; Radar 8407927: Make sure that VMOVRRD gets optimized away when the result is
; converted back to be used as a vector type.
-; CHECK: test_vmovrrd_combine
+; CHECK-LABEL: test_vmovrrd_combine:
define <4 x i32> @test_vmovrrd_combine() nounwind {
entry:
br i1 undef, label %bb1, label %bb2
; so they are not split up into i32 values. Radar 8755338.
define void @i64_buildvector(i64* %ptr, <2 x i64>* %vp) nounwind {
; CHECK: i64_buildvector
-; CHECK: vldr.64
+; CHECK: vldr
%t0 = load i64* %ptr, align 4
%t1 = insertelement <2 x i64> undef, i64 %t0, i32 0
store <2 x i64> %t1, <2 x i64>* %vp
define void @i64_insertelement(i64* %ptr, <2 x i64>* %vp) nounwind {
; CHECK: i64_insertelement
-; CHECK: vldr.64
+; CHECK: vldr
%t0 = load i64* %ptr, align 4
%vec = load <2 x i64>* %vp
%t1 = insertelement <2 x i64> %vec, i64 %t0, i32 0
define void @i64_extractelement(i64* %ptr, <2 x i64>* %vp) nounwind {
; CHECK: i64_extractelement
-; CHECK: vstr.64
+; CHECK: vstr
%vec = load <2 x i64>* %vp
%t1 = extractelement <2 x i64> %vec, i32 0
store i64 %t1, i64* %ptr
ret void
}
+; The following test was hitting an assertion in the DAG combiner when
+; constant folding the multiply because the "sext undef" was translated to
+; a BUILD_VECTOR with i32 0 operands, which did not match the i16 operands
+; of the other BUILD_VECTOR.
+define i16 @foldBuildVectors() {
+ %1 = sext <8 x i8> undef 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
+}
+
+; Test that we are generating vrev and vext for reverse shuffles of v8i16
+; shuffles.
+; CHECK-LABEL: reverse_v8i16:
+define void @reverse_v8i16(<8 x i16>* %loadaddr, <8 x i16>* %storeaddr) {
+ %v0 = load <8 x i16>* %loadaddr
+ ; CHECK: vrev64.16
+ ; CHECK: vext.16
+ %v1 = shufflevector <8 x i16> %v0, <8 x i16> undef,
+ <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
+ store <8 x i16> %v1, <8 x i16>* %storeaddr
+ ret void
+}
+
+; Test that we are generating vrev and vext for reverse shuffles of v16i8
+; shuffles.
+; CHECK-LABEL: reverse_v16i8:
+define void @reverse_v16i8(<16 x i8>* %loadaddr, <16 x i8>* %storeaddr) {
+ %v0 = load <16 x i8>* %loadaddr
+ ; CHECK: vrev64.8
+ ; CHECK: vext.8
+ %v1 = shufflevector <16 x i8> %v0, <16 x i8> undef,
+ <16 x i32> <i32 15, i32 14, i32 13, i32 12, i32 11, i32 10, i32 9, i32 8,
+ i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
+ store <16 x i8> %v1, <16 x i8>* %storeaddr
+ ret void
+}
+
+; <rdar://problem/14170854>.
+; vldr cannot handle unaligned loads.
+; Fall back to vld1.32, which can, instead of using the general purpose loads
+; followed by a costly sequence of instructions to build the vector register.
+; CHECK-LABEL: t3:
+; CHECK: vld1.32 {[[REG:d[0-9]+]][0]}
+; CHECK: vld1.32 {[[REG]][1]}
+; CHECK: vmull.u8 q{{[0-9]+}}, [[REG]], [[REG]]
+define <8 x i16> @t3(i8 zeroext %xf, i8* nocapture %sp0, i8* nocapture %sp1, i32* nocapture %outp) {
+entry:
+ %pix_sp0.0.cast = bitcast i8* %sp0 to i32*
+ %pix_sp0.0.copyload = load i32* %pix_sp0.0.cast, align 1
+ %pix_sp1.0.cast = bitcast i8* %sp1 to i32*
+ %pix_sp1.0.copyload = load i32* %pix_sp1.0.cast, align 1
+ %vecinit = insertelement <2 x i32> undef, i32 %pix_sp0.0.copyload, i32 0
+ %vecinit1 = insertelement <2 x i32> %vecinit, i32 %pix_sp1.0.copyload, i32 1
+ %0 = bitcast <2 x i32> %vecinit1 to <8 x i8>
+ %vmull.i = tail call <8 x i16> @llvm.arm.neon.vmullu.v8i16(<8 x i8> %0, <8 x i8> %0)
+ ret <8 x i16> %vmull.i
+}
+
+; Function Attrs: nounwind readnone
+declare <8 x i16> @llvm.arm.neon.vmullu.v8i16(<8 x i8>, <8 x i8>)
+
+; Check that (insert_vector_elt (load)) => (vector_load).
+; Thus, check that scalar_to_vector do not interfer with that.
+define <8 x i16> @t4(i8* nocapture %sp0) {
+; CHECK-LABEL: t4:
+; CHECK: vld1.32 {{{d[0-9]+}}[0]}, [r0]
+entry:
+ %pix_sp0.0.cast = bitcast i8* %sp0 to i32*
+ %pix_sp0.0.copyload = load i32* %pix_sp0.0.cast, align 1
+ %vec = insertelement <2 x i32> undef, i32 %pix_sp0.0.copyload, i32 0
+ %0 = bitcast <2 x i32> %vec to <8 x i8>
+ %vmull.i = tail call <8 x i16> @llvm.arm.neon.vmullu.v8i16(<8 x i8> %0, <8 x i8> %0)
+ ret <8 x i16> %vmull.i
+}
+
+; Make sure vector load is used for all three loads.
+; Lowering to build vector was breaking the single use property of the load of
+; %pix_sp0.0.copyload.
+; CHECK-LABEL: t5:
+; CHECK: vld1.32 {[[REG1:d[0-9]+]][1]}, [r0]
+; CHECK: vorr [[REG2:d[0-9]+]], [[REG1]], [[REG1]]
+; CHECK: vld1.32 {[[REG1]][0]}, [r1]
+; CHECK: vld1.32 {[[REG2]][0]}, [r2]
+; CHECK: vmull.u8 q{{[0-9]+}}, [[REG1]], [[REG2]]
+define <8 x i16> @t5(i8* nocapture %sp0, i8* nocapture %sp1, i8* nocapture %sp2) {
+entry:
+ %pix_sp0.0.cast = bitcast i8* %sp0 to i32*
+ %pix_sp0.0.copyload = load i32* %pix_sp0.0.cast, align 1
+ %pix_sp1.0.cast = bitcast i8* %sp1 to i32*
+ %pix_sp1.0.copyload = load i32* %pix_sp1.0.cast, align 1
+ %pix_sp2.0.cast = bitcast i8* %sp2 to i32*
+ %pix_sp2.0.copyload = load i32* %pix_sp2.0.cast, align 1
+ %vec = insertelement <2 x i32> undef, i32 %pix_sp0.0.copyload, i32 1
+ %vecinit1 = insertelement <2 x i32> %vec, i32 %pix_sp1.0.copyload, i32 0
+ %vecinit2 = insertelement <2 x i32> %vec, i32 %pix_sp2.0.copyload, i32 0
+ %0 = bitcast <2 x i32> %vecinit1 to <8 x i8>
+ %1 = bitcast <2 x i32> %vecinit2 to <8 x i8>
+ %vmull.i = tail call <8 x i16> @llvm.arm.neon.vmullu.v8i16(<8 x i8> %0, <8 x i8> %1)
+ ret <8 x i16> %vmull.i
+}
+
+; <rdar://problem/14989896> Make sure we manage to truncate a vector from an
+; illegal type to a legal type.
+define <2 x i8> @test_truncate(<2 x i128> %in) {
+; CHECK-LABEL: test_truncate:
+; CHECK: mov [[BASE:r[0-9]+]], sp
+; CHECK-NEXT: vld1.32 {[[REG1:d[0-9]+]][0]}, {{\[}}[[BASE]]:32]
+; CHECK-NEXT: add [[BASE2:r[0-9]+]], [[BASE]], #4
+; CHECK-NEXT: vld1.32 {[[REG1]][1]}, {{\[}}[[BASE2]]:32]
+; REG2 Should map on the same Q register as REG1, i.e., REG2 = REG1 - 1, but we
+; cannot express that.
+; CHECK-NEXT: vmov.32 [[REG2:d[0-9]+]][0], r0
+; CHECK-NEXT: vmov.32 [[REG2]][1], r1
+; The Q register used here should match floor(REG1/2), but we cannot express that.
+; CHECK-NEXT: vmovn.i64 [[RES:d[0-9]+]], q{{[0-9]+}}
+; CHECK-NEXT: vmov r0, r1, [[RES]]
+entry:
+ %res = trunc <2 x i128> %in to <2 x i8>
+ ret <2 x i8> %res
+}
projects / oota-llvm.git / blobdiff