| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --filter-out-after "^scalar.ph:" --version 3 |
| ; RUN: opt < %s -passes=loop-vectorize,instcombine -enable-histogram-loop-vectorization -sve-gather-overhead=2 -sve-scatter-overhead=2 -debug-only=loop-vectorize -S 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| ;; Based on the following C code: |
| ;; |
| ;; void simple_histogram(int *buckets, unsigned *indices, int N) { |
| ;; for (int i = 0; i < N; ++i) |
| ;; buckets[indices[i]]++; |
| ;; } |
| |
| ;; Confirm finding a histogram operation |
| ; CHECK-LABEL: Checking a loop in 'simple_histogram' |
| ; CHECK: LV: Checking for a histogram on: store i32 %inc, ptr %gep.bucket, align 4 |
| ; CHECK: LV: Found histogram for: store i32 %inc, ptr %gep.bucket, align 4 |
| |
| ;; Confirm cost calculation for runtime checks |
| ; CHECK-LABEL: LV: Checking a loop in 'simple_histogram_rtdepcheck' |
| ; CHECK: Calculating cost of runtime checks: |
| ; CHECK: Total cost of runtime checks: |
| ; CHECK: LV: Minimum required TC for runtime checks to be profitable: |
| |
| ;; Confirm inability to vectorize with potential alias to buckets |
| ; CHECK-LABEL: LV: Checking a loop in 'simple_histogram_unsafe_alias' |
| ; CHECK: LV: Can't vectorize due to memory conflicts |
| ; CHECK-NEXT: LV: Not vectorizing: Cannot prove legality. |
| |
| define void @simple_histogram(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; 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: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP5]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4 |
| ; CHECK-NEXT: [[TMP9:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP11]], 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]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, %N |
| br i1 %exitcond, label %for.exit, label %for.body, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| define void @simple_histogram_inc_param(ptr noalias %buckets, ptr readonly %indices, i64 %N, i32 %incval) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_inc_param( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]], i32 [[INCVAL:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; 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: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP5]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4 |
| ; CHECK-NEXT: [[TMP9:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 [[INCVAL]], <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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, %incval |
| store i32 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| define void @simple_histogram_sub(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_sub( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; 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: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP5]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4 |
| ; CHECK-NEXT: [[TMP9:%.*]] = sext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 -1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 = sext i32 %l.idx to i64 |
| %gep.bucket = getelementptr inbounds i32, ptr %buckets, i64 %idxprom1 |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = sub nsw i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| define void @conditional_histogram(ptr noalias %buckets, ptr readonly %indices, ptr readonly %conds, i64 %N) #0 { |
| ; CHECK-LABEL: define void @conditional_histogram( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], ptr readonly [[CONDS:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP3:%.*]] = shl nuw nsw i64 [[TMP6]], 2 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP3]] |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP5]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4 |
| ; CHECK-NEXT: [[TMP9:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[CONDS]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i32>, ptr [[TMP12]], align 4 |
| ; CHECK-NEXT: [[TMP13:%.*]] = icmp sgt <vscale x 4 x i32> [[WIDE_LOAD1]], splat (i32 5100) |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 1, <vscale x 4 x i1> [[TMP13]]) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP14:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %next ] |
| %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 |
| %condidx = getelementptr inbounds i32, ptr %conds, i64 %iv |
| %conddata = load i32, ptr %condidx, align 4 |
| %ifcond = icmp sgt i32 %conddata, 5100 |
| br i1 %ifcond, label %iftrue, label %next |
| |
| iftrue: |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = add nsw i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, align 4 |
| br label %next |
| |
| next: |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, %N |
| br i1 %exitcond, label %for.exit, label %for.body, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| define void @histogram_8bit(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @histogram_8bit( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP5:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP9:%.*]] = shl nuw nsw i64 [[TMP5]], 2 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP9]] |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[ENTRY:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP3:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP4]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP6]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i8(<vscale x 4 x ptr> [[TMP7]], i8 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw i64 [[IV]], [[TMP4]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[IV_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 i8, ptr %buckets, i64 %idxprom1 |
| %l.bucket = load i8, ptr %gep.bucket, align 4 |
| %inc = add nsw i8 %l.bucket, 1 |
| store i8 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; We don't currently support floating point histograms. |
| define void @histogram_float(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @histogram_float( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; 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: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[IDXPROM1:%.*]] = zext i32 [[TMP0]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds nuw float, ptr [[BUCKETS]], i64 [[IDXPROM1]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[INC:%.*]] = fadd fast float [[TMP1]], 1.000000e+00 |
| ; CHECK-NEXT: store float [[INC]], ptr [[ARRAYIDX2]], 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]], !llvm.loop [[LOOP12:![0-9]+]] |
| ; CHECK: for.exit: |
| ; CHECK-NEXT: ret void |
| ; |
| 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 float, ptr %buckets, i64 %idxprom1 |
| %l.bucket = load float, ptr %gep.bucket, align 4 |
| %inc = fadd fast float %l.bucket, 1.0 |
| store float %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; We don't support histograms with a update value that's not loop-invariant. |
| define void @histogram_varying_increment(ptr noalias %buckets, ptr readonly %indices, ptr readonly %incvals, i64 %N) #0 { |
| ; CHECK-LABEL: define void @histogram_varying_increment( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], ptr readonly [[INCVALS:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; 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: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[IDXPROM1:%.*]] = zext i32 [[TMP0]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds nuw i32, ptr [[BUCKETS]], i64 [[IDXPROM1]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[INCIDX:%.*]] = getelementptr inbounds nuw i32, ptr [[INCVALS]], i64 [[IV]] |
| ; CHECK-NEXT: [[INCVAL:%.*]] = load i32, ptr [[INCIDX]], align 4 |
| ; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP1]], [[INCVAL]] |
| ; CHECK-NEXT: store i32 [[INC]], ptr [[ARRAYIDX2]], 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]], !llvm.loop [[LOOP12]] |
| ; CHECK: for.exit: |
| ; CHECK-NEXT: ret void |
| ; |
| 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 |
| %gep.incvals = getelementptr inbounds i32, ptr %incvals, i64 %iv |
| %l.incval = load i32, ptr %gep.incvals, align 4 |
| %inc = add nsw i32 %l.bucket, %l.incval |
| store i32 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; Test that interleaving works when vectorizing. |
| define void @simple_histogram_user_interleave(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_user_interleave( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 3 |
| ; 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: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 3 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP5]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[TMP15:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[DOTIDX:%.*]] = shl nuw nsw i64 [[TMP15]], 4 |
| ; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds nuw i8, ptr [[TMP8]], i64 [[DOTIDX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP8]], align 4 |
| ; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i32>, ptr [[TMP17]], align 4 |
| ; CHECK-NEXT: [[TMP9:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP19:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD1]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP19]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP21]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, %N |
| br i1 %exitcond, label %for.exit, label %for.body, !llvm.loop !0 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; Test that we can handle more than one GEP index. |
| @idx_array = dso_local local_unnamed_addr global [1048576 x i32] zeroinitializer, align 4 |
| @data_array = dso_local local_unnamed_addr global [1048576 x i32] zeroinitializer, align 4 |
| |
| define void @histogram_array_3op_gep(i64 noundef %N) #0 { |
| ; CHECK-LABEL: define void @histogram_array_3op_gep( |
| ; CHECK-SAME: i64 noundef [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; 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: [[TMP3:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP4]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [1048576 x i32], ptr @idx_array, i64 0, i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <vscale x 4 x i32>, ptr [[TMP5]], align 4 |
| ; CHECK-NEXT: [[TMP14:%.*]] = sext <vscale x 4 x i32> [[WIDE_LOAD1]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [1048576 x i32], ptr @data_array, i64 0, <vscale x 4 x i64> [[TMP14]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP11]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP4]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP16:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] |
| %gep.indices = getelementptr inbounds [1048576 x i32], ptr @idx_array, i64 0, i64 %iv |
| %l.idx = load i32, ptr %gep.indices, align 4 |
| %idxprom5 = sext i32 %l.idx to i64 |
| %gep.bucket = getelementptr inbounds [1048576 x i32], ptr @data_array, i64 0, i64 %idxprom5 |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = add nsw i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; Add a struct into the mix, use a different constant index. |
| ;; { unused, buckets } |
| %somestruct = type { [1048576 x i32], [1048576 x i32] } |
| |
| define void @histogram_array_4op_gep_nonzero_const_idx(i64 noundef %N, ptr readonly %indices, ptr noalias %data.struct) #0 { |
| ; CHECK-LABEL: define void @histogram_array_4op_gep_nonzero_const_idx( |
| ; CHECK-SAME: i64 noundef [[N:%.*]], ptr readonly [[INDICES:%.*]], ptr noalias [[DATA_STRUCT:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP1]] |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[ENTRY:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP3:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP4]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP5]], align 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = sext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [[SOMESTRUCT:%.*]], ptr [[DATA_STRUCT]], i64 1, i32 0, <vscale x 4 x i64> [[TMP6]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP7]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw i64 [[IV]], [[TMP4]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[IV_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_BLOCK:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP18:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 |
| %idxprom5 = sext i32 %l.idx to i64 |
| %gep.bucket = getelementptr inbounds %somestruct, ptr %data.struct, i32 1, i32 0, i64 %idxprom5 |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = add nsw i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; Make sure the histogram intrinsic uses the active lane mask when tail folding. |
| define void @simple_histogram_tailfold(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_tailfold( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP2]], 2 |
| ; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl nuw nsw i64 [[TMP4]], 2 |
| ; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[N]], i64 [[TMP5]]) |
| ; CHECK-NEXT: [[ACTIVE_LANE_MASK_ENTRY:%.*]] = call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 0, i64 [[N]]) |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[ACTIVE_LANE_MASK:%.*]] = phi <vscale x 4 x i1> [ [[ACTIVE_LANE_MASK_ENTRY]], [[VECTOR_PH]] ], [ [[ACTIVE_LANE_MASK_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr [[TMP8]], i32 4, <vscale x 4 x i1> [[ACTIVE_LANE_MASK]], <vscale x 4 x i32> poison) |
| ; CHECK-NEXT: [[TMP9:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP9]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP10]], i32 1, <vscale x 4 x i1> [[ACTIVE_LANE_MASK]]) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], [[TMP1]] |
| ; CHECK-NEXT: [[ACTIVE_LANE_MASK_NEXT]] = call <vscale x 4 x i1> @llvm.get.active.lane.mask.nxv4i1.i64(i64 [[INDEX]], i64 [[TMP6]]) |
| ; CHECK-NEXT: [[TMP11:%.*]] = extractelement <vscale x 4 x i1> [[ACTIVE_LANE_MASK_NEXT]], i64 0 |
| ; CHECK-NEXT: br i1 [[TMP11]], label [[VECTOR_BODY]], label [[MIDDLE_BLOCK:%.*]], !llvm.loop [[LOOP20:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: br label [[FOR_EXIT:%.*]] |
| ; CHECK: 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 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv.next, %N |
| br i1 %exitcond, label %for.exit, label %for.body, !llvm.loop !2 |
| |
| for.exit: |
| ret void |
| } |
| |
| ;; Check that we can still vectorize a histogram when LAA found another dependency |
| ;; that doesn't conflict with the buckets. |
| define void @simple_histogram_rtdepcheck(ptr noalias %buckets, ptr %array, ptr %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_rtdepcheck( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr [[ARRAY:%.*]], ptr [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw i64 [[TMP0]], 2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP1]], i64 8) |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[TMP2]] |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] |
| ; CHECK: vector.memcheck: |
| ; CHECK-NEXT: [[ARRAY1:%.*]] = ptrtoint ptr [[ARRAY]] to i64 |
| ; CHECK-NEXT: [[INDICES2:%.*]] = ptrtoint ptr [[INDICES]] to i64 |
| ; CHECK-NEXT: [[TMP3:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 4 |
| ; CHECK-NEXT: [[TMP5:%.*]] = sub i64 [[ARRAY1]], [[INDICES2]] |
| ; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP5]], [[TMP4]] |
| ; CHECK-NEXT: br i1 [[DIFF_CHECK]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP7:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP8:%.*]] = shl nuw nsw i64 [[TMP7]], 2 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP8]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = call <vscale x 4 x i32> @llvm.stepvector.nxv4i32() |
| ; CHECK-NEXT: [[TMP11:%.*]] = trunc nuw nsw i64 [[TMP8]] to i32 |
| ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[TMP11]], i64 0 |
| ; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[DOTSPLATINSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 4 x i32> [ [[TMP9]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP12]], align 4 |
| ; CHECK-NEXT: [[TMP13:%.*]] = zext <vscale x 4 x i32> [[WIDE_LOAD]] to <vscale x 4 x i64> |
| ; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i32, ptr [[BUCKETS]], <vscale x 4 x i64> [[TMP13]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv4p0.i32(<vscale x 4 x ptr> [[TMP14]], i32 1, <vscale x 4 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds i32, ptr [[ARRAY]], i64 [[INDEX]] |
| ; CHECK-NEXT: store <vscale x 4 x i32> [[VEC_IND]], ptr [[TMP15]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP8]] |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <vscale x 4 x i32> [[VEC_IND]], [[DOTSPLAT]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP22:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: 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 |
| %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 |
| } |
| |
| ;; Make sure we don't vectorize if there's a potential alias between buckets |
| ;; and indices. |
| define void @simple_histogram_unsafe_alias(ptr %buckets, ptr %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_unsafe_alias( |
| ; CHECK-SAME: ptr [[BUCKETS:%.*]], ptr [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; 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: [[ARRAYIDX:%.*]] = getelementptr inbounds nuw i32, ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[IDXPROM1:%.*]] = zext i32 [[TMP12]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds nuw i32, ptr [[BUCKETS]], i64 [[IDXPROM1]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[INC:%.*]] = add nsw i32 [[TMP13]], 1 |
| ; CHECK-NEXT: store i32 [[INC]], ptr [[ARRAYIDX2]], 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 |
| ; |
| 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 |
| %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 |
| } |
| |
| define void @simple_histogram_64b(ptr noalias %buckets, ptr readonly %indices, i64 %N) #0 { |
| ; CHECK-LABEL: define void @simple_histogram_64b( |
| ; CHECK-SAME: ptr noalias [[BUCKETS:%.*]], ptr readonly [[INDICES:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl nuw nsw 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: [[TMP3:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP4:%.*]] = shl nuw nsw i64 [[TMP3]], 1 |
| ; CHECK-NEXT: [[DOTNOT:%.*]] = sub nsw i64 0, [[TMP4]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[N]], [[DOTNOT]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i64, ptr [[INDICES]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 2 x i64>, ptr [[TMP5]], align 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i64, ptr [[BUCKETS]], <vscale x 2 x i64> [[WIDE_LOAD]] |
| ; CHECK-NEXT: call void @llvm.experimental.vector.histogram.add.nxv2p0.i64(<vscale x 2 x ptr> [[TMP6]], i64 1, <vscale x 2 x i1> splat (i1 true)) |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP4]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP24:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] |
| %gep.indices = getelementptr inbounds i64, ptr %indices, i64 %iv |
| %l.idx = load i64, ptr %gep.indices, align 4 |
| %gep.bucket = getelementptr inbounds i64, ptr %buckets, i64 %l.idx |
| %l.bucket = load i64, ptr %gep.bucket, align 4 |
| %inc = add nsw i64 %l.bucket, 1 |
| store i64 %inc, ptr %gep.bucket, 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, !llvm.loop !4 |
| |
| for.exit: |
| ret void |
| } |
| |
| ; The histogram operation generates vectors. This example used to crash |
| ; due to a missing entry in a switch statement. |
| define void @histogram_generates_vectors_crash(ptr %data_array, ptr noalias %indices) { |
| ; CHECK-LABEL: define void @histogram_generates_vectors_crash( |
| ; CHECK-SAME: ptr [[DATA_ARRAY:%.*]], ptr noalias [[INDICES:%.*]]) { |
| ; 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 [1048576 x i32], ptr [[INDICES]], i64 [[IV]] |
| ; CHECK-NEXT: [[L_IDX:%.*]] = load i32, ptr [[GEP_INDICES]], align 4 |
| ; CHECK-NEXT: [[IDXPROM5:%.*]] = sext i32 [[L_IDX]] to i64 |
| ; CHECK-NEXT: [[GEP_BUCKET:%.*]] = getelementptr [1048576 x i32], ptr [[DATA_ARRAY]], i64 [[IDXPROM5]] |
| ; CHECK-NEXT: [[L_BUCKET:%.*]] = load i32, ptr [[GEP_BUCKET]], align 4 |
| ; CHECK-NEXT: [[INC:%.*]] = add i32 [[L_BUCKET]], 1 |
| ; CHECK-NEXT: store i32 [[INC]], ptr [[GEP_BUCKET]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV]], 1 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_EXIT:%.*]], label [[FOR_BODY]] |
| ; CHECK: for.exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.body |
| |
| for.body: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] |
| %gep.indices = getelementptr [1048576 x i32], ptr %indices, i64 %iv |
| %l.idx = load i32, ptr %gep.indices, align 4 |
| %idxprom5 = sext i32 %l.idx to i64 |
| %gep.bucket = getelementptr [1048576 x i32], ptr %data_array, i64 %idxprom5 |
| %l.bucket = load i32, ptr %gep.bucket, align 4 |
| %inc = add i32 %l.bucket, 1 |
| store i32 %inc, ptr %gep.bucket, align 4 |
| %iv.next = add i64 %iv, 1 |
| %exitcond = icmp eq i64 %iv, 1 |
| br i1 %exitcond, label %for.exit, label %for.body |
| |
| for.exit: |
| ret void |
| } |
| |
| attributes #0 = { "target-features"="+sve2" vscale_range(1,16) } |
| |
| !0 = distinct !{!0, !1} |
| !1 = !{!"llvm.loop.interleave.count", i32 2} |
| !2 = distinct !{!2, !3} |
| !3 = !{!"llvm.loop.vectorize.predicate.enable", i1 true} |
| !4 = distinct !{!4, !5} |
| !5 = !{!"llvm.loop.interleave.count", i32 1} |
