[NFC][SCEV] Add test with 'or' with no common bits set

Author: LebedevRI

llvm/test/Analysis/ScalarEvolution/add-like-or.ll

@@ -0,0 +1,16 @@
+; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
+; RUN: opt < %s -S -analyze -scalar-evolution | FileCheck %s
+
+define i8 @or-of-constant-with-no-common-bits-set(i8 %x, i8 %y) {
+; CHECK-LABEL: 'or-of-constant-with-no-common-bits-set'
+; CHECK-NEXT:  Classifying expressions for: @or-of-constant-with-no-common-bits-set
+; CHECK-NEXT:    %t0 = shl i8 %x, 2
+; CHECK-NEXT:    --> (4 * %x) U: [0,-3) S: [-128,125)
+; CHECK-NEXT:    %r = or i8 %t0, 3
+; CHECK-NEXT:    --> (3 + (4 * %x))<nuw><nsw> U: [3,0) S: [-125,-128)
+; CHECK-NEXT:  Determining loop execution counts for: @or-of-constant-with-no-common-bits-set
+;
+  %t0 = shl i8 %x, 2
+  %r = or i8 %t0, 3
+  ret i8 %r
+}