new testcase for PR1253

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35611 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/xor2.ll b/test/Transforms/InstCombine/xor2.ll
new file mode 100644 (file)
index 0000000..9b6a3fe
--- /dev/null
+++ b/test/Transforms/InstCombine/xor2.ll
@@ -0,0 +1,19 @@
+; This test makes sure that these instructions are properly eliminated.
+;
+
+; RUN: llvm-as < %s | opt -instcombine -disable-output &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'xor '
+
+; PR1253
+define i1 @test0(i32 %A) {
+       %B = xor i32 %A, -2147483648
+       %C = icmp sgt i32 %B, -1
+       ret i1 %C
+}
+
+define i1 @test1(i32 %A) {
+       %B = xor i32 %A, 12345
+       %C = icmp slt i32 %B, 0
+       ret i1 %C
+}
+