'i8 full-range' sign extended to i16 should equal [-128, 128) not [-128, 127).
Found by Daniel Dunbar and KLEE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/ConstantRangeTest.cpp b/unittests/Support/ConstantRangeTest.cpp
index 2b073d8..f929425 100644
--- a/unittests/Support/ConstantRangeTest.cpp
+++ b/unittests/Support/ConstantRangeTest.cpp
@@ -175,7 +175,7 @@
   ConstantRange SSome = Some.signExtend(20);
   ConstantRange SWrap = Wrap.signExtend(20);
   EXPECT_EQ(SFull, ConstantRange(APInt(20, INT16_MIN, true),
-                                 APInt(20, INT16_MAX, true)));
+                                 APInt(20, INT16_MAX + 1, true)));
   EXPECT_TRUE(SEmpty.isEmptySet());
   EXPECT_EQ(SOne, ConstantRange(APInt(One.getLower()).sext(20),
                                 APInt(One.getUpper()).sext(20)));