diff --git a/test/Transforms/InstCombine/icmp.ll b/test/Transforms/InstCombine/icmp.ll
new file mode 100644
index 00000000000..b449002f6f2
--- /dev/null
+++ b/test/Transforms/InstCombine/icmp.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | opt -instcombine -disable-output &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep icmp
+
+define i32 @test1(i32 %X) {
+entry:
+        icmp slt i32 %X, 0              ; <i1>:0 [#uses=1]
+        zext i1 %0 to i32               ; <i32>:1 [#uses=1]
+        ret i32 %1
+}
+
+define i32 @test2(i32 %X) {
+entry:
+        icmp ult i32 %X, -2147483648            ; <i1>:0 [#uses=1]
+        zext i1 %0 to i32               ; <i32>:1 [#uses=1]
+        ret i32 %1
+}
+