[SLP][NFC]Add a test to show poison propagation in mixed (non)bool

logical ops reduction, NFC.

Author: alexey-bataev

llvm/test/Transforms/SLPVectorizer/X86/bool-logical-op-reduction-with-poison.ll

@@ -0,0 +1,39 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
+; RUN: opt -S --passes=slp-vectorizer < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
+
+define i1 @test(i32 %0, i32 %1, i32 %p) {
+; CHECK-LABEL: define i1 @test(
+; CHECK-SAME: i32 [[TMP0:%.*]], i32 [[TMP1:%.*]], i32 [[P:%.*]]) {
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i32 [[TMP0]], 0
+; CHECK-NEXT:    [[TMP2:%.*]] = insertelement <4 x i32> poison, i32 [[TMP1]], i32 0
+; CHECK-NEXT:    [[TMP3:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> poison, <4 x i32> zeroinitializer
+; CHECK-NEXT:    [[TMP4:%.*]] = shl <4 x i32> zeroinitializer, [[TMP3]]
+; CHECK-NEXT:    [[TMP5:%.*]] = icmp slt <4 x i32> [[TMP4]], zeroinitializer
+; CHECK-NEXT:    [[CMP6:%.*]] = icmp slt i32 0, [[P]]
+; CHECK-NEXT:    [[TMP6:%.*]] = freeze <4 x i1> [[TMP5]]
+; CHECK-NEXT:    [[TMP7:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP6]])
+; CHECK-NEXT:    [[OP_RDX:%.*]] = select i1 [[TMP7]], i1 true, i1 [[CMP6]]
+; CHECK-NEXT:    [[OP_RDX1:%.*]] = select i1 [[CMP1]], i1 true, i1 [[CMP1]]
+; CHECK-NEXT:    [[OP_RDX2:%.*]] = select i1 [[OP_RDX]], i1 true, i1 [[OP_RDX1]]
+; CHECK-NEXT:    ret i1 [[OP_RDX2]]
+;
+entry:
+  %cmp1 = icmp sgt i32 %0, 0
+  %shl1 = shl i32 0, %1
+  %cmp2 = icmp slt i32 %shl1, 0
+  %2 = select i1 %cmp1, i1 true, i1 %cmp2
+  %shl2 = shl i32 0, %1
+  %cmp3 = icmp slt i32 %shl2, 0
+  %3 = select i1 %2, i1 true, i1 %cmp3
+  %shl3 = shl i32 0, %1
+  %cmp4 = icmp slt i32 %shl3, 0
+  %4 = select i1 %3, i1 true, i1 %cmp4
+  %shl4 = shl i32 0, %1
+  %cmp5 = icmp slt i32 %shl4, 0
+  %5 = select i1 %4, i1 true, i1 %cmp5
+  %cmp6 = icmp slt i32 0, %p
+  %sel = select i1 %cmp1, i1 true, i1 %cmp6
+  %6 = or i1 %sel, %5
+  ret i1 %6
+}