Automerge: [orc-rt] Add ExecutorAddrRange::contains overload for ranges. (#163458)

Can be used to test that one address range is fully contained within
another. This is an orc-rt counterpart to aa731e1, which added the
same operation to llvm::orc::ExecutorAddrRange.

Author: lhames

orc-rt/include/orc-rt/ExecutorAddress.h

@@ -204,6 +204,9 @@ struct ExecutorAddrRange {
   constexpr bool contains(ExecutorAddr Addr) const noexcept {
     return Start <= Addr && Addr < End;
   }
+  constexpr bool contains(const ExecutorAddrRange &Other) const noexcept {
+    return (Other.Start >= Start && Other.End <= End);
+  }
   constexpr bool overlaps(const ExecutorAddrRange &Other) const noexcept {
     return !(Other.End <= Start || End <= Other.Start);
   }

orc-rt/unittests/ExecutorAddressTest.cpp

@@ -97,10 +97,16 @@ TEST(ExecutorAddrTest, AddrRanges) {
   EXPECT_FALSE(R1.contains(A0));
   EXPECT_FALSE(R1.contains(A2));
 
+  EXPECT_TRUE(R3.contains(R0));  // True for singleton range at start.
+  EXPECT_TRUE(R3.contains(R1));  // True for singleton range at end.
+  EXPECT_FALSE(R3.contains(R2)); // False for non-overlaping singleton range.
+  EXPECT_FALSE(R3.contains(R4)); // False for overlapping, uncontained range.
+
   EXPECT_FALSE(R1.overlaps(R0));
   EXPECT_FALSE(R1.overlaps(R2));
   EXPECT_TRUE(R1.overlaps(R3));
   EXPECT_TRUE(R1.overlaps(R4));
+  EXPECT_TRUE(R3.overlaps(R4));
 }
 
 TEST(ExecutorAddrTest, Hashable) {