1 files changed, 45 insertions, 0 deletions
diff --git a/test/CodeGen/X86/byval2.ll b/test/CodeGen/X86/byval2.ll
new file mode 100644
index 00000000000..196efe58e6f
--- /dev/null
+++ b/test/CodeGen/X86/byval2.ll
@@ -0,0 +1,45 @@
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=X64
+; X64-NOT:     movsq
+; X64:     rep
+; X64-NOT:     rep
+; X64:     movsq
+; X64-NOT:     movsq
+; X64:     rep
+; X64-NOT:     rep
+; X64:     movsq
+; X64-NOT:     rep
+; X64-NOT:     movsq
+
+; Win64 has not supported byval yet.
+
+; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X32
+; X32-NOT:     movsl
+; X32:     rep
+; X32-NOT:     rep
+; X32:     movsl
+; X32-NOT:     movsl
+; X32:     rep
+; X32-NOT:     rep
+; X32:     movsl
+; X32-NOT:     rep
+; X32-NOT:     movsl
+
+%struct.s = type { i64, i64, i64, i64, i64, i64, i64, i64,
+                   i64, i64, i64, i64, i64, i64, i64, i64,
+                   i64 }
+
+define void @g(i64 %a, i64 %b, i64 %c) {
+entry:
+	%d = alloca %struct.s, align 16
+	%tmp = getelementptr %struct.s* %d, i32 0, i32 0
+	store i64 %a, i64* %tmp, align 16
+	%tmp2 = getelementptr %struct.s* %d, i32 0, i32 1
+	store i64 %b, i64* %tmp2, align 16
+	%tmp4 = getelementptr %struct.s* %d, i32 0, i32 2
+	store i64 %c, i64* %tmp4, align 16
+	call void @f( %struct.s*byval %d )
+	call void @f( %struct.s*byval %d )
+	ret void
+}
+
+declare void @f(%struct.s* byval)