diff --git a/test/Transforms/ScalarizeMaskedMemIntrin/X86/expand-masked-load.ll b/test/Transforms/ScalarizeMaskedMemIntrin/X86/expand-masked-load.ll
new file mode 100644
index 00000000000..d50230a67d8
--- /dev/null
+++ b/test/Transforms/ScalarizeMaskedMemIntrin/X86/expand-masked-load.ll
@@ -0,0 +1,80 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S %s -scalarize-masked-mem-intrin -mtriple=x86_64-linux-gnu | FileCheck %s
+
+define <2 x i64> @scalarize_v2i64(<2 x i64>* %p, <2 x i1> %mask, <2 x i64> %passthru) {
+; CHECK-LABEL: @scalarize_v2i64(
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast <2 x i64>* [[P:%.*]] to i64*
+; CHECK-NEXT:    [[TMP2:%.*]] = extractelement <2 x i1> [[MASK:%.*]], i32 0
+; CHECK-NEXT:    br i1 [[TMP2]], label [[COND_LOAD:%.*]], label [[ELSE:%.*]]
+; CHECK:       cond.load:
+; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i64, i64* [[TMP1]], i32 0
+; CHECK-NEXT:    [[TMP4:%.*]] = load i64, i64* [[TMP3]], align 8
+; CHECK-NEXT:    [[TMP5:%.*]] = insertelement <2 x i64> undef, i64 [[TMP4]], i32 0
+; CHECK-NEXT:    br label [[ELSE]]
+; CHECK:       else:
+; CHECK-NEXT:    [[RES_PHI_ELSE:%.*]] = phi <2 x i64> [ [[TMP5]], [[COND_LOAD]] ], [ undef, [[TMP0:%.*]] ]
+; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <2 x i1> [[MASK]], i32 1
+; CHECK-NEXT:    br i1 [[TMP6]], label [[COND_LOAD1:%.*]], label [[ELSE2:%.*]]
+; CHECK:       cond.load1:
+; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds i64, i64* [[TMP1]], i32 1
+; CHECK-NEXT:    [[TMP8:%.*]] = load i64, i64* [[TMP7]], align 8
+; CHECK-NEXT:    [[TMP9:%.*]] = insertelement <2 x i64> [[RES_PHI_ELSE]], i64 [[TMP8]], i32 1
+; CHECK-NEXT:    br label [[ELSE2]]
+; CHECK:       else2:
+; CHECK-NEXT:    [[RES_PHI_SELECT:%.*]] = phi <2 x i64> [ [[TMP9]], [[COND_LOAD1]] ], [ [[RES_PHI_ELSE]], [[ELSE]] ]
+; CHECK-NEXT:    [[TMP10:%.*]] = select <2 x i1> [[MASK]], <2 x i64> [[RES_PHI_SELECT]], <2 x i64> [[PASSTHRU:%.*]]
+; CHECK-NEXT:    ret <2 x i64> [[TMP10]]
+;
+  %ret = call <2 x i64> @llvm.masked.load.v2i64.p0v2i64(<2 x i64>* %p, i32 8, <2 x i1> %mask, <2 x i64> %passthru)
+  ret <2 x i64> %ret
+}
+
+define <2 x i64> @scalarize_v2i64_ones_mask(<2 x i64>* %p, <2 x i64> %passthru) {
+; CHECK-LABEL: @scalarize_v2i64_ones_mask(
+; CHECK-NEXT:    [[TMP1:%.*]] = load <2 x i64>, <2 x i64>* [[P:%.*]], align 8
+; CHECK-NEXT:    ret <2 x i64> [[TMP1]]
+;
+  %ret = call <2 x i64> @llvm.masked.load.v2i64.p0v2i64(<2 x i64>* %p, i32 8, <2 x i1> <i1 true, i1 true>, <2 x i64> %passthru)
+  ret <2 x i64> %ret
+}
+
+define <2 x i64> @scalarize_v2i64_zero_mask(<2 x i64>* %p, <2 x i64> %passthru) {
+; CHECK-LABEL: @scalarize_v2i64_zero_mask(
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast <2 x i64>* [[P:%.*]] to i64*
+; CHECK-NEXT:    br i1 false, label [[COND_LOAD:%.*]], label [[ELSE:%.*]]
+; CHECK:       cond.load:
+; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[TMP1]], i32 0
+; CHECK-NEXT:    [[TMP3:%.*]] = load i64, i64* [[TMP2]], align 8
+; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x i64> undef, i64 [[TMP3]], i32 0
+; CHECK-NEXT:    br label [[ELSE]]
+; CHECK:       else:
+; CHECK-NEXT:    [[RES_PHI_ELSE:%.*]] = phi <2 x i64> [ [[TMP4]], [[COND_LOAD]] ], [ undef, [[TMP0:%.*]] ]
+; CHECK-NEXT:    br i1 false, label [[COND_LOAD1:%.*]], label [[ELSE2:%.*]]
+; CHECK:       cond.load1:
+; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr inbounds i64, i64* [[TMP1]], i32 1
+; CHECK-NEXT:    [[TMP6:%.*]] = load i64, i64* [[TMP5]], align 8
+; CHECK-NEXT:    [[TMP7:%.*]] = insertelement <2 x i64> [[RES_PHI_ELSE]], i64 [[TMP6]], i32 1
+; CHECK-NEXT:    br label [[ELSE2]]
+; CHECK:       else2:
+; CHECK-NEXT:    [[RES_PHI_SELECT:%.*]] = phi <2 x i64> [ [[TMP7]], [[COND_LOAD1]] ], [ [[RES_PHI_ELSE]], [[ELSE]] ]
+; CHECK-NEXT:    [[TMP8:%.*]] = select <2 x i1> zeroinitializer, <2 x i64> [[RES_PHI_SELECT]], <2 x i64> [[PASSTHRU:%.*]]
+; CHECK-NEXT:    ret <2 x i64> [[TMP8]]
+;
+  %ret = call <2 x i64> @llvm.masked.load.v2i64.p0v2i64(<2 x i64>* %p, i32 8, <2 x i1> <i1 false, i1 false>, <2 x i64> %passthru)
+  ret <2 x i64> %ret
+}
+
+define <2 x i64> @scalarize_v2i64_const_mask(<2 x i64>* %p, <2 x i64> %passthru) {
+; CHECK-LABEL: @scalarize_v2i64_const_mask(
+; CHECK-NEXT:    [[TMP1:%.*]] = bitcast <2 x i64>* [[P:%.*]] to i64*
+; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i64, i64* [[TMP1]], i32 1
+; CHECK-NEXT:    [[TMP3:%.*]] = load i64, i64* [[TMP2]], align 8
+; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <2 x i64> undef, i64 [[TMP3]], i32 1
+; CHECK-NEXT:    [[TMP5:%.*]] = select <2 x i1> <i1 false, i1 true>, <2 x i64> [[TMP4]], <2 x i64> [[PASSTHRU:%.*]]
+; CHECK-NEXT:    ret <2 x i64> [[TMP5]]
+;
+  %ret = call <2 x i64> @llvm.masked.load.v2i64.p0v2i64(<2 x i64>* %p, i32 8, <2 x i1> <i1 false, i1 true>, <2 x i64> %passthru)
+  ret <2 x i64> %ret
+}
+
+declare <2 x i64> @llvm.masked.load.v2i64.p0v2i64(<2 x i64>*, i32, <2 x i1>, <2 x i64>)