| ; REQUIRES: asserts |
| ; RUN: opt -loop-vectorize -force-ordered-reductions=true -force-vector-width=1 -S < %s -debug 2> %t.debug | FileCheck %s |
| ; RUN: cat %t.debug | FileCheck %s --check-prefix=CHECK-DEBUG |
| |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| ; CHECK-DEBUG: LV: Not interleaving scalar ordered reductions. |
| |
| define void @foo(float* noalias nocapture %dst, float* noalias nocapture readonly %src, i64 %M, i64 %N) { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NOT: vector.body |
| |
| entry: |
| br label %for.body.us |
| |
| for.body.us: ; preds = %entry, %for.cond3 |
| %i.023.us = phi i64 [ %inc8.us, %for.cond3 ], [ 0, %entry ] |
| %arrayidx.us = getelementptr inbounds float, float* %dst, i64 %i.023.us |
| %mul.us = mul nsw i64 %i.023.us, %N |
| br label %for.body3.us |
| |
| for.body3.us: ; preds = %for.body.us, %for.body3.us |
| %0 = phi float [ 0.000000e+00, %for.body.us ], [ %add6.us, %for.body3.us ] |
| %j.021.us = phi i64 [ 0, %for.body.us ], [ %inc.us, %for.body3.us ] |
| %add.us = add nsw i64 %j.021.us, %mul.us |
| %arrayidx4.us = getelementptr inbounds float, float* %src, i64 %add.us |
| %1 = load float, float* %arrayidx4.us, align 4 |
| %add6.us = fadd float %1, %0 |
| %inc.us = add nuw nsw i64 %j.021.us, 1 |
| %exitcond.not = icmp eq i64 %inc.us, %N |
| br i1 %exitcond.not, label %for.cond3, label %for.body3.us |
| |
| for.cond3: ; preds = %for.body3.us |
| %add6.us.lcssa = phi float [ %add6.us, %for.body3.us ] |
| store float %add6.us.lcssa, float* %arrayidx.us, align 4 |
| %inc8.us = add nuw nsw i64 %i.023.us, 1 |
| %exitcond26.not = icmp eq i64 %inc8.us, %M |
| br i1 %exitcond26.not, label %exit, label %for.body.us |
| |
| exit: ; preds = %for.cond3 |
| ret void |
| } |
