Add a missing SCEV simplification sext(zext x) --> zext x.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123832 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/ScalarEvolution/fold.ll b/test/Analysis/ScalarEvolution/fold.ll
new file mode 100644
index 0000000..202ddd4
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/fold.ll
@@ -0,0 +1,8 @@
+; RUN: opt -analyze -scalar-evolution %s -S | FileCheck %s
+
+define i16 @test(i8 %x) {
+ %A = zext i8 %x to i12
+ %B = sext i12 %A to i16
+; CHECK: zext i8 %x to i16
+ ret i16 %B
+}