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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; Make sure delicm works even in case two stores that store the same value.4;5; void func(double *A) {6; for (int j = 0; j < 2; j += 1) { /* outer */7; double phi = A[j];8; for (int i = 0; i < 4; i += 1) /* reduction */9; phi += 4.2;10; A[j] = phi;11; }12; }13;14define void @func(ptr noalias nonnull %A) {15entry:16 br label %outer.preheader17 18outer.preheader:19 br label %outer.for20 21outer.for:22 %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc]23 %j.cmp = icmp slt i32 %j, 224 br i1 %j.cmp, label %reduction.preheader, label %outer.exit25 26 27 reduction.preheader:28 %A_idx = getelementptr inbounds double, ptr %A, i32 %j29 %init = load double, ptr %A_idx30 br label %reduction.for31 32 reduction.for:33 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc]34 %phi = phi double [%init, %reduction.preheader], [%add, %reduction.inc]35 br label %body36 37 38 39 body:40 %add = fadd double %phi, 4.241 br label %reduction.inc42 43 44 45 reduction.inc:46 %i.inc = add nuw nsw i32 %i, 147 %i.cmp = icmp slt i32 %i.inc, 448 br i1 %i.cmp, label %reduction.for, label %reduction.exit49 50 reduction.exit:51 store double %add, ptr %A_idx52 store double %add, ptr %A_idx53 br label %outer.inc54 55 56 57outer.inc:58 %j.inc = add nuw nsw i32 %j, 159 br label %outer.for60 61outer.exit:62 br label %return63 64return:65 ret void66}67 68 69; CHECK: After accesses {70; CHECK-NEXT: Stmt_reduction_preheader71; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]72; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };73; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]74; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };75; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };76; CHECK-NEXT: Stmt_reduction_for77; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]78; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };79; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };80; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]81; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };82; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };83; CHECK-NEXT: Stmt_body84; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]85; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] };86; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };87; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]88; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };89; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_body[1, 3] -> MemRef_A[1] };90; CHECK-NEXT: Stmt_reduction_inc91; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]92; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] };93; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 22 - 14i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] };94; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]95; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };96; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };97; CHECK-NEXT: Stmt_reduction_exit98; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]99; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };100; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]101; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_add[] };102; CHECK-NEXT: new: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };103; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]104; CHECK-NEXT: { Stmt_reduction_exit[i0] -> MemRef_A[i0] };105; CHECK-NEXT: }106