make ConstantRange::signExtend() optimal

[oota-llvm.git] / unittests / Support / ConstantRangeTest.cpp

diff --git a/unittests/Support/ConstantRangeTest.cpp b/unittests/Support/ConstantRangeTest.cpp
index 4d6bbf6f8402b745453f81b3f357f12e3e8c9723..3e0a085ed1e7f853288a57fc097d23a45f0cbc70 100644 (file)
--- a/unittests/Support/ConstantRangeTest.cpp
+++ b/unittests/Support/ConstantRangeTest.cpp
@@ -216,6 +216,9 @@ TEST_F(ConstantRangeTest, SExt) {
 
   EXPECT_EQ(ConstantRange(APInt(8, 120), APInt(8, 140)).signExtend(16),
             ConstantRange(APInt(16, -128), APInt(16, 128)));
+
+  EXPECT_EQ(ConstantRange(APInt(16, 0x0200), APInt(16, 0x8000)).signExtend(19),
+            ConstantRange(APInt(19, 0x0200), APInt(19, 0x8000)));
 }
 
 TEST_F(ConstantRangeTest, IntersectWith) {