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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, double* StartPtr) {4; for (int j = 0; j < 2; j += 1) { /* outer */5; int phi = *StartPtr;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, ptr noalias nonnull %StartPtr) {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 %Start = load double, ptr %StartPtr27 br label %reduction.for28 29 reduction.for:30 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc]31 %phi = phi double [%Start, %reduction.preheader], [%add, %reduction.inc]32 br label %body33 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 %i.cmp = icmp slt i32 %i.inc, 445 br i1 %i.cmp, label %reduction.for, label %reduction.exit46 47 reduction.exit:48 %A_idx = getelementptr inbounds double, ptr %A, i32 %j49 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; CHECK: After accesses {66; CHECK-NEXT: Stmt_reduction_preheader67; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]68; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_StartPtr[0] };69; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]70; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };71; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };72; CHECK-NEXT: Stmt_reduction_for73; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]74; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };75; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };76; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]77; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };78; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };79; CHECK-NEXT: Stmt_body80; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]81; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] };82; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };83; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]84; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };85; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_body[1, 3] -> MemRef_A[1] };86; CHECK-NEXT: Stmt_reduction_inc87; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]88; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] };89; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] };90; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]91; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };92; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };93; CHECK-NEXT: Stmt_reduction_exit94; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]95; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };96; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]97; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_add[] };98; CHECK-NEXT: new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };99; CHECK-NEXT: }100