1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2008-01-21-MismatchedCastAndCompare.ll b/test/Transforms/InstCombine/2008-01-21-MismatchedCastAndCompare.ll
new file mode 100644
index 0000000..12bfb80
--- /dev/null
+++ b/test/Transforms/InstCombine/2008-01-21-MismatchedCastAndCompare.ll
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | opt -instcombine | notcast
+; RUN: llvm-as < %s | opt -instcombine | not grep {icmp s}
+; PR1940
+
+define i1 @test1(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
+}
+
+define i1 @test2(i8 %A, i8 %B) {
+        %a = sext i8 %A to i32
+        %b = sext i8 %B to i32
+        %c = icmp ugt i32 %a, %b
+        ret i1 %c
+}