1 files changed, 15 insertions, 0 deletions
diff --git a/test/CodeGen/X86/x86-64-arg.ll b/test/CodeGen/X86/x86-64-arg.ll
new file mode 100644
index 0000000..f4fe2f4
--- /dev/null
+++ b/test/CodeGen/X86/x86-64-arg.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | llc | grep {movl %edi, %eax}
+; The input value is already sign extended, don't re-extend it.
+; This testcase corresponds to:
+;   int test(short X) { return (int)X; }
+
+target datalayout = "e-p:64:64"
+target triple = "x86_64-apple-darwin8"
+
+
+define i32 @test(i16 sext  %X) {
+entry:
+        %tmp12 = sext i16 %X to i32             ; <i32> [#uses=1]
+        ret i32 %tmp12
+}
+