1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/R600/mul_uint24.ll b/llvm/test/CodeGen/R600/mul_uint24.ll
index 27b3717f6b7..419f2751b83 100644
--- a/llvm/test/CodeGen/R600/mul_uint24.ll
+++ b/llvm/test/CodeGen/R600/mul_uint24.ll
@@ -46,3 +46,21 @@ entry:
   store i32 %1, i32 addrspace(1)* %out
   ret void
 }
+
+; Multiply with 24-bit inputs and 64-bit output
+; FUNC_LABEL: @mul24_i64
+; EG; MUL_UINT24
+; EG: MULHI
+; SI: V_MUL_U32_U24
+; FIXME: SI support 24-bit mulhi
+; SI: V_MUL_HI_U32
+define void @mul24_i64(i64 addrspace(1)* %out, i64 %a, i64 %b) {
+entry:
+  %0 = shl i64 %a, 40
+  %a_24 = lshr i64 %0, 40
+  %1 = shl i64 %b, 40
+  %b_24 = lshr i64 %1, 40
+  %2 = mul i64 %a_24, %b_24
+  store i64 %2, i64 addrspace(1)* %out
+  ret void
+}