64 }
+# AVX512F-NEXT:   - { id: 1, class: vr512 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: vecr }
+# AVX512F:          %0 = COPY %rdi
+# AVX512F-NEXT:     %1 = VMOVUPSZrm %0, 1, _, 0, _ :: (load 64 from %ir.p1, align 1)
+# AVX512F-NEXT:     %zmm0 = COPY %1
+# AVX512F-NEXT:     RET 0, implicit %zmm0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<16 x s32>) = G_LOAD %0(p0) :: (load 64 from %ir.p1, align 1)
+    %zmm0 = COPY %1(<16 x s32>)
+    RET 0, implicit %zmm0
+
+...
+---
+name:            test_load_v16i32_align
+# AVX512F-LABEL: name:  test_load_v16i32_align
+alignment:       4
+legalized:       true
+regBankSelected: true
+# AVX512F:      registers:
+# AVX512F-NEXT:   - { id: 0, class: gr64 }
+# AVX512F-NEXT:   - { id: 1, class: vr512 }
+registers:
+  - { id: 0, class: gpr }
+  - { id: 1, class: vecr }
+# AVX512F:          %0 = COPY %rdi
+# AVX512F-NEXT:     %1 = VMOVUPSZrm %0, 1, _, 0, _ :: (load 64 from %ir.p1, align 32)
+# AVX512F-NEXT:     %zmm0 = COPY %1
+# AVX512F-NEXT:     RET 0, implicit %zmm0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi
+
+    %0(p0) = COPY %rdi
+    %1(<16 x s32>) = G_LOAD %0(p0) :: (load 64 from %ir.p1, align 32)
+    %zmm0 = COPY %1(<16 x s32>)
+    RET 0, implicit %zmm0
+
+...
+---
+name:            test_store_v16i32_noalign
+# AVX512F-LABEL: name:  test_store_v16i32_noalign
+alignment:       4
+legalized:       true
+regBankSelected: true
+# AVX512F:      registers:
+# AVX512F-NEXT:   - { id: 0, class: vr512 }
+# AVX512F-NEXT:   - { id: 1, class: gr64 }
+registers:
+  - { id: 0, class: vecr }
+  - { id: 1, class: gpr }
+# AVX512F:          %0 = COPY %zmm0
+# AVX512F-NEXT:     %1 = COPY %rdi
+# AVX512F-NEXT:     VMOVUPSZmr %1, 1, _, 0, _, %0 :: (store 64 into %ir.p1, align 1)
+# AVX512F-NEXT:     RET 0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %zmm0
+
+    %0(<16 x s32>) = COPY %zmm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<16 x s32>), %1(p0) :: (store 64 into %ir.p1, align 1)
+    RET 0
+
+...
+---
+name:            test_store_v16i32_align
+# AVX512F-LABEL: name:  test_store_v16i32_align
+alignment:       4
+legalized:       true
+regBankSelected: true
+# AVX512F:      registers:
+# AVX512F-NEXT:   - { id: 0, class: vr512 }
+# AVX512F-NEXT:   - { id: 1, class: gr64 }
+registers:
+  - { id: 0, class: vecr }
+  - { id: 1, class: gpr }
+# AVX512F:          %0 = COPY %zmm0
+# AVX512F-NEXT:     %1 = COPY %rdi
+# AVX512F-NEXT:     VMOVUPSZmr %1, 1, _, 0, _, %0 :: (store 64 into %ir.p1, align 32)
+# AVX512F-NEXT:     RET 0
+body:             |
+  bb.1 (%ir-block.0):
+    liveins: %rdi, %zmm0
+
+    %0(<16 x s32>) = COPY %zmm0
+    %1(p0) = COPY %rdi
+    G_STORE %0(<16 x s32>), %1(p0) :: (store 64 into %ir.p1, align 32)
+    RET 0
+
+...