diff options
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/ARM/vrev.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/vrev.ll b/llvm/test/CodeGen/ARM/vrev.ll index f0f9e4e339b..89e222714c4 100644 --- a/llvm/test/CodeGen/ARM/vrev.ll +++ b/llvm/test/CodeGen/ARM/vrev.ll @@ -147,3 +147,20 @@ define void @test_with_vcombine(<4 x float>* %v) nounwind { store <4 x float> %tmp8, <4 x float>* %v, align 16 ret void } + +; Test the shuffle of a 4xi16 which exposed a problem with the perfect shuffle table +; entry for vrev. +define void @test_vrev64(<4 x i16>* nocapture %source, <2 x i16>* nocapture %dst) nounwind ssp { +; CHECK: test_vrev64: +; CHECK: vrev64.16 +; CHECK: vext.16 +entry: + %0 = bitcast <4 x i16>* %source to <8 x i16>* + %tmp2 = load <8 x i16>* %0, align 4 + %tmp3 = extractelement <8 x i16> %tmp2, i32 6 + %tmp5 = insertelement <2 x i16> undef, i16 %tmp3, i32 0 + %tmp9 = extractelement <8 x i16> %tmp2, i32 5 + %tmp11 = insertelement <2 x i16> %tmp5, i16 %tmp9, i32 1 + store <2 x i16> %tmp11, <2 x i16>* %dst, align 4 + ret void +} |
