forked from OSchip/llvm-project
87 lines
3.0 KiB
LLVM
87 lines
3.0 KiB
LLVM
; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
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;
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; We have privatization dependences from a textually later statement to a
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; textually earlier one, but the dependences still go forward in time.
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;
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; CHECK: RAW dependences:
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; CHECK-DAG: Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : i0 <= 97 and i0 >= 0 and o1 <= 99 and o1 >= 0
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; CHECK-DAG: Stmt_S1[i0] -> Stmt_S3[i0] : i0 <= 98 and i0 >= 0
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; CHECK: WAR dependences:
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; CHECK: { }
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; CHECK: WAW dependences:
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; CHECK-DAG: Stmt_S3[i0] -> Stmt_S2[1 + i0, o1] : i0 <= 97 and i0 >= 0 and o1 <= 99 and o1 >= 0
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; CHECK-DAG: Stmt_S1[i0] -> Stmt_S3[i0] : i0 <= 98 and i0 >= 0
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; CHECK: Reduction dependences:
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; CHECK: { Stmt_S2[i0, i1] -> Stmt_S2[i0, 1 + i1] : i0 <= 98 and i0 >= 0 and i1 <= 98 and i1 >= 0 }
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;
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; void f(int *sum) {
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; int i, j;
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; for (i = 0; i < 99; i++) {
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; S1: sum[i + 1] += 42;
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; for (j = 0; j < 100; j++)
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; S2: sum[i] += i * j;
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; S3: sum[i + 1] += 7;
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; }
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; }
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;
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
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define void @f(i32* %sum) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc10, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ]
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%exitcond1 = icmp ne i32 %i.0, 99
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br i1 %exitcond1, label %for.body, label %for.end12
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for.body: ; preds = %for.cond
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br label %S1
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S1: ; preds = %for.body
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%add = add nsw i32 %i.0, 1
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%arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add
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%tmp = load i32, i32* %arrayidx, align 4
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%add1 = add nsw i32 %tmp, 42
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store i32 %add1, i32* %arrayidx, align 4
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br label %for.cond2
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for.cond2: ; preds = %for.inc, %S1
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%j.0 = phi i32 [ 0, %S1 ], [ %inc, %for.inc ]
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%exitcond = icmp ne i32 %j.0, 100
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br i1 %exitcond, label %for.body4, label %for.end
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for.body4: ; preds = %for.cond2
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br label %S2
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S2: ; preds = %for.body4
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%mul = mul nsw i32 %i.0, %j.0
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%arrayidx5 = getelementptr inbounds i32, i32* %sum, i32 %i.0
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%tmp2 = load i32, i32* %arrayidx5, align 4
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%add6 = add nsw i32 %tmp2, %mul
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store i32 %add6, i32* %arrayidx5, align 4
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br label %for.inc
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for.inc: ; preds = %S2
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%inc = add nsw i32 %j.0, 1
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br label %for.cond2
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for.end: ; preds = %for.cond2
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br label %S3
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S3: ; preds = %for.end
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%add7 = add nsw i32 %i.0, 1
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%arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %add7
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%tmp3 = load i32, i32* %arrayidx8, align 4
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%add9 = add nsw i32 %tmp3, 7
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store i32 %add9, i32* %arrayidx8, align 4
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br label %for.inc10
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for.inc10: ; preds = %S3
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%inc11 = add nsw i32 %i.0, 1
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br label %for.cond
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for.end12: ; preds = %for.cond
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ret void
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}
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