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