diff --git a/test/Regression/CodeGen/X86/fast-cc-merge-stack-adj.ll b/test/Regression/CodeGen/X86/fast-cc-merge-stack-adj.ll
new file mode 100644
index 00000000000..c1729864616
--- /dev/null
+++ b/test/Regression/CodeGen/X86/fast-cc-merge-stack-adj.ll
@@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel -enable-x86-fastcc  | grep 'add %ESP, 8'
+
+declare fastcc void %func(int %X, long %Y)
+
+fastcc void %caller(int, long) {
+	tail call fastcc void %func(int 1234567890, long 0)
+	ret void
+}