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| ; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
;
; CHECK: RAW dependences:
; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
; CHECK-NEXT: WAR dependences:
; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
; CHECK-NEXT: WAW dependences:
; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 }
; CHECK-NEXT: Reduction dependences:
; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S2[1 + i0, i1] : 0 <= i0 <= 97 and i1 >= 0 and 2 - i0 <= i1 <= 98 - i0; Stmt_S2[0, 0] -> Stmt_S2[1, 0] }
;
; void f(int *sum) {
; int i, j;
; for (i = 0; i < 99; i++) {
; S1: sum[i + 1] += 42;
; for (j = i; j < 100; j++)
; S2: sum[i - j] += i * j;
; S3: sum[i - 1] += 7;
; }
; }
;
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
define void @f(i32* %sum) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc10, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ]
%exitcond1 = icmp ne i32 %i.0, 99
br i1 %exitcond1, label %for.body, label %for.end12
for.body: ; preds = %for.cond
br label %S1
S1: ; preds = %for.body
%add = add nsw i32 %i.0, 1
%arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add
%tmp = load i32, i32* %arrayidx, align 4
%add1 = add nsw i32 %tmp, 42
store i32 %add1, i32* %arrayidx, align 4
br label %for.cond2
for.cond2: ; preds = %for.inc, %S1
%j.0 = phi i32 [ %i.0, %S1 ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %j.0, 100
br i1 %exitcond, label %for.body4, label %for.end
for.body4: ; preds = %for.cond2
br label %S2
S2: ; preds = %for.body4
%mul = mul nsw i32 %i.0, %j.0
%sub = sub nsw i32 %i.0, %j.0
%arrayidx5 = getelementptr inbounds i32, i32* %sum, i32 %sub
%tmp2 = load i32, i32* %arrayidx5, align 4
%add6 = add nsw i32 %tmp2, %mul
store i32 %add6, i32* %arrayidx5, align 4
br label %for.inc
for.inc: ; preds = %S2
%inc = add nsw i32 %j.0, 1
br label %for.cond2
for.end: ; preds = %for.cond2
br label %S3
S3: ; preds = %for.end
%sub7 = add nsw i32 %i.0, -1
%arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %sub7
%tmp3 = load i32, i32* %arrayidx8, align 4
%add9 = add nsw i32 %tmp3, 7
store i32 %add9, i32* %arrayidx8, align 4
br label %for.inc10
for.inc10: ; preds = %S3
%inc11 = add nsw i32 %i.0, 1
br label %for.cond
for.end12: ; preds = %for.cond
ret void
}
|