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1; RUN: opt %loadNPMPolly '-passes=polly-custom<flatten;delicm>' -polly-print-delicm -disable-output < %s | FileCheck %s2;3; void func(double *A) {4; for (int j = 0; j < 2; j += 1) { /* outer */5; double phi = 0.0;6; for (int i = 0; i < 4; i += 1) /* reduction */7; phi += 4.2;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 double [0.0, %reduction.preheader], [%add, %reduction.inc]31 %i.cmp = icmp slt i32 %i, 432 br i1 %i.cmp, label %body, label %reduction.exit33 34 35 36 body:37 %add = fadd double %phi, 4.238 br label %reduction.inc39 40 41 42 reduction.inc:43 %i.inc = add nuw nsw i32 %i, 144 br label %reduction.for45 46 reduction.exit:47 %A_idx = getelementptr inbounds double, ptr %A, i32 %j48 store double %phi, 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; Unrolled flattened schedule:66; [0] Stmt_reduction_preheader[0]67; [1] Stmt_reduction_for[0, 0]68; [2] Stmt_body[0, 0]69; [3] Stmt_reduction_inc[0, 0]70; [4] Stmt_reduction_for[0, 1]71; [5] Stmt_body[0, 1]72; [6] Stmt_reduction_inc[0, 1]73; [7] Stmt_reduction_for[0, 2]74; [8] Stmt_body[0, 2]75; [9] Stmt_reduction_inc[0, 2]76; [10] Stmt_reduction_for[0, 3]77; [11] Stmt_body[0, 3]78; [12] Stmt_reduction_inc[0, 3]79; [13] Stmt_reduction_for[0, 4]80; [14] Stmt_reduction_exit[0]81; [15] Stmt_reduction_preheader[0]82; [16] Stmt_reduction_for[1, 0]83; [17] Stmt_body[1, 0]84; [18] Stmt_reduction_inc[1, 0]85; [19] Stmt_reduction_for[1, 1]86; [20] Stmt_body[1, 1]87; [21] Stmt_reduction_inc[1, 1]88; [22] Stmt_reduction_for[1, 2]89; [23] Stmt_body[1, 2]90; [24] Stmt_reduction_inc[1, 2]91; [25] Stmt_reduction_for[1, 3]92; [26] Stmt_body[1, 3]93; [27] Stmt_reduction_inc[1, 3]94; [28] Stmt_reduction_for[1, 4]95; [29] Stmt_reduction_exit[1]96 97; CHECK: After accesses {98; CHECK-NEXT: Stmt_reduction_preheader99; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]100; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };101; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };102; CHECK-NEXT: Stmt_reduction_for103; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]104; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };105; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };106; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]107; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };108; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };109; CHECK-NEXT: Stmt_body110; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]111; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] };112; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };113; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]114; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };115; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };116; CHECK-NEXT: Stmt_reduction_inc117; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]118; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] };119; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : i1 <= 7 - 5i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] };120; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]121; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };122; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };123; CHECK-NEXT: Stmt_reduction_exit124; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]125; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };126; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]127; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_phi[] };128; CHECK-NEXT: new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };129; CHECK-NEXT: }130 131