Add new testcases for instcombine

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3477 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/phi.ll b/test/Transforms/InstCombine/phi.ll
index e4b1381f851a7d66fa8e0a2ec1b53ca7341f5607..52d9157a44a952a390d7e293729ee3586412ab85 100644 (file)
--- a/test/Transforms/InstCombine/phi.ll
+++ b/test/Transforms/InstCombine/phi.ll
@@ -26,3 +26,23 @@ BB2:
         ret int %B
 }
 
+int %test3(int %A, bool %b) {
+BB0: br label %Loop
+
+Loop:
+       %B = phi int [%A, %BB0], [%B, %Loop]    ; PHI has same value always.
+       br bool %b, label %Loop, label %Exit
+Exit:
+       ret int %B
+}
+
+int %test3(bool %b) {
+BB0:  ret int 7                                 ; Loop is unreachable
+
+Loop:
+        %B = phi int [%B, %L2], [%B, %Loop]     ; PHI has same value always.
+        br bool %b, label %L2, label %Loop
+L2:
+       br label %Loop
+}
+