[InstCombine] Add pre-commit tests. NFC.

Author: dtcxzyw

llvm/test/Transforms/InstCombine/bit-checks.ll

@@ -1335,6 +1335,23 @@ define i1 @no_masks_with_logical_or(i32 %a, i32 %b, i32 noundef %c) {
   ret i1 %or2
 }
 
+define i1 @no_masks_with_logical_or_commuted(i32 %a, i32 %b, i32 noundef %c) {
+; CHECK-LABEL: @no_masks_with_logical_or_commuted(
+; CHECK-NEXT:    [[CMP1:%.*]] = icmp ne i32 [[A:%.*]], 0
+; CHECK-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[B:%.*]], 63
+; CHECK-NEXT:    [[OR1:%.*]] = select i1 [[CMP1]], i1 true, i1 [[CMP2]]
+; CHECK-NEXT:    [[CMP3:%.*]] = icmp ne i32 [[C:%.*]], 0
+; CHECK-NEXT:    [[OR2:%.*]] = or i1 [[CMP3]], [[OR1]]
+; CHECK-NEXT:    ret i1 [[OR2]]
+;
+  %cmp1 = icmp ne i32 %a, 0
+  %cmp2 = icmp ne i32 %b, 63
+  %or1 = select i1 %cmp1, i1 true, i1 %cmp2
+  %cmp3 = icmp ne i32 %c, 0
+  %or2 = or i1 %cmp3, %or1
+  ret i1 %or2
+}
+
 define i1 @no_masks_with_logical_or2(i32 %a, i32 %b, i32 noundef %c) {
 ; CHECK-LABEL: @no_masks_with_logical_or2(
 ; CHECK-NEXT:    [[CMP2:%.*]] = icmp ne i32 [[B:%.*]], 63