1; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-delicm -analyze < %s | FileCheck %s -match-full-lines 2; 3; Hosted reduction load (but not the store) without preheader. 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; phi += 4.2; 10; A[j] = phi; 11; } 12; } 13; } 14; 15define void @func(double* noalias nonnull %A) { 16entry: 17 br label %outer.preheader 18 19outer.preheader: 20 br label %outer.for 21 22outer.for: 23 %j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc] 24 %j.cmp = icmp slt i32 %j, 2 25 br i1 %j.cmp, label %reduction.for, label %outer.exit 26 27 28 reduction.for: 29 %i = phi i32 [0, %outer.for], [%i.inc, %reduction.inc] 30 %phi = phi double [0.0, %outer.for], [%add, %reduction.inc] 31 br label %body 32 33 34 35 body: 36 %add = fadd double %phi, 4.2 37 %A_idx = getelementptr inbounds double, double* %A, i32 %j 38 store double %add, double* %A_idx 39 br label %reduction.inc 40 41 42 43 reduction.inc: 44 %i.inc = add nuw nsw i32 %i, 1 45 %i.cmp = icmp slt i32 %i.inc, 4 46 br i1 %i.cmp, label %reduction.for, label %reduction.exit 47 48 reduction.exit: 49 br label %outer.inc 50 51 52 53outer.inc: 54 %j.inc = add nuw nsw i32 %j, 1 55 br label %outer.for 56 57outer.exit: 58 br label %return 59 60return: 61 ret void 62} 63 64 65; CHECK: Statistics { 66; CHECK: Compatible overwrites: 1 67; CHECK: Overwrites mapped to: 1 68; CHECK: Value scalars mapped: 2 69; CHECK: PHI scalars mapped: 1 70; CHECK: } 71 72; CHECK-NEXT: After accesses { 73; CHECK-NEXT: Stmt_outer_for 74; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 75; CHECK-NEXT: { Stmt_outer_for[i0] -> MemRef_phi__phi[] }; 76; CHECK-NEXT: new: { Stmt_outer_for[i0] -> MemRef_A[i0] : i0 <= 1 }; 77; CHECK-NEXT: Stmt_reduction_for 78; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 79; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] }; 80; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] }; 81; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 82; CHECK-NEXT: { Stmt_reduction_for[i0, i1] -> MemRef_phi[] }; 83; CHECK-NEXT: new: { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] }; 84; CHECK-NEXT: Stmt_body 85; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 86; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_add[] }; 87; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 88; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 89; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_phi[] }; 90; CHECK-NEXT: new: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 91; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 92; CHECK-NEXT: { Stmt_body[i0, i1] -> MemRef_A[i0] }; 93; CHECK-NEXT: Stmt_reduction_inc 94; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1] 95; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_add[] }; 96; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] }; 97; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 98; CHECK-NEXT: { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] }; 99; CHECK-NEXT: new: { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : i1 <= 2 }; 100; CHECK-NEXT: } 101