| ; RUN: opt -mtriple=thumbv8.1m.main-arm-eabihf -mattr=+mve.fp -loop-vectorize -tail-predication=enabled -S < %s | \ |
| ; RUN: FileCheck %s |
| |
| ; Test that ARMTTIImpl::preferPredicateOverEpilogue triggers tail-folding. |
| |
| define dso_local void @f1(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i32* noalias nocapture readonly %C, i32 %N) { |
| ; CHECK-LABEL: f1( |
| ; CHECK: entry: |
| ; CHECK: @llvm.get.active.lane.mask |
| ; CHECK: } |
| entry: |
| %cmp8 = icmp sgt i32 %N, 0 |
| br i1 %cmp8, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| ret void |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| %i.09 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %B, i32 %i.09 |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx1 = getelementptr inbounds i32, i32* %C, i32 %i.09 |
| %1 = load i32, i32* %arrayidx1, align 4 |
| %add = add nsw i32 %1, %0 |
| %arrayidx2 = getelementptr inbounds i32, i32* %A, i32 %i.09 |
| store i32 %add, i32* %arrayidx2, align 4 |
| %inc = add nuw nsw i32 %i.09, 1 |
| %exitcond.not = icmp eq i32 %inc, %N |
| br i1 %exitcond.not, label %for.cond.cleanup.loopexit, label %for.body |
| } |
| |
| define dso_local void @f32_reduction(float* nocapture readonly %Input, i32 %N, float* nocapture %Output) { |
| ; CHECK-LABEL: f32_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp6 = icmp eq i32 %N, 0 |
| br i1 %cmp6, label %while.end, label %while.body.preheader |
| |
| while.body.preheader: ; preds = %entry |
| br label %while.body |
| |
| while.body: ; preds = %while.body.preheader, %while.body |
| %blkCnt.09 = phi i32 [ %dec, %while.body ], [ %N, %while.body.preheader ] |
| %sum.08 = phi float [ %add, %while.body ], [ 0.000000e+00, %while.body.preheader ] |
| %Input.addr.07 = phi float* [ %incdec.ptr, %while.body ], [ %Input, %while.body.preheader ] |
| %incdec.ptr = getelementptr inbounds float, float* %Input.addr.07, i32 1 |
| %0 = load float, float* %Input.addr.07, align 4 |
| %add = fadd fast float %0, %sum.08 |
| %dec = add i32 %blkCnt.09, -1 |
| %cmp = icmp eq i32 %dec, 0 |
| br i1 %cmp, label %while.end.loopexit, label %while.body |
| |
| while.end.loopexit: ; preds = %while.body |
| %add.lcssa = phi float [ %add, %while.body ] |
| br label %while.end |
| |
| while.end: ; preds = %while.end.loopexit, %entry |
| %sum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add.lcssa, %while.end.loopexit ] |
| %conv = uitofp i32 %N to float |
| %div = fdiv fast float %sum.0.lcssa, %conv |
| store float %div, float* %Output, align 4 |
| ret void |
| } |
| |
| define dso_local void @f16_reduction(half* nocapture readonly %Input, i32 %N, half* nocapture %Output) { |
| ; CHECK-LABEL: f16_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp6 = icmp eq i32 %N, 0 |
| br i1 %cmp6, label %while.end, label %while.body.preheader |
| |
| while.body.preheader: ; preds = %entry |
| br label %while.body |
| |
| while.body: ; preds = %while.body.preheader, %while.body |
| %blkCnt.09 = phi i32 [ %dec, %while.body ], [ %N, %while.body.preheader ] |
| %sum.08 = phi half [ %add, %while.body ], [ 0.000000e+00, %while.body.preheader ] |
| %Input.addr.07 = phi half* [ %incdec.ptr, %while.body ], [ %Input, %while.body.preheader ] |
| %incdec.ptr = getelementptr inbounds half, half* %Input.addr.07, i32 1 |
| %0 = load half, half* %Input.addr.07, align 2 |
| %add = fadd fast half %0, %sum.08 |
| %dec = add i32 %blkCnt.09, -1 |
| %cmp = icmp eq i32 %dec, 0 |
| br i1 %cmp, label %while.end.loopexit, label %while.body |
| |
| while.end.loopexit: ; preds = %while.body |
| %add.lcssa = phi half [ %add, %while.body ] |
| br label %while.end |
| |
| while.end: ; preds = %while.end.loopexit, %entry |
| %sum.0.lcssa = phi half [ 0.000000e+00, %entry ], [ %add.lcssa, %while.end.loopexit ] |
| %conv = uitofp i32 %N to half |
| %div = fdiv fast half %sum.0.lcssa, %conv |
| store half %div, half* %Output, align 2 |
| ret void |
| } |
| |
| define dso_local void @mixed_f32_i32_reduction(float* nocapture readonly %fInput, i32* nocapture readonly %iInput, i32 %N, float* nocapture %fOutput, i32* nocapture %iOutput) { |
| ; CHECK-LABEL: mixed_f32_i32_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp15 = icmp eq i32 %N, 0 |
| br i1 %cmp15, label %while.end, label %while.body.preheader |
| |
| while.body.preheader: |
| br label %while.body |
| |
| while.body: |
| %blkCnt.020 = phi i32 [ %dec, %while.body ], [ %N, %while.body.preheader ] |
| %isum.019 = phi i32 [ %add2, %while.body ], [ 0, %while.body.preheader ] |
| %fsum.018 = phi float [ %add, %while.body ], [ 0.000000e+00, %while.body.preheader ] |
| %fInput.addr.017 = phi float* [ %incdec.ptr, %while.body ], [ %fInput, %while.body.preheader ] |
| %iInput.addr.016 = phi i32* [ %incdec.ptr1, %while.body ], [ %iInput, %while.body.preheader ] |
| %incdec.ptr = getelementptr inbounds float, float* %fInput.addr.017, i32 1 |
| %incdec.ptr1 = getelementptr inbounds i32, i32* %iInput.addr.016, i32 1 |
| %0 = load i32, i32* %iInput.addr.016, align 4 |
| %add2 = add nsw i32 %0, %isum.019 |
| %1 = load float, float* %fInput.addr.017, align 4 |
| %add = fadd fast float %1, %fsum.018 |
| %dec = add i32 %blkCnt.020, -1 |
| %cmp = icmp eq i32 %dec, 0 |
| br i1 %cmp, label %while.end.loopexit, label %while.body |
| |
| while.end.loopexit: |
| %add.lcssa = phi float [ %add, %while.body ] |
| %add2.lcssa = phi i32 [ %add2, %while.body ] |
| %phitmp = sitofp i32 %add2.lcssa to float |
| br label %while.end |
| |
| while.end: |
| %fsum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add.lcssa, %while.end.loopexit ] |
| %isum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %phitmp, %while.end.loopexit ] |
| %conv = uitofp i32 %N to float |
| %div = fdiv fast float %fsum.0.lcssa, %conv |
| store float %div, float* %fOutput, align 4 |
| %div5 = fdiv fast float %isum.0.lcssa, %conv |
| %conv6 = fptosi float %div5 to i32 |
| store i32 %conv6, i32* %iOutput, align 4 |
| ret void |
| } |
| |
| define dso_local i32 @i32_mul_reduction(i32* noalias nocapture readonly %B, i32 %N) { |
| ; CHECK-LABEL: i32_mul_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp6 = icmp sgt i32 %N, 0 |
| br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: |
| %mul.lcssa = phi i32 [ %mul, %for.body ] |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: |
| %S.0.lcssa = phi i32 [ 1, %entry ], [ %mul.lcssa, %for.cond.cleanup.loopexit ] |
| ret i32 %S.0.lcssa |
| |
| for.body: |
| %i.08 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %S.07 = phi i32 [ %mul, %for.body ], [ 1, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %B, i32 %i.08 |
| %0 = load i32, i32* %arrayidx, align 4 |
| %mul = mul nsw i32 %0, %S.07 |
| %inc = add nuw nsw i32 %i.08, 1 |
| %exitcond = icmp eq i32 %inc, %N |
| br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body |
| } |
| |
| define dso_local i32 @i32_or_reduction(i32* noalias nocapture readonly %B, i32 %N) { |
| ; CHECK-LABEL: i32_or_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp6 = icmp sgt i32 %N, 0 |
| br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| %or.lcssa = phi i32 [ %or, %for.body ] |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| %S.0.lcssa = phi i32 [ 1, %entry ], [ %or.lcssa, %for.cond.cleanup.loopexit ] |
| ret i32 %S.0.lcssa |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| %i.08 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %S.07 = phi i32 [ %or, %for.body ], [ 1, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %B, i32 %i.08 |
| %0 = load i32, i32* %arrayidx, align 4 |
| %or = or i32 %0, %S.07 |
| %inc = add nuw nsw i32 %i.08, 1 |
| %exitcond = icmp eq i32 %inc, %N |
| br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body |
| } |
| |
| define dso_local i32 @i32_and_reduction(i32* noalias nocapture readonly %A, i32 %N, i32 %S) { |
| ; CHECK-LABEL: i32_and_reduction( |
| ; CHECK: vector.body: |
| ; CHECK: @llvm.masked.load |
| ; CHECK: br i1 %{{.*}}, label {{.*}}, label %vector.body |
| entry: |
| %cmp5 = icmp sgt i32 %N, 0 |
| br i1 %cmp5, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| %and.lcssa = phi i32 [ %and, %for.body ] |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| %S.addr.0.lcssa = phi i32 [ %S, %entry ], [ %and.lcssa, %for.cond.cleanup.loopexit ] |
| ret i32 %S.addr.0.lcssa |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| %i.07 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %S.addr.06 = phi i32 [ %and, %for.body ], [ %S, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.07 |
| %0 = load i32, i32* %arrayidx, align 4 |
| %and = and i32 %0, %S.addr.06 |
| %inc = add nuw nsw i32 %i.07, 1 |
| %exitcond = icmp eq i32 %inc, %N |
| br i1 %exitcond, label %for.cond.cleanup.loopexit, label %for.body |
| } |