new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36039 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/store-merge.ll b/test/Transforms/InstCombine/store-merge.ll
new file mode 100644 (file)
index 0000000..c457a2f
--- /dev/null
+++ b/test/Transforms/InstCombine/store-merge.ll
@@ -0,0 +1,36 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {ret i32 %storemerge} | wc -l | grep 2
+;; Simple sinking tests
+
+; "if then else"
+define i32 @test1(i1 %C) {
+       %A = alloca i32
+        br i1 %C, label %Cond, label %Cond2
+
+Cond:
+        store i32 -987654321, i32* %A
+        br label %Cont
+
+Cond2:
+       store i32 47, i32* %A
+       br label %Cont
+
+Cont:
+       %V = load i32* %A
+       ret i32 %V
+}
+
+; "if then"
+define i32 @test2(i1 %C) {
+       %A = alloca i32
+       store i32 47, i32* %A
+        br i1 %C, label %Cond, label %Cont
+
+Cond:
+        store i32 -987654321, i32* %A
+        br label %Cont
+
+Cont:
+       %V = load i32* %A
+       ret i32 %V
+}
+