[SLP][NFC]Add a test with missing freeze instruction before reduction, NFC

Author: alexey-bataev

llvm/test/Transforms/SLPVectorizer/reudction-or-non-poisoned.ll

@@ -0,0 +1,24 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S --passes=slp-vectorizer < %s | FileCheck %s
+
+define i1 @test(i32 %x, i32 %a, i32 %b, i32 %c, i32 %d) {
+; CHECK-LABEL: define i1 @test(
+; CHECK-SAME: i32 [[X:%.*]], i32 [[A:%.*]], i32 [[B:%.*]], i32 [[C:%.*]], i32 [[D:%.*]]) {
+; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <4 x i32> poison, i32 [[D]], i32 0
+; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <4 x i32> [[TMP1]], i32 [[B]], i32 1
+; CHECK-NEXT:    [[TMP3:%.*]] = insertelement <4 x i32> [[TMP2]], i32 [[C]], i32 2
+; CHECK-NEXT:    [[TMP4:%.*]] = insertelement <4 x i32> [[TMP3]], i32 [[X]], i32 3
+; CHECK-NEXT:    [[TMP5:%.*]] = icmp sgt <4 x i32> [[TMP4]], <i32 1, i32 1, i32 1, i32 1>
+; CHECK-NEXT:    [[TMP6:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP5]])
+; CHECK-NEXT:    ret i1 [[TMP6]]
+;
+  %cmp = icmp sgt i32 %x, 1
+  %cmp2 = icmp sgt i32 %b, 1
+  %cmp3 = icmp sgt i32 %c, 1
+  %cmp4 = icmp sgt i32 %d, 1
+  %sel2 = select i1 %cmp4, i1 true, i1 %cmp2
+  %sel3 = select i1 %sel2, i1 true, i1 %cmp3
+  %sel4 = select i1 %cmp, i1 true, i1 %cmp4
+  %ret = or i1 %sel3, %sel4
+  ret i1 %ret
+}