diff options
Diffstat (limited to 'llvm/test/CodeGen/ARM/vtrn.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/vtrn.ll | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/llvm/test/CodeGen/ARM/vtrn.ll b/llvm/test/CodeGen/ARM/vtrn.ll index 36bcde22731..d42a035faea 100644 --- a/llvm/test/CodeGen/ARM/vtrn.ll +++ b/llvm/test/CodeGen/ARM/vtrn.ll @@ -372,13 +372,18 @@ define <8 x i8> @vtrn_mismatched_builvector1(<8 x i8> %tr0, <8 x i8> %tr1, ret <8 x i8> %rv } -; Negative test that should not generate a vtrn +; The shuffle mask is half a vtrn; we duplicate the half to produce the +; full result. define void @lower_twice_no_vtrn(<4 x i16>* %A, <4 x i16>* %B, <8 x i16>* %C) { entry: ; CHECK-LABEL: lower_twice_no_vtrn ; CHECK: @ BB#0: - ; CHECK-NOT: vtrn - ; CHECK: mov pc, lr + ; CHECK-NEXT: vldr d16, [r1] + ; CHECK-NEXT: vldr d18, [r0] + ; CHECK-NEXT: vtrn.16 d18, d16 + ; CHECK-NEXT: vorr d17, d16, d16 + ; CHECK-NEXT: vst1.64 {d16, d17}, [r2] + ; CHECK-NEXT: mov pc, lr %tmp1 = load <4 x i16>, <4 x i16>* %A %tmp2 = load <4 x i16>, <4 x i16>* %B %0 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 undef, i32 5, i32 3, i32 7, i32 1, i32 5, i32 3, i32 7> @@ -386,13 +391,18 @@ entry: ret void } -; Negative test that should not generate a vtrn +; The shuffle mask is half a vtrn; we duplicate the half to produce the +; full result. define void @upper_twice_no_vtrn(<4 x i16>* %A, <4 x i16>* %B, <8 x i16>* %C) { entry: ; CHECK-LABEL: upper_twice_no_vtrn ; CHECK: @ BB#0: - ; CHECK-NOT: vtrn - ; CHECK: mov pc, lr + ; CHECK-NEXT: vldr d16, [r1] + ; CHECK-NEXT: vldr d18, [r0] + ; CHECK-NEXT: vtrn.16 d18, d16 + ; CHECK-NEXT: vorr d19, d18, d18 + ; CHECK-NEXT: vst1.64 {d18, d19}, [r2] + ; CHECK-NEXT: mov pc, lr %tmp1 = load <4 x i16>, <4 x i16>* %A %tmp2 = load <4 x i16>, <4 x i16>* %B %0 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 0, i32 undef, i32 2, i32 6, i32 0, i32 4, i32 2, i32 6> |
