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1; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=polly-custom<delicm>' -polly-print-delicm -disable-output < %s | FileCheck %s -match-full-lines2;3; Load (but not store) of A[j] hoisted, reduction only over some iterations.4;5; void func(double *A) {6; for (int j = 0; j < 2; j += 1) { /* outer */7; double phi = 0.0;8; for (int i = 0; i < 4; i += 1) { /* reduction */9; if (i != 2)10; phi += 4.2;11; A[j] = phi;12; }13; }14; }15;16define void @func(ptr noalias nonnull %A) {17entry:18 br label %outer.preheader19 20outer.preheader:21 br label %outer.for22 23outer.for:24 %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc]25 %j.cmp = icmp slt i32 %j, 226 br i1 %j.cmp, label %reduction.preheader, label %outer.exit27 28 29 reduction.preheader:30 br label %reduction.for31 32 reduction.for:33 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc]34 %phi = phi double [0.0, %reduction.preheader], [%join, %reduction.inc]35 br label %body36 37 38 39 body:40 %cond = icmp ne i32 %i, 241 br i1 %cond, label %body_true, label %body_join42 43 body_true:44 %add = fadd double %phi, 4.245 br label %body_join46 47 body_join:48 %join = phi double [%phi, %body], [%add, %body_true]49 %A_idx = getelementptr inbounds double, ptr %A, i32 %j50 store double %join, ptr %A_idx51 br label %reduction.inc52 53 54 55 reduction.inc:56 %i.inc = add nuw nsw i32 %i, 157 %i.cmp = icmp slt i32 %i.inc, 458 br i1 %i.cmp, label %reduction.for, label %reduction.exit59 60 reduction.exit:61 br label %outer.inc62 63 64 65outer.inc:66 %j.inc = add nuw nsw i32 %j, 167 br label %outer.for68 69outer.exit:70 br label %return71 72return:73 ret void74}75 76 77; CHECK: Statistics {78; CHECK: Compatible overwrites: 179; CHECK: Overwrites mapped to: 180; CHECK: Value scalars mapped: 281; CHECK: PHI scalars mapped: 282; CHECK: }83 84; CHECK: After accesses {85; CHECK-NEXT: Stmt_reduction_preheader86; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]87; CHECK-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };88; CHECK-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };89; CHECK-NEXT: Stmt_reduction_for90; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]91; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };92; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };93; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]94; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };95; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] };96; CHECK-NEXT: Stmt_body97; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]98; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] };99; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] };100; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]101; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_join__phi[] };102; CHECK-NEXT: new: { Stmt_body[i0, 2] -> MemRef_A[i0] };103; CHECK-NEXT: Stmt_body_true104; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]105; CHECK-NEXT: { Stmt_body_true[i0, i1] -> MemRef_phi[] };106; CHECK-NEXT: new: { Stmt_body_true[i0, i1] -> MemRef_A[i0] : i1 <= 1; Stmt_body_true[i0, 3] -> MemRef_A[i0] };107; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]108; CHECK-NEXT: { Stmt_body_true[i0, i1] -> MemRef_join__phi[] };109; CHECK-NEXT: new: { Stmt_body_true[i0, i1] -> MemRef_A[i0] : i1 <= 1; Stmt_body_true[i0, 3] -> MemRef_A[i0] };110; CHECK-NEXT: Stmt_body_join111; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]112; CHECK-NEXT: { Stmt_body_join[i0, i1] -> MemRef_join[] };113; CHECK-NEXT: new: { Stmt_body_join[i0, i1] -> MemRef_A[i0] };114; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]115; CHECK-NEXT: { Stmt_body_join[i0, i1] -> MemRef_join__phi[] };116; CHECK-NEXT: new: { Stmt_body_join[i0, i1] -> MemRef_A[i0] };117; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]118; CHECK-NEXT: { Stmt_body_join[i0, i1] -> MemRef_A[i0] };119; CHECK-NEXT: Stmt_reduction_inc120; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]121; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_join[] };122; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] };123; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]124; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };125; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : i1 <= 2 };126; CHECK-NEXT: }127