| ; RUN: opt -loop-accesses -analyze -enable-new-pm=0 %s 2>&1 | FileCheck %s |
| ; RUN: opt -disable-output -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' %s 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| |
| ; CHECK-LABEL: function 'forked_ptrs_different_base_same_offset': |
| ; CHECK-NEXT: for.body: |
| ; CHECK-NEXT: Report: cannot identify array bounds |
| ; CHECK-NEXT: Dependences: |
| ; CHECK-NEXT: Run-time memory checks: |
| ; CHECK-NEXT: Grouped accesses: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. |
| ; CHECK-NEXT: SCEV assumptions: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Expressions re-written: |
| |
| ;;;; Derived from the following C code |
| ;; void forked_ptrs_different_base_same_offset(float *A, float *B, float *C, int *D) { |
| ;; for (int i=0; i<100; i++) { |
| ;; if (D[i] != 0) { |
| ;; C[i] = A[i]; |
| ;; } else { |
| ;; C[i] = B[i]; |
| ;; } |
| ;; } |
| ;; } |
| |
| define dso_local void @forked_ptrs_different_base_same_offset(float* nocapture readonly %Base1, float* nocapture readonly %Base2, float* nocapture %Dest, i32* nocapture readonly %Preds) { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: |
| ret void |
| |
| for.body: |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1.not = icmp eq i32 %0, 0 |
| %spec.select = select i1 %cmp1.not, float* %Base2, float* %Base1 |
| %.sink.in = getelementptr inbounds float, float* %spec.select, i64 %indvars.iv |
| %.sink = load float, float* %.sink.in, align 4 |
| %1 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv |
| store float %.sink, float* %1, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 100 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| ; CHECK-LABEL: function 'forked_ptrs_same_base_different_offset': |
| ; CHECK-NEXT: for.body: |
| ; CHECK-NEXT: Report: cannot identify array bounds |
| ; CHECK-NEXT: Dependences: |
| ; CHECK-NEXT: Run-time memory checks: |
| ; CHECK-NEXT: Grouped accesses: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. |
| ; CHECK-NEXT: SCEV assumptions: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Expressions re-written: |
| |
| ;;;; Derived from the following C code |
| ;; void forked_ptrs_same_base_different_offset(float *A, float *B, int *C) { |
| ;; int offset; |
| ;; for (int i = 0; i < 100; i++) { |
| ;; if (C[i] != 0) |
| ;; offset = i; |
| ;; else |
| ;; offset = i+1; |
| ;; B[i] = A[offset]; |
| ;; } |
| ;; } |
| |
| define dso_local void @forked_ptrs_same_base_different_offset(float* nocapture readonly %Base, float* nocapture %Dest, i32* nocapture readonly %Preds) { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %i.014 = phi i32 [ 0, %entry ], [ %add, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1.not = icmp eq i32 %0, 0 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %add = add nuw nsw i32 %i.014, 1 |
| %1 = trunc i64 %indvars.iv to i32 |
| %offset.0 = select i1 %cmp1.not, i32 %add, i32 %1 |
| %idxprom213 = zext i32 %offset.0 to i64 |
| %arrayidx3 = getelementptr inbounds float, float* %Base, i64 %idxprom213 |
| %2 = load float, float* %arrayidx3, align 4 |
| %arrayidx5 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv |
| store float %2, float* %arrayidx5, align 4 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 100 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| ;;;; Cases that can be handled by a forked pointer but are not currently allowed. |
| |
| ; CHECK-LABEL: function 'forked_ptrs_uniform_and_strided_forks': |
| ; CHECK-NEXT: for.body: |
| ; CHECK-NEXT: Report: cannot identify array bounds |
| ; CHECK-NEXT: Dependences: |
| ; CHECK-NEXT: Run-time memory checks: |
| ; CHECK-NEXT: Grouped accesses: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. |
| ; CHECK-NEXT: SCEV assumptions: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Expressions re-written: |
| |
| ;;;; Derived from forked_ptrs_same_base_different_offset with a manually |
| ;;;; added uniform offset and a mul to provide a stride |
| |
| define dso_local void @forked_ptrs_uniform_and_strided_forks(float* nocapture readonly %Base, float* nocapture %Dest, i32* nocapture readonly %Preds) { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %i.014 = phi i32 [ 0, %entry ], [ %add, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1.not = icmp eq i32 %0, 0 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %add = add nuw nsw i32 %i.014, 1 |
| %1 = trunc i64 %indvars.iv to i32 |
| %mul = mul i32 %1, 3 |
| %offset.0 = select i1 %cmp1.not, i32 4, i32 %mul |
| %idxprom213 = sext i32 %offset.0 to i64 |
| %arrayidx3 = getelementptr inbounds float, float* %Base, i64 %idxprom213 |
| %2 = load float, float* %arrayidx3, align 4 |
| %arrayidx5 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv |
| store float %2, float* %arrayidx5, align 4 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 100 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |
| |
| ; CHECK-LABEL: function 'forked_ptrs_gather_and_contiguous_forks': |
| ; CHECK-NEXT: for.body: |
| ; CHECK-NEXT: Report: cannot identify array bounds |
| ; CHECK-NEXT: Dependences: |
| ; CHECK-NEXT: Run-time memory checks: |
| ; CHECK-NEXT: Grouped accesses: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop. |
| ; CHECK-NEXT: SCEV assumptions: |
| ; CHECK-EMPTY: |
| ; CHECK-NEXT: Expressions re-written: |
| |
| ;;;; Derived from forked_ptrs_same_base_different_offset with a gather |
| ;;;; added using Preds as an index array in addition to the per-iteration |
| ;;;; condition. |
| |
| define dso_local void @forked_ptrs_gather_and_contiguous_forks(float* nocapture readonly %Base1, float* nocapture readonly %Base2, float* nocapture %Dest, i32* nocapture readonly %Preds) { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: ; preds = %for.body |
| ret void |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %cmp1.not = icmp eq i32 %0, 0 |
| %arrayidx9 = getelementptr inbounds float, float* %Base2, i64 %indvars.iv |
| %idxprom4 = sext i32 %0 to i64 |
| %arrayidx5 = getelementptr inbounds float, float* %Base1, i64 %idxprom4 |
| %.sink.in = select i1 %cmp1.not, float* %arrayidx9, float* %arrayidx5 |
| %.sink = load float, float* %.sink.in, align 4 |
| %1 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv |
| store float %.sink, float* %1, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond.not = icmp eq i64 %indvars.iv.next, 100 |
| br i1 %exitcond.not, label %for.cond.cleanup, label %for.body |
| } |