The ARM disassembler did not handle the alignment correctly for VLD*DUP* instructions

[oota-llvm.git] / test / CodeGen / ARM / 2009-12-02-vtrn-undef.ll

diff --git a/test/CodeGen/ARM/2009-12-02-vtrn-undef.ll b/test/CodeGen/ARM/2009-12-02-vtrn-undef.ll
index a737591bd9fc962cfc1db63e6a93726b16021aeb..f89a5de77b3f5b63e62b1775179ad90e80cd0bdb 100644 (file)
--- a/test/CodeGen/ARM/2009-12-02-vtrn-undef.ll
+++ b/test/CodeGen/ARM/2009-12-02-vtrn-undef.ll
@@ -6,7 +6,7 @@ target triple = "armv7-apple-darwin10"
 %struct.int16x8_t = type { <8 x i16> }
 %struct.int16x8x2_t = type { [2 x %struct.int16x8_t] }
 
-define arm_apcscc void @t(%struct.int16x8x2_t* noalias nocapture sret %agg.result, <8 x i16> %tmp.0, %struct.int16x8x2_t* nocapture %dst) nounwind {
+define void @t(%struct.int16x8x2_t* noalias nocapture sret %agg.result, <8 x i16> %tmp.0, %struct.int16x8x2_t* nocapture %dst) nounwind {
 entry:
 ;CHECK: vtrn.16
   %0 = shufflevector <8 x i16> %tmp.0, <8 x i16> undef, <8 x i32> <i32 0, i32 0, i32 2, i32 2, i32 4, i32 4, i32 6, i32 6>
@@ -17,3 +17,17 @@ entry:
   store <8 x i16> %1, <8 x i16>* %agg.result12.1.0, align 16
   ret void
 }
+
+; Radar 8290937: Ignore undef shuffle indices.
+; CHECK: t2
+; CHECK: vtrn.16
+define void @t2(%struct.int16x8x2_t* nocapture %ptr, <4 x i16> %a.0, <4 x i16> %b.0) nounwind {
+entry:
+  %0 = shufflevector <4 x i16> %a.0, <4 x i16> undef, <8 x i32> <i32 0, i32 0, i32 2, i32 2, i32 undef, i32 undef, i32 undef, i32 undef>
+  %1 = shufflevector <4 x i16> %a.0, <4 x i16> undef, <8 x i32> <i32 1, i32 1, i32 3, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
+  %ptr26.0 = getelementptr inbounds %struct.int16x8x2_t* %ptr, i32 0, i32 0, i32 0, i32 0
+  store <8 x i16> %0, <8 x i16>* %ptr26.0, align 16
+  %ptr20.1.0 = getelementptr inbounds %struct.int16x8x2_t* %ptr, i32 0, i32 0, i32 1, i32 0
+  store <8 x i16> %1, <8 x i16>* %ptr20.1.0, align 16
+  ret void
+}