forked from OSchip/llvm-project
96 lines
3.5 KiB
LLVM
96 lines
3.5 KiB
LLVM
; RUN: opt %loadPolly -basicaa -polly-scops -analyze < %s \
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; RUN: -polly-precise-inbounds | FileCheck %s
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;
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; void foo(float A[restrict][20], float B[restrict][20], long n, long m,
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; long p) {
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; for (long i = 0; i < n; i++)
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; for (long j = 0; j < m; j++)
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; A[i][j] = i + j;
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; for (long i = 0; i < m; i++)
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; for (long j = 0; j < p; j++)
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; B[i][j] = i + j;
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; }
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; This code is within bounds either if m and p are smaller than the array sizes,
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; but also if only p is smaller than the size of the second B dimension and n
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; is such that the first loop is never executed and consequently A is never
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; accessed. In this case the value of m does not matter.
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; CHECK: Assumed Context:
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; CHECK-NEXT: [n, m, p] -> { : p <= 20 and (n <= 0 or (n > 0 and m <= 20)) }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @foo([20 x float]* noalias %A, [20 x float]* noalias %B, i64 %n, i64 %m, i64 %p) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc5, %entry
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%i.0 = phi i64 [ 0, %entry ], [ %inc6, %for.inc5 ]
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%cmp = icmp slt i64 %i.0, %n
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br i1 %cmp, label %for.body, label %for.end7
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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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%j.0 = phi i64 [ 0, %for.body ], [ %inc, %for.inc ]
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%cmp2 = icmp slt i64 %j.0, %m
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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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%add = add nsw i64 %i.0, %j.0
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%conv = sitofp i64 %add to float
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%arrayidx4 = getelementptr inbounds [20 x float], [20 x float]* %A, i64 %i.0, i64 %j.0
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store float %conv, float* %arrayidx4, 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 nsw i64 %j.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.inc5
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for.inc5: ; preds = %for.end
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%inc6 = add nsw i64 %i.0, 1
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br label %for.cond
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for.end7: ; preds = %for.cond
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br label %for.cond9
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for.cond9: ; preds = %for.inc25, %for.end7
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%i8.0 = phi i64 [ 0, %for.end7 ], [ %inc26, %for.inc25 ]
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%cmp10 = icmp slt i64 %i8.0, %m
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br i1 %cmp10, label %for.body12, label %for.end27
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for.body12: ; preds = %for.cond9
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br label %for.cond14
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for.cond14: ; preds = %for.inc22, %for.body12
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%j13.0 = phi i64 [ 0, %for.body12 ], [ %inc23, %for.inc22 ]
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%cmp15 = icmp slt i64 %j13.0, %p
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br i1 %cmp15, label %for.body17, label %for.end24
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for.body17: ; preds = %for.cond14
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%add18 = add nsw i64 %i8.0, %j13.0
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%conv19 = sitofp i64 %add18 to float
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%arrayidx21 = getelementptr inbounds [20 x float], [20 x float]* %B, i64 %i8.0, i64 %j13.0
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store float %conv19, float* %arrayidx21, align 4
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br label %for.inc22
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for.inc22: ; preds = %for.body17
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%inc23 = add nsw i64 %j13.0, 1
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br label %for.cond14
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for.end24: ; preds = %for.cond14
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br label %for.inc25
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for.inc25: ; preds = %for.end24
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%inc26 = add nsw i64 %i8.0, 1
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br label %for.cond9
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for.end27: ; preds = %for.cond9
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ret void
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}
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