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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(double *A) {4; for (int j = 0; j < 2; j += 1) { /* outer */5; double phi = A[j];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 %A_idx = getelementptr inbounds double, ptr %A, i32 %j27 %init = load double, ptr %A_idx28 br label %reduction.for29 30 reduction.for:31 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc]32 %phi = phi double [%init, %reduction.preheader], [%add, %reduction.inc]33 br label %body34 35 36 37 body:38 %add = fadd double %phi, 4.239 br label %reduction.inc40 41 42 43 reduction.inc:44 %i.inc = add nuw nsw i32 %i, 145 %i.cmp = icmp slt i32 %i.inc, 446 br i1 %i.cmp, label %reduction.for, label %reduction.exit47 48 reduction.exit:49 store double %add, ptr %A_idx50 br label %outer.inc51 52 53 54outer.inc:55 %j.inc = add nuw nsw i32 %j, 156 br label %outer.for57 58outer.exit:59 br label %return60 61return:62 ret void63}64 65 66; CHECK: After accesses {67; CHECK-NEXT: Stmt_reduction_preheader68; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]69; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };70; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]71; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };72; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };73; CHECK-NEXT: Stmt_reduction_for74; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]75; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };76; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };77; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]78; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };79; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };80; CHECK-NEXT: Stmt_body81; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]82; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] };83; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };84; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]85; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };86; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_body[1, 3] -> MemRef_A[1] };87; CHECK-NEXT: Stmt_reduction_inc88; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]89; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] };90; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] };91; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]92; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };93; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };94; CHECK-NEXT: Stmt_reduction_exit95; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]96; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };97; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]98; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_add[] };99; CHECK-NEXT: new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };100; CHECK-NEXT: }101