--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=slp-vectorizer -S -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
+
+define void @test() {
+; CHECK-LABEL: @test(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[FOR_BODY:%.*]]
+; CHECK: for.body:
+; CHECK-NEXT: [[TMP0:%.*]] = phi <2 x i1> [ [[TMP8:%.*]], [[TMP1:%.*]] ], [ zeroinitializer, [[ENTRY:%.*]] ]
+; CHECK-NEXT: br label [[TMP1]]
+; CHECK: 1:
+; CHECK-NEXT: [[TMP2:%.*]] = zext <2 x i1> [[TMP0]] to <2 x i8>
+; CHECK-NEXT: [[TMP3:%.*]] = or i8 0, 0
+; CHECK-NEXT: [[TMP4:%.*]] = insertelement <2 x i8> <i8 poison, i8 0>, i8 [[TMP3]], i32 0
+; CHECK-NEXT: [[TMP5:%.*]] = and <2 x i8> [[TMP4]], [[TMP2]]
+; CHECK-NEXT: [[TMP6:%.*]] = or <2 x i8> [[TMP5]], zeroinitializer
+; CHECK-NEXT: [[TMP7:%.*]] = icmp ne <2 x i8> [[TMP6]], zeroinitializer
+; CHECK-NEXT: [[TMP8]] = and <2 x i1> [[TMP7]], zeroinitializer
+; CHECK-NEXT: br label [[FOR_BODY]]
+;
+entry:
+ br label %for.body
+
+for.body:
+ %phi1 = phi i1 [ %icmp2, %0 ], [ false, %entry ]
+ %phi2 = phi i1 [ %icmp1, %0 ], [ false, %entry ]
+ br label %0
+
+0:
+ %z1 = zext i1 %phi2 to i8
+ %1 = and i8 0, %z1
+ %2 = and i8 0, 0
+ %3 = or i8 %1, %2
+ %4 = icmp ne i8 %3, 0
+ %icmp1 = and i1 %4, false
+ %5 = or i8 0, 0
+ %z2 = zext i1 %phi1 to i8
+ %6 = and i8 %5, %z2
+ %7 = and i8 0, 0
+ %8 = or i8 %6, %7
+ %9 = icmp ne i8 %8, 0
+ %icmp2 = and i1 %9, false
+ br label %for.body
+}