| ; RUN: opt -basicaa -loop-distribute -enable-loop-distribute -loop-vectorize -force-vector-width=4 \ |
| ; RUN: -verify-loop-info -verify-dom-info -S < %s | FileCheck %s |
| |
| ; If only A and B can alias here, we don't need memchecks to distribute since |
| ; A and B are in the same partition. This used to cause a crash in the |
| ; memcheck generation. |
| ; |
| ; for (i = 0; i < n; i++) { |
| ; A[i + 1] = A[i] * B[i]; |
| ; ------------------------------ |
| ; C[i] = D[i] * E[i]; |
| ; } |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.10.0" |
| |
| define void @f(i32* %a, |
| i32* %b, |
| i32* noalias %c, |
| i32* noalias %d, |
| i32* noalias %e) { |
| entry: |
| br label %for.body |
| |
| ; CHECK-NOT: memcheck: |
| ; CHECK: mul <4 x i32> |
| |
| for.body: ; preds = %for.body, %entry |
| %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] |
| |
| %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind |
| %loadA = load i32, i32* %arrayidxA, align 4 |
| |
| %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind |
| %loadB = load i32, i32* %arrayidxB, align 4 |
| |
| %mulA = mul i32 %loadB, %loadA |
| |
| %add = add nuw nsw i64 %ind, 1 |
| %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add |
| store i32 %mulA, i32* %arrayidxA_plus_4, align 4 |
| |
| %arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind |
| %loadD = load i32, i32* %arrayidxD, align 4 |
| |
| %arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind |
| %loadE = load i32, i32* %arrayidxE, align 4 |
| |
| %mulC = mul i32 %loadD, %loadE |
| |
| %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind |
| store i32 %mulC, i32* %arrayidxC, align 4 |
| |
| %exitcond = icmp eq i64 %add, 20 |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |