llvm-project/polly/test/DependenceInfo/reduction_complex_location.ll

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; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s
;
; CHECK: RAW dependences:
; CHECK: { }
; CHECK: WAR dependences:
; CHECK: { }
; CHECK: WAW dependences:
; CHECK: { }
; CHECK: Reduction dependences:
; CHECK: { Stmt_for_body3[i0, i1] -> Stmt_for_body3[2 + i0, -1 + i1] : i0 <= 97 and i0 >= 0 and i1 <= 99 and i1 >= 1 }
;
; void f(int *sum) {
; for (int i = 0; i < 100; i++)
; for (int j = 0; j < 100; j++)
; sum[i+j*2] += j * i;
; }
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.inc6, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc7, %for.inc6 ]
%exitcond1 = icmp ne i32 %i.0, 100
br i1 %exitcond1, label %for.body, label %for.end8
for.body: ; preds = %for.cond
br label %for.cond1
for.cond1: ; preds = %for.inc, %for.body
%j.0 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
%exitcond = icmp ne i32 %j.0, 100
br i1 %exitcond, label %for.body3, label %for.end
for.body3: ; preds = %for.cond1
%mul = mul nsw i32 %j.0, %i.0
%mul4 = shl nsw i32 %j.0, 1
%add = add nsw i32 %i.0, %mul4
%arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add
%tmp = load i32, i32* %arrayidx, align 4
%add5 = add nsw i32 %tmp, %mul
store i32 %add5, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body3
%inc = add nsw i32 %j.0, 1
br label %for.cond1
for.end: ; preds = %for.cond1
br label %for.inc6
for.inc6: ; preds = %for.end
%inc7 = add nsw i32 %i.0, 1
br label %for.cond
for.end8: ; preds = %for.cond
ret void
}