diff --git a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
--- a/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -4187,8 +4187,8 @@
       unsigned VectorizedCnt = 0;
       unsigned ScatterVectorizeCnt = 0;
       const unsigned Sz = DL->getTypeSizeInBits(E->getMainOp()->getType());
-      for (unsigned MinVF = getMinVecRegSize() / (2 * Sz); VF >= MinVF;
-           VF /= 2) {
+      for (unsigned MinVF = std::max(2U, getMinVecRegSize() / (2 * Sz));
+           VF >= MinVF; VF /= 2) {
         for (unsigned Cnt = StartIdx, End = VL.size(); Cnt + VF <= End;
              Cnt += VF) {
           ArrayRef<Value *> Slice = VL.slice(Cnt, VF);
diff --git a/llvm/test/Transforms/SLPVectorizer/AArch64/loads-gather-crash.ll b/llvm/test/Transforms/SLPVectorizer/AArch64/loads-gather-crash.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/SLPVectorizer/AArch64/loads-gather-crash.ll
@@ -0,0 +1,32 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S -slp-vectorizer -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s
+
+define void @foo() local_unnamed_addr {
+; CHECK-LABEL: @foo(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[TMP0:%.*]] = load volatile double, double* poison, align 8
+; CHECK-NEXT:    [[TMP1:%.*]] = load volatile double, double* poison, align 8
+; CHECK-NEXT:    [[TMP2:%.*]] = load volatile double, double* poison, align 8
+; CHECK-NEXT:    [[TMP3:%.*]] = load volatile double, double* poison, align 8
+; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
+; CHECK:       for.body:
+; CHECK-NEXT:    [[D30_0734:%.*]] = phi double [ undef, [[FOR_BODY]] ], [ [[TMP0]], [[ENTRY:%.*]] ]
+; CHECK-NEXT:    [[D01_0733:%.*]] = phi double [ undef, [[FOR_BODY]] ], [ [[TMP1]], [[ENTRY]] ]
+; CHECK-NEXT:    [[D11_0732:%.*]] = phi double [ undef, [[FOR_BODY]] ], [ [[TMP2]], [[ENTRY]] ]
+; CHECK-NEXT:    [[D21_0731:%.*]] = phi double [ undef, [[FOR_BODY]] ], [ [[TMP3]], [[ENTRY]] ]
+; CHECK-NEXT:    br label [[FOR_BODY]]
+;
+entry:
+  %0 = load volatile double, double* poison, align 8
+  %1 = load volatile double, double* poison, align 8
+  %2 = load volatile double, double* poison, align 8
+  %3 = load volatile double, double* poison, align 8
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %entry
+  %d30.0734 = phi double [ undef, %for.body ], [ %0, %entry ]
+  %d01.0733 = phi double [ undef, %for.body ], [ %1, %entry ]
+  %d11.0732 = phi double [ undef, %for.body ], [ %2, %entry ]
+  %d21.0731 = phi double [ undef, %for.body ], [ %3, %entry ]
+  br label %for.body
+}