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1; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=polly-custom<flatten;delicm>' -polly-delicm-overapproximate-writes=true -polly-delicm-compute-known=true -polly-print-delicm -disable-output < %s | FileCheck %s2;3; void func(int *A) {4; for (int j = 0; j < 2; j += 1) { /* outer */5; int phi = j;6; for (int i = 0; i < 4; i += 1) /* reduction */7; phi += 42;8; A[j] = phi;9; }10; }11;12define void @func(ptr noalias nonnull %A) {13entry:14 br label %outer.preheader15 16outer.preheader:17 br label %outer.for18 19outer.for:20 %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc]21 %j.cmp = icmp slt i32 %j, 222 br i1 %j.cmp, label %reduction.preheader, label %outer.exit23 24 25 reduction.preheader:26 br label %reduction.for27 28 reduction.for:29 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc]30 %phi = phi i32 [%j, %reduction.preheader], [%mul, %reduction.inc]31 br label %body32 33 34 35 body:36 %mul = mul i32 %phi, 4237 br label %reduction.inc38 39 40 41 reduction.inc:42 %i.inc = add nuw nsw i32 %i, 143 %i.cmp = icmp slt i32 %i.inc, 444 br i1 %i.cmp, label %reduction.for, label %reduction.exit45 46 reduction.exit:47 %A_idx = getelementptr inbounds i32, ptr %A, i32 %j48 store i32 %mul, ptr %A_idx49 br label %outer.inc50 51 52 53outer.inc:54 %j.inc = add nuw nsw i32 %j, 155 br label %outer.for56 57outer.exit:58 br label %return59 60return:61 ret void62}63 64 65; CHECK: After accesses {66; CHECK-NEXT: Stmt_reduction_preheader67; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]68; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };69; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };70; CHECK-NEXT: Stmt_reduction_for71; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]72; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };73; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };74; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]75; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };76; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };77; CHECK-NEXT: Stmt_body78; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]79; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_mul[] };80; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };81; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]82; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };83; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_body[1, 3] -> MemRef_A[1] };84; CHECK-NEXT: Stmt_reduction_inc85; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]86; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_mul[] };87; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] };88; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]89; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };90; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };91; CHECK-NEXT: Stmt_reduction_exit92; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]93; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };94; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]95; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_mul[] };96; CHECK-NEXT: new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };97; CHECK-NEXT: }98