another example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92781 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/cast-sext-zext.ll b/test/Transforms/InstCombine/cast-sext-zext.ll
index 9b98949de832192ca2af58ca60949798fdb10e19..678874a279471d90f91725b78c9ccafc73e83325 100644 (file)
--- a/test/Transforms/InstCombine/cast-sext-zext.ll
+++ b/test/Transforms/InstCombine/cast-sext-zext.ll
@@ -11,3 +11,11 @@ entry:
        %4 = load i16* %3, align 2
        ret i16 %4
 }
        %4 = load i16* %3, align 2
        ret i16 %4
 }

+
+define zeroext i64 @t2(i8 zeroext %on_off) nounwind readonly {
+entry:
+       %0 = zext i8 %on_off to i32
+       %1 = add i32 %0, -1
+       %2 = sext i32 %1 to i64
+       ret i64 %2  ;; Should be (add (zext i8 -> i64), -1)
+}