Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/test/Transforms/InstCombine/2007-08-02-InfiniteLoop.ll

@@ -0,0 +1,10 @@
+; RUN: opt < %s -instcombine -disable-output
+; PR1594
+
+define i64 @test(i16 %tmp510, i16 %tmp512) {
+	%W = sext i16 %tmp510 to i32           ; <i32> [#uses=1]
+        %X = sext i16 %tmp512 to i32           ; <i32> [#uses=1]
+        %Y = add i32 %W, %X               ; <i32> [#uses=1]
+        %Z = sext i32 %Y to i64          ; <i64> [#uses=1]
+	ret i64 %Z
+}