Require intervals in the range metadata to be in a canonical form: They must
be non contiguous, non overlapping and sorted by the lower end.
While this is technically a backward incompatibility, every frontent currently
produces range metadata with a single interval and we don't have any pass
that merges intervals yet, so no existing bitcode files should be rejected by
this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157741 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Verifier/range-1.ll b/test/Verifier/range-1.ll
index 611933a..af4382e 100644
--- a/test/Verifier/range-1.ll
+++ b/test/Verifier/range-1.ll
@@ -76,3 +76,43 @@
}
!8 = metadata !{i8 0, i8 0}
; CHECK: Range must not be empty!
+
+define i8 @f10(i8* %x) {
+entry:
+ %y = load i8* %x, align 1, !range !9
+ ret i8 %y
+}
+!9 = metadata !{i8 0, i8 2, i8 1, i8 3}
+; CHECK: Intervals are overlapping, contiguous or not in order
+
+define i8 @f11(i8* %x) {
+entry:
+ %y = load i8* %x, align 1, !range !10
+ ret i8 %y
+}
+!10 = metadata !{i8 0, i8 2, i8 2, i8 3}
+; CHECK: Intervals are overlapping, contiguous or not in order
+
+define i8 @f12(i8* %x) {
+entry:
+ %y = load i8* %x, align 1, !range !11
+ ret i8 %y
+}
+!11 = metadata !{i8 1, i8 2, i8 -1, i8 0}
+; CHECK: Intervals are overlapping, contiguous or not in order
+
+define i8 @f13(i8* %x) {
+entry:
+ %y = load i8* %x, align 1, !range !12
+ ret i8 %y
+}
+!12 = metadata !{i8 1, i8 3, i8 5, i8 1}
+; CHECK: First and last intervals are contiguous or overlap
+
+define i8 @f14(i8* %x) {
+entry:
+ %y = load i8* %x, align 1, !range !13
+ ret i8 %y
+}
+!13 = metadata !{i8 1, i8 3, i8 5, i8 2}
+; CHECK: First and last intervals are contiguous or overlap