[SLP][NFC]Add a test with incorrect minbitwidth analysis for reduced operands

Author: alexey-bataev

llvm/test/Transforms/SLPVectorizer/X86/operand-is-reduced-val.ll

@@ -0,0 +1,46 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S --passes=slp-vectorizer -mtriple=x86_64-unknown-linux < %s -slp-threshold=-10 | FileCheck %s
+
+define i64 @src(i32 %a) {
+; CHECK-LABEL: define i64 @src(
+; CHECK-SAME: i32 [[A:%.*]]) {
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    [[TMP17:%.*]] = sext i32 [[A]] to i64
+; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <4 x i32> poison, i32 [[A]], i32 0
+; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <4 x i32> [[TMP1]], <4 x i32> poison, <4 x i32> zeroinitializer
+; CHECK-NEXT:    [[TMP3:%.*]] = add <4 x i32> [[TMP2]], <i32 1, i32 1, i32 1, i32 1>
+; CHECK-NEXT:    [[TMP4:%.*]] = sext <4 x i32> [[TMP3]] to <4 x i64>
+; CHECK-NEXT:    [[TMP5:%.*]] = and <4 x i32> [[TMP3]], <i32 1, i32 1, i32 1, i32 1>
+; CHECK-NEXT:    [[TMP6:%.*]] = zext <4 x i32> [[TMP5]] to <4 x i64>
+; CHECK-NEXT:    [[TMP18:%.*]] = call i64 @llvm.vector.reduce.add.v4i64(<4 x i64> [[TMP6]])
+; CHECK-NEXT:    [[TMP16:%.*]] = call i64 @llvm.vector.reduce.add.v4i64(<4 x i64> [[TMP4]])
+; CHECK-NEXT:    [[TMP19:%.*]] = add i64 [[TMP18]], [[TMP16]]
+; CHECK-NEXT:    [[OP_RDX1:%.*]] = add i64 [[TMP19]], 4294967297
+; CHECK-NEXT:    [[TMP21:%.*]] = add i64 [[OP_RDX1]], [[TMP17]]
+; CHECK-NEXT:    ret i64 [[TMP21]]
+;
+entry:
+  %0 = sext i32 %a to i64
+  %1 = add nsw i64 %0, 4294967297
+  %2 = sext i32 %a to i64
+  %3 = add nsw i64 %2, 4294967297
+  %4 = add i64 %3, %1
+  %5 = and i64 %3, 1
+  %6 = add i64 %4, %5
+  %7 = sext i32 %a to i64
+  %8 = add nsw i64 %7, 4294967297
+  %9 = add i64 %8, %6
+  %10 = and i64 %8, 1
+  %11 = add i64 %9, %10
+  %12 = sext i32 %a to i64
+  %13 = add nsw i64 %12, 4294967297
+  %14 = add i64 %13, %11
+  %15 = and i64 %13, 1
+  %16 = add i64 %14, %15
+  %17 = sext i32 %a to i64
+  %18 = add nsw i64 %17, 4294967297
+  %19 = add i64 %18, %16
+  %20 = and i64 %18, 1
+  %21 = add i64 %19, %20
+  ret i64 %21
+}