1; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=polly-import-jscop,print<polly-simplify>' -polly-import-jscop-postfix=transformed -disable-output < %s | FileCheck -match-full-lines %s 2; 3; Combine four partial stores into two. 4; The stores write to the same array, but never the same element. 5; 6; for (int j = 0; j < n; j += 1) { 7; A[0] = 21.0; 8; A[1] = 42.0; 9; A[0] = 21.0; 10; A[1] = 42.0; 11; } 12; 13define void @coalesce_disjointelements(i32 %n, ptr noalias nonnull %A) { 14entry: 15 br label %for 16 17for: 18 %j = phi i32 [0, %entry], [%j.inc, %inc] 19 %j.cmp = icmp slt i32 %j, %n 20 br i1 %j.cmp, label %body, label %exit 21 22 body: 23 %A_1 = getelementptr inbounds double, ptr %A, i32 1 24 store double 21.0, ptr %A 25 store double 42.0, ptr %A_1 26 store double 21.0, ptr %A 27 store double 42.0, ptr %A_1 28 br label %inc 29 30inc: 31 %j.inc = add nuw nsw i32 %j, 1 32 br label %for 33 34exit: 35 br label %return 36 37return: 38 ret void 39} 40 41 42; CHECK: Statistics { 43; CHECK: Overwrites removed: 0 44; CHECK: Partial writes coalesced: 2 45; CHECK: } 46 47; CHECK: After accesses { 48; CHECK-NEXT: Stmt_body 49; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 50; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[0] }; 51; CHECK-NEXT: new: [n] -> { Stmt_body[i0] -> MemRef_A[0] }; 52; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0] 53; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[1] }; 54; CHECK-NEXT: new: [n] -> { Stmt_body[i0] -> MemRef_A[1] }; 55; CHECK-NEXT: } 56