From 9258b76d8d751984ab005059db230265320aa93d Mon Sep 17 00:00:00 2001
From: Bob Wilson <bob.wilson@apple.com>
Date: Tue, 18 Oct 2011 17:34:51 +0000
Subject: Fix incorrect check for sign-extended constant BUILD_VECTOR.
 <rdar://problem/10298332>

llvm-svn: 142371
---
 llvm/test/CodeGen/ARM/vmul.ll | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'llvm/test/CodeGen/ARM/vmul.ll')

diff --git a/llvm/test/CodeGen/ARM/vmul.ll b/llvm/test/CodeGen/ARM/vmul.ll
index 1780d6e66be..61d89bbae83 100644
--- a/llvm/test/CodeGen/ARM/vmul.ll
+++ b/llvm/test/CodeGen/ARM/vmul.ll
@@ -514,3 +514,14 @@ entry:
   store <8 x i8> %10, <8 x i8>* %11, align 8
   ret void
 }
+
+; If one operand has a zero-extend and the other a sign-extend, vmull
+; cannot be used.
+define i16 @vmullWithInconsistentExtensions(<8 x i8> %vec) {
+; CHECK: vmullWithInconsistentExtensions
+; CHECK-NOT: vmull.s8
+  %1 = sext <8 x i8> %vec to <8 x i16>
+  %2 = mul <8 x i16> %1, <i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255, i16 255>
+  %3 = extractelement <8 x i16> %2, i32 0
+  ret i16 %3
+}
-- 
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