| ; RUN: opt %loadPolly -polly-opt-isl -polly-print-ast -disable-output < %s | FileCheck %s |
| ; |
| ; void jacobi1d(long T, long N, float *A, float *B) { |
| ; long t, i, j; |
| ; for (t = 0; t < T; t++) { |
| ; for (i = 1; i < N - 1; i++) |
| ; B[i] = 0.33333 * (A[i - 1] + A[i] + A[i + 1]); |
| ; for (j = 1; j < N - 1; j++) |
| ; A[j] = 0.33333 * (B[i - 1] + B[i] + B[i + 1]); |
| ; } |
| ; } |
| |
| ; Verify that we do not tile bands that have just a single dimension. |
| |
| ; CHECK: for (int c0 = 0; c0 < T; c0 += 1) { |
| ; CHECK: for (int c1 = 0; c1 < N - 2; c1 += 1) |
| ; CHECK: Stmt_for_body3(c0, c1); |
| ; CHECK: for (int c1 = 0; c1 < N - 2; c1 += 1) |
| ; CHECK: Stmt_for_body15(c0, c1); |
| ; CHECK: } |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| define void @jacobi1d(i64 %T, i64 %N, float* %A, float* %B) { |
| entry: |
| %tmp = add i64 %N, -1 |
| %tmp1 = icmp sgt i64 %tmp, 1 |
| %smax = select i1 %tmp1, i64 %tmp, i64 1 |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc30, %entry |
| %t.0 = phi i64 [ 0, %entry ], [ %inc31, %for.inc30 ] |
| %cmp = icmp slt i64 %t.0, %T |
| br i1 %cmp, label %for.body, label %for.end32 |
| |
| for.body: ; preds = %for.cond |
| br label %for.cond1 |
| |
| for.cond1: ; preds = %for.inc, %for.body |
| %i.0 = phi i64 [ 1, %for.body ], [ %inc, %for.inc ] |
| %sub = add nsw i64 %N, -1 |
| %cmp2 = icmp slt i64 %i.0, %sub |
| br i1 %cmp2, label %for.body3, label %for.end |
| |
| for.body3: ; preds = %for.cond1 |
| %sub4 = add nsw i64 %i.0, -1 |
| %arrayidx = getelementptr inbounds float, float* %A, i64 %sub4 |
| %tmp2 = load float, float* %arrayidx, align 4 |
| %arrayidx5 = getelementptr inbounds float, float* %A, i64 %i.0 |
| %tmp3 = load float, float* %arrayidx5, align 4 |
| %add = fadd float %tmp2, %tmp3 |
| %add6 = add nuw nsw i64 %i.0, 1 |
| %arrayidx7 = getelementptr inbounds float, float* %A, i64 %add6 |
| %tmp4 = load float, float* %arrayidx7, align 4 |
| %add8 = fadd float %add, %tmp4 |
| %conv = fpext float %add8 to double |
| %mul = fmul double %conv, 3.333300e-01 |
| %conv9 = fptrunc double %mul to float |
| %arrayidx10 = getelementptr inbounds float, float* %B, i64 %i.0 |
| store float %conv9, float* %arrayidx10, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body3 |
| %inc = add nuw nsw i64 %i.0, 1 |
| br label %for.cond1 |
| |
| for.end: ; preds = %for.cond1 |
| br label %for.cond11 |
| |
| for.cond11: ; preds = %for.inc27, %for.end |
| %j.0 = phi i64 [ 1, %for.end ], [ %inc28, %for.inc27 ] |
| %sub12 = add nsw i64 %N, -1 |
| %cmp13 = icmp slt i64 %j.0, %sub12 |
| br i1 %cmp13, label %for.body15, label %for.end29 |
| |
| for.body15: ; preds = %for.cond11 |
| %sub16 = add nsw i64 %smax, -1 |
| %arrayidx17 = getelementptr inbounds float, float* %B, i64 %sub16 |
| %tmp5 = load float, float* %arrayidx17, align 4 |
| %arrayidx18 = getelementptr inbounds float, float* %B, i64 %smax |
| %tmp6 = load float, float* %arrayidx18, align 4 |
| %add19 = fadd float %tmp5, %tmp6 |
| %add20 = add nsw i64 %smax, 1 |
| %arrayidx21 = getelementptr inbounds float, float* %B, i64 %add20 |
| %tmp7 = load float, float* %arrayidx21, align 4 |
| %add22 = fadd float %add19, %tmp7 |
| %conv23 = fpext float %add22 to double |
| %mul24 = fmul double %conv23, 3.333300e-01 |
| %conv25 = fptrunc double %mul24 to float |
| %arrayidx26 = getelementptr inbounds float, float* %A, i64 %j.0 |
| store float %conv25, float* %arrayidx26, align 4 |
| br label %for.inc27 |
| |
| for.inc27: ; preds = %for.body15 |
| %inc28 = add nuw nsw i64 %j.0, 1 |
| br label %for.cond11 |
| |
| for.end29: ; preds = %for.cond11 |
| br label %for.inc30 |
| |
| for.inc30: ; preds = %for.end29 |
| %inc31 = add nuw nsw i64 %t.0, 1 |
| br label %for.cond |
| |
| for.end32: ; preds = %for.cond |
| ret void |
| } |