1; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-flatten-schedule -polly-delicm-overapproximate-writes=true -polly-delicm-compute-known=true -polly-delicm -analyze < %s | FileCheck %s 2; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-flatten-schedule -polly-delicm-partial-writes=true -polly-delicm-compute-known=true -polly-delicm -analyze < %s | FileCheck -check-prefix=PARTIAL %s 3; 4; void func(double *A) { 5; for (int j = 0; j < 2; j += 1) { /* outer */ 6; double phi = 0.0; 7; for (int i = 0; i < 4; i += 1) { /* reduction */ 8; phi += 4.2; 9; A[j] = phi; 10; } 11; } 12; } 13; 14define void @func(double* noalias nonnull %A) { 15entry: 16 br label %outer.preheader 17 18outer.preheader: 19 br label %outer.for 20 21outer.for: 22 %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc] 23 %j.cmp = icmp slt i32 %j, 2 24 br i1 %j.cmp, label %reduction.preheader, label %outer.exit 25 26 27 reduction.preheader: 28 br label %reduction.for 29 30 reduction.for: 31 %i = phi i32 [0, %reduction.preheader], [%i.inc, %reduction.inc] 32 %phi = phi double [0.0, %reduction.preheader], [%add, %reduction.inc] 33 br label %body 34 35 36 37 body: 38 %add = fadd double %phi, 4.2 39 %A_idx = getelementptr inbounds double, double* %A, i32 %j 40 store double %add, double* %A_idx 41 br label %reduction.inc 42 43 44 45 reduction.inc: 46 %i.inc = add nuw nsw i32 %i, 1 47 %i.cmp = icmp slt i32 %i.inc, 4 48 br i1 %i.cmp, label %reduction.for, label %reduction.exit 49 50 reduction.exit: 51 br label %outer.inc 52 53 54 55outer.inc: 56 %j.inc = add nuw nsw i32 %j, 1 57 br label %outer.for 58 59outer.exit: 60 br label %return 61 62return: 63 ret void 64} 65 66 67; CHECK: After accesses { 68; CHECK-NEXT: Stmt_reduction_preheader 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_for 73; 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_body 80; 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 <= 21 - 13i0; Stmt_body[1, 3] -> MemRef_A[1] }; 86; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 87; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 88; CHECK-NEXT: Stmt_reduction_inc 89; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 90; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] }; 91; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 21 - 13i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] }; 92; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 93; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] }; 94; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] }; 95; CHECK-NEXT: } 96 97 98; PARTIAL: After accesses { 99; PARTIAL-NEXT: Stmt_reduction_preheader 100; PARTIAL-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 101; PARTIAL-NEXT: { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] }; 102; PARTIAL-NEXT: new: { Stmt_reduction_preheader[i0] -> MemRef_A[i0] }; 103; PARTIAL-NEXT: Stmt_reduction_for 104; PARTIAL-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 105; PARTIAL-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] }; 106; PARTIAL-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] }; 107; PARTIAL-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 108; PARTIAL-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] }; 109; PARTIAL-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] }; 110; PARTIAL-NEXT: Stmt_body 111; PARTIAL-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 112; PARTIAL-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] }; 113; PARTIAL-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 114; PARTIAL-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 115; PARTIAL-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] }; 116; PARTIAL-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] : 3i1 <= 21 - 13i0; Stmt_body[1, 3] -> MemRef_A[1] }; 117; PARTIAL-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 118; PARTIAL-NEXT: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 119; PARTIAL-NEXT: Stmt_reduction_inc 120; PARTIAL-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 121; PARTIAL-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] }; 122; PARTIAL-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 3i1 <= 21 - 13i0; Stmt_reduction_inc[1, 3] -> MemRef_A[1] }; 123; PARTIAL-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 124; PARTIAL-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] }; 125; PARTIAL-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : i1 <= 2 }; 126; PARTIAL-NEXT: } 127