testcase reduced from pr1107

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33186 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/2007-01-13-ExtCompareMiscompile.ll b/test/Transforms/InstCombine/2007-01-13-ExtCompareMiscompile.ll
new file mode 100644 (file)
index 0000000..0add14b
--- /dev/null
+++ b/test/Transforms/InstCombine/2007-01-13-ExtCompareMiscompile.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep zext
+; PR1107
+
+define i1 %test(i8 %A, i8 %B) {
+       %a = zext i8 %A to i32
+       %b = zext i8 %B to i32
+       %c = icmp sgt i32 %a, %b
+       ret i1 %c
+}