1; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=print<polly-function-scops>,scop(print<polly-simplify>)' -disable-output < %s 2>&1 | FileCheck %s 2; 3; %tmp5 must keep the Value WRITE MemoryAccess, because as an incoming value of 4; %tmp4, it is an "external use". 5; 6; A common mistake is to assume that %tmp5 is used by %tmp4 in bb3, when 7; practically it's the incoming block %bb9 which is the user. 8; 9target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 10 11define void @hoge() { 12bb: 13 br label %bb2 14 15bb2: ; preds = %bb 16 %tmp = load ptr, ptr undef 17 br label %bb3 18 19bb3: ; preds = %bb9, %bb2 20 %tmp4 = phi ptr [ %tmp, %bb2 ], [ %tmp5, %bb9 ] 21 %tmp5 = getelementptr inbounds i64, ptr %tmp4, i64 1 22 %tmp6 = load i64, ptr %tmp5 23 %tmp7 = and i64 %tmp6, 4160749568 24 br i1 false, label %bb8, label %bb9 25 26bb8: ; preds = %bb3 27 br label %bb9 28 29bb9: ; preds = %bb8, %bb3 30 %tmp10 = icmp eq i64 %tmp7, 134217728 31 br i1 %tmp10, label %bb11, label %bb3 32 33bb11: ; preds = %bb9 34 br label %bb12 35 36bb12: ; preds = %bb11 37 ret void 38} 39 40 41; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1] 42; CHECK-NEXT: [p_0] -> { Stmt_bb3[] -> MemRef_tmp5[] }; 43 44; CHECK: SCoP could not be simplified 45