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| ; RUN: opt -S %loadPolly -polly-dependences -analyze < %s | FileCheck %s -check-prefix=VALUE
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; for (int i = 0; i < N; i++) {
; A.must.write.20: A[i] = 20;
;
; compute.i.square: if (i * i)
; A.may.write.90: A[i] = 90;
;
; B.write.from.A: B[i] = A[i];
; A.must.write.42: A[i] = 42;
; }
define void @f(i32* %A, i32* %B) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%exitcond = icmp ne i64 %indvars.iv, 3000
br i1 %exitcond, label %A.must.write.20, label %for.end
A.must.write.20:
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 20, i32* %arrayidx, align 4
br label %compute.i.square
compute.i.square:
%tmp = mul nsw i64 %indvars.iv, %indvars.iv
%tmp2 = trunc i64 %tmp to i32
%tobool = icmp eq i32 %tmp2, 0
br i1 %tobool, label %B.write.from.A, label %A.may.write.90
A.may.write.90:
%arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 90, i32* %arrayidx2, align 4
br label %B.write.from.A
B.write.from.A:
%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
%tmp3 = load i32, i32* %arrayidx4, align 4
%arrayidx6 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
store i32 %tmp3, i32* %arrayidx6, align 4
br label %A.must.write.42
; br label %for.inc
A.must.write.42:
%arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
store i32 42, i32* %arrayidx5, align 4
br label %for.inc
for.inc: ; preds = %if.end
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
; VALUE: RAW dependences:
; VALUE-NEXT: { Stmt_A_must_write_20[i0] -> Stmt_B_write_from_A[i0] : 0 <= i0 <= 2999; Stmt_compute_i_square__TO__B_write_from_A[i0] -> Stmt_B_write_from_A[i0] : 0 <= i0 <= 2999 }
; VALUE-NEXT: WAR dependences:
; VALUE-NEXT: { Stmt_B_write_from_A[i0] -> Stmt_A_must_write_42[i0] : 0 <= i0 <= 2999 }
; VALUE-NEXT: WAW dependences:
; VALUE-NEXT: { Stmt_compute_i_square__TO__B_write_from_A[i0] -> Stmt_A_must_write_42[i0] : 0 <= i0 <= 2999; Stmt_A_must_write_20[i0] -> Stmt_A_must_write_42[i0] : 0 <= i0 <= 2999; Stmt_A_must_write_20[i0] -> Stmt_compute_i_square__TO__B_write_from_A[i0] : 0 <= i0 <= 2999 }
; VALUE-NEXT: Reduction dependences:
; VALUE-NEXT: { }
; VALUE-NEXT: Transitive closure of reduction dependences:
; VALUE-NEXT: { }
|