Fix mistake that happened during rebase

Some text was mistakenly removed during the rebase of this PR. This reverts that.

Author: AZero13

llvm/test/Transforms/InstCombine/lshr.ll

@@ -444,6 +444,8 @@ define i32 @mul_splat_fold_wrong_mul_const(i32 %x) {
   ret i32 %t
 }
 
+; Negative test
+
 define i32 @shl_add_lshr_multiuse(i32 %x, i32 %y, i32 %z) {
 ; CHECK-LABEL: @shl_add_lshr_multiuse(
 ; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i32 [[X:%.*]], [[Y:%.*]]
@@ -483,6 +485,8 @@ define i32 @mul_splat_fold_wrong_lshr_const(i32 %x) {
   ret i32 %t
 }
 
+; Negative test
+
 define i32 @mul_splat_fold_no_nuw(i32 %x) {
 ; CHECK-LABEL: @mul_splat_fold_no_nuw(
 ; CHECK-NEXT:    [[M:%.*]] = mul nsw i32 [[X:%.*]], 65537