Add testcase for -(-A)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2488 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/sub.ll b/test/Transforms/InstCombine/sub.ll
index 15903b678cb6b5e9be6b61c9143084528457230f..fbec5e8a38865abe21d1c185fffb3d566df22529 100644 (file)
--- a/test/Transforms/InstCombine/sub.ll
+++ b/test/Transforms/InstCombine/sub.ll
@@ -18,4 +18,8 @@ int "test2"(int %A) {
        ret int %B
 }
 
-
+int "test3"(int %A) {
+       %B = sub int 0, %A       ; B = -A
+       %C = sub int 0, %B       ; C = -B = A
+       ret int %C
+}