diff --git a/llvm/test/Transforms/LoopVectorize/AArch64/reverse-load-scatter.ll b/llvm/test/Transforms/LoopVectorize/AArch64/reverse-load-scatter.ll new file mode 100644 index 0000000000000..d51e8ca88ee5d --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/AArch64/reverse-load-scatter.ll @@ -0,0 +1,53 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --filter-out-after "^scalar.ph" --version 6 +; RUN: opt -mtriple=aarch64-linux-gnu -mcpu=neoverse-v2 -passes=loop-vectorize -force-vector-width=2 -scalable-vectorization=on -S < %s | FileCheck %s + +define void @reverse_load_scatter(ptr noalias %src, ptr noalias %dst, i64 %n) { +; CHECK-LABEL: define void @reverse_load_scatter( +; CHECK-SAME: ptr noalias [[SRC:%.*]], ptr noalias [[DST:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() +; CHECK-NEXT: [[TMP1:%.*]] = shl nuw i64 [[TMP0]], 1 +; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP1]] +; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]] +; CHECK: [[VECTOR_PH]]: +; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64() +; CHECK-NEXT: [[TMP3:%.*]] = shl nuw i64 [[TMP2]], 1 +; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP3]] +; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] +; CHECK-NEXT: [[TMP4:%.*]] = sub i64 [[N]], [[N_VEC]] +; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] +; CHECK: [[VECTOR_BODY]]: +; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ] +; CHECK-NEXT: [[OFFSET_IDX:%.*]] = sub i64 [[N]], [[INDEX]] +; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[SRC]], i64 [[OFFSET_IDX]] +; CHECK-NEXT: [[TMP6:%.*]] = sub nuw nsw i64 [[TMP3]], 1 +; CHECK-NEXT: [[TMP7:%.*]] = sub i64 0, [[TMP6]] +; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i64, ptr [[TMP5]], i64 [[TMP7]] +; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load , ptr [[TMP8]], align 8 +; CHECK-NEXT: [[REVERSE:%.*]] = call @llvm.vector.reverse.nxv2i64( [[WIDE_LOAD]]) +; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i64, ptr [[DST]], [[REVERSE]] +; CHECK-NEXT: call void @llvm.masked.scatter.nxv2i64.nxv2p0( [[REVERSE]], align 8 [[TMP9]], splat (i1 true)) +; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP3]] +; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] +; CHECK-NEXT: br i1 [[TMP10]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] +; CHECK: [[MIDDLE_BLOCK]]: +; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] +; CHECK-NEXT: br i1 [[CMP_N]], [[EXIT:label %.*]], label %[[SCALAR_PH]] +; CHECK: [[SCALAR_PH]]: +; +entry: + br label %loop + +loop: + %iv.dec = phi i64 [ %n, %entry ], [ %iv.dec.next, %loop ] + %src.ptr = getelementptr inbounds i64, ptr %src, i64 %iv.dec + %val = load i64, ptr %src.ptr, align 8 + %dst.ptr = getelementptr inbounds i64, ptr %dst, i64 %val + store i64 %val, ptr %dst.ptr, align 8 + %iv.dec.next = add i64 %iv.dec, -1 + %done = icmp eq i64 %iv.dec.next, 0 + br i1 %done, label %exit, label %loop + +exit: + ret void +} diff --git a/llvm/test/Transforms/LoopVectorize/RISCV/reverse-load-scatter.ll b/llvm/test/Transforms/LoopVectorize/RISCV/reverse-load-scatter.ll new file mode 100644 index 0000000000000..3bcb81fd9455a --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/RISCV/reverse-load-scatter.ll @@ -0,0 +1,49 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6 +; RUN: opt -mtriple=riscv64-linux-gnu -mattr=+v,+f -passes=loop-vectorize -force-vector-width=2 -scalable-vectorization=on -S < %s | FileCheck %s + +define void @reverse_load_scatter(ptr noalias %src, ptr noalias %dst, i64 %n) { +; CHECK-LABEL: define void @reverse_load_scatter( +; CHECK-SAME: ptr noalias [[SRC:%.*]], ptr noalias [[DST:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: br label %[[VECTOR_PH:.*]] +; CHECK: [[VECTOR_PH]]: +; CHECK-NEXT: br label %[[VECTOR_BODY:.*]] +; CHECK: [[VECTOR_BODY]]: +; CHECK-NEXT: [[CURRENT_ITERATION_IV:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[CURRENT_ITERATION_NEXT:%.*]], %[[VECTOR_BODY]] ] +; CHECK-NEXT: [[AVL:%.*]] = phi i64 [ [[N]], %[[VECTOR_PH]] ], [ [[AVL_NEXT:%.*]], %[[VECTOR_BODY]] ] +; CHECK-NEXT: [[TMP0:%.*]] = call i32 @llvm.experimental.get.vector.length.i64(i64 [[AVL]], i32 2, i1 true) +; CHECK-NEXT: [[OFFSET_IDX:%.*]] = sub i64 [[N]], [[CURRENT_ITERATION_IV]] +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[SRC]], i64 [[OFFSET_IDX]] +; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[TMP0]] to i64 +; CHECK-NEXT: [[TMP3:%.*]] = sub nuw nsw i64 [[TMP2]], 1 +; CHECK-NEXT: [[TMP4:%.*]] = sub i64 0, [[TMP3]] +; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i64, ptr [[TMP1]], i64 [[TMP4]] +; CHECK-NEXT: [[VP_OP_LOAD:%.*]] = call @llvm.vp.load.nxv2i64.p0(ptr align 8 [[TMP5]], splat (i1 true), i32 [[TMP0]]) +; CHECK-NEXT: [[TMP6:%.*]] = call @llvm.experimental.vp.reverse.nxv2i64( [[VP_OP_LOAD]], splat (i1 true), i32 [[TMP0]]) +; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i64, ptr [[DST]], [[TMP6]] +; CHECK-NEXT: call void @llvm.vp.scatter.nxv2i64.nxv2p0( [[TMP6]], align 8 [[TMP7]], splat (i1 true), i32 [[TMP0]]) +; CHECK-NEXT: [[CURRENT_ITERATION_NEXT]] = add i64 [[TMP2]], [[CURRENT_ITERATION_IV]] +; CHECK-NEXT: [[AVL_NEXT]] = sub nuw i64 [[AVL]], [[TMP2]] +; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[AVL_NEXT]], 0 +; CHECK-NEXT: br i1 [[TMP8]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] +; CHECK: [[MIDDLE_BLOCK]]: +; CHECK-NEXT: br label %[[EXIT:.*]] +; CHECK: [[EXIT]]: +; CHECK-NEXT: ret void +; +entry: + br label %loop + +loop: + %iv.dec = phi i64 [ %n, %entry ], [ %iv.dec.next, %loop ] + %src.ptr = getelementptr inbounds i64, ptr %src, i64 %iv.dec + %val = load i64, ptr %src.ptr, align 8 + %dst.ptr = getelementptr inbounds i64, ptr %dst, i64 %val + store i64 %val, ptr %dst.ptr, align 8 + %iv.dec.next = add i64 %iv.dec, -1 + %done = icmp eq i64 %iv.dec.next, 0 + br i1 %done, label %exit, label %loop + +exit: + ret void +}