Add testcases for negated multiplies

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5739 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/sub.ll b/test/Transforms/InstCombine/sub.ll
index 0dd2b7d930c42a156ff9a33e24c7e09aa8325875..184886c9be2beba93d9a39993803afbd754df45d 100644 (file)
--- a/test/Transforms/InstCombine/sub.ll
+++ b/test/Transforms/InstCombine/sub.ll
@@ -59,3 +59,16 @@ int %test9(int %A) {
         ret int %C
 }
 
+int %test10(int %A, int %B) {    ; -A*-B == A*B
+       %C = sub int 0, %A
+       %D = sub int 0, %B
+       %E = mul int %C, %D
+       ret int %E
+}
+
+int %test10(int %A) {    ; -A *c1 == A * -c1
+       %C = sub int 0, %A
+       %E = mul int %C, 7
+       ret int %E
+}
+