[SLP][NFC]Add a test for bool logic ops reduction, NFC.

Author: alexey-bataev

llvm/test/Transforms/SLPVectorizer/X86/reduction-bool-logic-op-inside.ll

@@ -0,0 +1,19 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
+; RUN: opt -S < %s --passes=slp-vectorizer | FileCheck %s
+
+define i1 @test(i32 %x) {
+; CHECK-LABEL: define i1 @test(
+; CHECK-SAME: i32 [[X:%.*]]) {
+; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[X]], 1
+; CHECK-NEXT:    [[OP_RDX:%.*]] = or i1 poison, [[CMP]]
+; CHECK-NEXT:    ret i1 [[OP_RDX]]
+;
+  %cmp = icmp sgt i32 %x, 1
+  %sel1 = select i1 %cmp, i1 true, i1 poison
+  %sel2 = select i1 %sel1, i1 true, i1 poison
+  %sel3 = select i1 %sel2, i1 true, i1 poison
+  %sel4 = select i1 %cmp, i1 true, i1 poison
+  %ret = or i1 %sel3, %sel4
+  ret i1 %ret
+}
+