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diff --git a/test/CodeGen/MBlaze/mul64.ll b/test/CodeGen/MBlaze/mul64.ll
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+++ b/test/CodeGen/MBlaze/mul64.ll
@@ -0,0 +1,23 @@
+; Ensure that multiplication is lowered to function calls when the 64-bit
+; multiplier unit is not available in the hardware and that function calls
+; are not used when the 64-bit multiplier unit is available in the hardware.
+;
+; RUN: llc < %s -march=mblaze | FileCheck -check-prefix=FUN %s
+; RUN: llc < %s -march=mblaze -mattr=+mul,+mul64 | \
+; RUN:      FileCheck -check-prefix=MUL %s
+
+define i64 @test_i64(i64 %a, i64 %b) {
+    ; FUN:        test_i64:
+    ; MUL:        test_i64:
+
+    %tmp.1 = mul i64 %a, %b
+    ; FUN-NOT:    mul
+    ; FUN:        brlid
+    ; MUL-NOT:    brlid
+    ; MUL:        mulh
+    ; MUL:        mul
+
+    ret i64 %tmp.1
+    ; FUN:        rtsd
+    ; MUL:        rtsd
+}