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+; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-pc-linux | FileCheck %s
+
+; Check that, if a Win64 ABI function calls a SysV ABI function, all the
+; Win64 nonvolatile registers get saved.
+
+; CHECK-LABEL: bar:
+define x86_64_win64cc void @bar(i32 %a, i32 %b) {
+; CHECK-DAG: pushq %rdi
+; CHECK-DAG: pushq %rsi
+; CHECK-DAG: movaps %xmm6,
+; CHECK-DAG: movaps %xmm7,
+; CHECK-DAG: movaps %xmm8,
+; CHECK-DAG: movaps %xmm9,
+; CHECK-DAG: movaps %xmm10,
+; CHECK-DAG: movaps %xmm11,
+; CHECK-DAG: movaps %xmm12,
+; CHECK-DAG: movaps %xmm13,
+; CHECK-DAG: movaps %xmm14,
+; CHECK-DAG: movaps %xmm15,
+; CHECK: callq foo
+; CHECK: ret
+ call x86_64_sysvcc void @foo(i32 %a, i32 %b)
+ ret void
+}
+
+declare x86_64_sysvcc void @foo(i32 %a, i32 %b)
+