From 687a64222b4c87c825258d4dfeb1f0794e8cb300 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Tue, 11 Jun 2019 18:16:27 +0000
Subject: Vendor import of llvm release_80 branch r363030:
 https://llvm.org/svn/llvm-project/llvm/branches/release_80@363030

---
 test/CodeGen/AVR/hardware-mul.ll | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 test/CodeGen/AVR/hardware-mul.ll

(limited to 'test/CodeGen/AVR/hardware-mul.ll')

diff --git a/test/CodeGen/AVR/hardware-mul.ll b/test/CodeGen/AVR/hardware-mul.ll
new file mode 100644
index 0000000000000..650697857b76b
--- /dev/null
+++ b/test/CodeGen/AVR/hardware-mul.ll
@@ -0,0 +1,30 @@
+; RUN: llc -mattr=mul,movw < %s -march=avr | FileCheck %s
+
+; Tests lowering of multiplication to hardware instructions.
+
+define i8 @mult8(i8 %a, i8 %b) {
+; CHECK-LABEL: mult8:
+; CHECK: muls r22, r24
+; CHECK: clr r1
+; CHECK: mov  r24, r0
+  %mul = mul i8 %b, %a
+  ret i8 %mul
+}
+
+define i16 @mult16(i16 %a, i16 %b) {
+; CHECK-LABEL: mult16:
+; CHECK: muls r22, r25
+; CHECK: mov  r18, r0
+; CHECK: mul  r22, r24
+; CHECK: mov  r19, r0
+; CHECK: mov  r20, r1
+; CHECK: clr r1
+; CHECK: add  r20, r18
+; CHECK: muls r23, r24
+; CHECK: clr r1
+; CHECK: mov  r22, r0
+; CHECK: add  r22, r20
+; :TODO: finish after reworking shift instructions
+  %mul = mul nsw i16 %b, %a
+  ret i16 %mul
+}
-- 
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