| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --filter-out-after "^scalar.ph:" --version 3 |
| ; RUN: opt < %s -mattr=+sve2 -passes=loop-vectorize,instcombine -enable-histogram-loop-vectorization -sve-gather-overhead=2 -sve-scatter-overhead=2 -force-vector-interleave=1 -max-dependences=2 -debug-only=loop-vectorize,loop-accesses -S 2>&1 | FileCheck %s |
| ; RUN: opt < %s -mattr=+sve2 -passes=loop-vectorize,instcombine -enable-histogram-loop-vectorization -sve-gather-overhead=2 -sve-scatter-overhead=2 -force-vector-interleave=1 -debug-only=loop-vectorize,loop-accesses -S 2>&1 | FileCheck %s --check-prefix=NORMAL_DEP_LIMIT |
| ; REQUIRES: asserts |
| |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| ;; Check that we don't crash if LAA gives up on recording dependences and |
| ;; returns a null pointer. |
| |
| ; CHECK-LABEL: LAA: Checking a loop in 'many_deps' |
| ; CHECK: Too many dependences, stopped recording |
| ; CHECK: LV: Can't vectorize due to memory conflicts |
| ; CHECK: LV: Not vectorizing: Cannot prove legality. |
| |
| define void @many_deps(ptr noalias %buckets, ptr %array, ptr %indices, ptr %other, i64 %N) { |
| ; CHECK-LABEL: define void @many_deps( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr [[ARRAY:%.*]], ptr [[INDICES:%.*]], ptr [[OTHER:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[GEP_INDICES:%.*]] = getelementptr inbounds nuw i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[L_IDX:%.*]] = load i32, ptr [[GEP_INDICES]], align 4 |
| ; CHECK-NEXT: [[IDXPROM1:%.*]] = zext i32 [[L_IDX]] to i64 |
| ; CHECK-NEXT: [[GEP_BUCKET:%.*]] = getelementptr inbounds nuw i32, ptr [[BUCKETS]], i64 [[IDXPROM1]] |
| ; CHECK-NEXT: [[L_BUCKET:%.*]] = load i32, ptr [[GEP_BUCKET]], align 4 |
| ; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[L_BUCKET]], 1 |
| ; CHECK-NEXT: store i32 [[INC]], ptr [[GEP_BUCKET]], align 4 |
| ; CHECK-NEXT: [[IDX_ADDR:%.*]] = getelementptr inbounds nuw i32, ptr [[ARRAY]], i64 [[IV]] |
| ; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i32 |
| ; CHECK-NEXT: store i32 [[IV_TRUNC]], ptr [[IDX_ADDR]], align 4 |
| ; CHECK-NEXT: [[GEP_OTHER:%.*]] = getelementptr inbounds nuw i32, ptr [[OTHER]], i64 [[IV]] |
| ; CHECK-NEXT: [[L_OTHER:%.*]] = load i32, ptr [[GEP_OTHER]], align 4 |
| ; CHECK-NEXT: [[ADD_OTHER:%.*]] = add i32 [[L_OTHER]], [[IV_TRUNC]] |
| ; CHECK-NEXT: store i32 [[ADD_OTHER]], ptr [[GEP_OTHER]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_EXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.exit: |
| ; CHECK-NEXT: ret void |
| ; |
| ; NORMAL_DEP_LIMIT-LABEL: define void @many_deps( |
| ; NORMAL_DEP_LIMIT-SAME: ptr noalias [[BUCKETS:%.*]], ptr [[ARRAY:%.*]], ptr [[INDICES:%.*]], ptr [[OTHER:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { |
| ; NORMAL_DEP_LIMIT-NEXT: entry: |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP1:%.*]] = shl nuw i64 [[TMP0]], 2 |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP2:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP1]], i64 8) |
| ; NORMAL_DEP_LIMIT-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP2]] |
| ; NORMAL_DEP_LIMIT-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] |
| ; NORMAL_DEP_LIMIT: vector.memcheck: |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP3:%.*]] = shl i64 [[N]], 2 |
| ; NORMAL_DEP_LIMIT-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[ARRAY]], i64 [[TMP3]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[OTHER]], i64 [[TMP3]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[INDICES]], i64 [[TMP3]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[ARRAY]], [[SCEVGEP1]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[OTHER]], [[SCEVGEP]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND03:%.*]] = icmp ult ptr [[ARRAY]], [[SCEVGEP2]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND14:%.*]] = icmp ult ptr [[INDICES]], [[SCEVGEP]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[FOUND_CONFLICT5:%.*]] = and i1 [[BOUND03]], [[BOUND14]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[CONFLICT_RDX:%.*]] = or i1 [[FOUND_CONFLICT]], [[FOUND_CONFLICT5]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND06:%.*]] = icmp ult ptr [[OTHER]], [[SCEVGEP2]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[BOUND17:%.*]] = icmp ult ptr [[INDICES]], [[SCEVGEP1]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[FOUND_CONFLICT8:%.*]] = and i1 [[BOUND06]], [[BOUND17]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[CONFLICT_RDX9:%.*]] = or i1 [[CONFLICT_RDX]], [[FOUND_CONFLICT8]] |
| ; NORMAL_DEP_LIMIT-NEXT: br i1 [[CONFLICT_RDX9]], label [[SCALAR_PH]], label [[ENTRY:%.*]] |
| ; NORMAL_DEP_LIMIT: vector.ph: |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP8:%.*]] = shl nuw i64 [[TMP4]], 2 |
| ; NORMAL_DEP_LIMIT-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP8]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP7:%.*]] = call <vscale x 4 x i32> @llvm.stepvector.nxv4i32() |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP8]] to i32 |
| ; NORMAL_DEP_LIMIT-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[TMP9]], i64 0 |
| ; NORMAL_DEP_LIMIT-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[DOTSPLATINSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer |
| ; NORMAL_DEP_LIMIT-NEXT: br label [[FOR_BODY:%.*]] |
| ; NORMAL_DEP_LIMIT: vector.body: |
| ; NORMAL_DEP_LIMIT-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; NORMAL_DEP_LIMIT-NEXT: [[VEC_IND:%.*]] = phi <vscale x 4 x i32> [ [[TMP7]], [[ENTRY]] ], [ [[VEC_IND_NEXT:%.*]], [[FOR_BODY]] ] |
| ; NORMAL_DEP_LIMIT-NEXT: [[GEP_INDICES:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[IV]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[GEP_INDICES]], align 4, !alias.scope [[META0:![0-9]+]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP11:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP11]] |
| ; NORMAL_DEP_LIMIT-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP12]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP13:%.*]] = getelementptr inbounds i32, ptr [[ARRAY]], i64 [[IV]] |
| ; NORMAL_DEP_LIMIT-NEXT: store <vscale x 4 x i32> [[VEC_IND]], ptr [[TMP13]], align 4, !alias.scope [[META3:![0-9]+]], !noalias [[META5:![0-9]+]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[OTHER]], i64 [[IV]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[WIDE_LOAD10:%.*]] = load <vscale x 4 x i32>, ptr [[TMP14]], align 4, !alias.scope [[META7:![0-9]+]], !noalias [[META0]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP15:%.*]] = add <vscale x 4 x i32> [[WIDE_LOAD10]], [[VEC_IND]] |
| ; NORMAL_DEP_LIMIT-NEXT: store <vscale x 4 x i32> [[TMP15]], ptr [[TMP14]], align 4, !alias.scope [[META7]], !noalias [[META0]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[IV_NEXT]] = add nuw i64 [[IV]], [[TMP8]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[VEC_IND_NEXT]] = add <vscale x 4 x i32> [[VEC_IND]], [[DOTSPLAT]] |
| ; NORMAL_DEP_LIMIT-NEXT: [[TMP16:%.*]] = icmp eq i64 [[IV_NEXT]], [[N_VEC]] |
| ; NORMAL_DEP_LIMIT-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; NORMAL_DEP_LIMIT: middle.block: |
| ; NORMAL_DEP_LIMIT-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_MOD_VF]], 0 |
| ; NORMAL_DEP_LIMIT-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; NORMAL_DEP_LIMIT: scalar.ph: |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] |
| %gep.indices = getelementptr inbounds i32, ptr %indices, i64 %iv |
| %l.idx = load i32, ptr %gep.indices, align 4 |
| %idxprom1 = zext i32 %l.idx to i64 |
| %gep.bucket = getelementptr inbounds i32, ptr %buckets, i64 %idxprom1 |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = add nsw i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, align 4 |
| %idx.addr = getelementptr inbounds i32, ptr %array, i64 %iv |
| %iv.trunc = trunc i64 %iv to i32 |
| store i32 %iv.trunc, ptr %idx.addr, align 4 |
| %gep.other = getelementptr inbounds i32, ptr %other, i64 %iv |
| %l.other = load i32, ptr %gep.other, align 4 |
| %add.other = add i32 %l.other, %iv.trunc |
| store i32 %add.other, ptr %gep.other, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, %N |
| br i1 %exitcond, label %for.exit, label %for.body |
| |
| for.exit: |
| ret void |
| } |
