xref: /llvm-project/polly/test/DeLICM/confused_order.ll (revision e1f056f692d869708c1898d9d65a69ac5584a0ed)
1; RUN: opt %loadNPMPolly '-passes=polly-import-jscop,print<polly-delicm>' -polly-import-jscop-postfix=transformed -disable-output < %s | FileCheck %s
2; RUN: opt %loadNPMPolly '-passes=polly-import-jscop,polly-delicm' -polly-import-jscop-postfix=transformed -disable-output -pass-remarks-missed=polly-delicm < %s 2>&1 | FileCheck %s -check-prefix=REMARKS
3;
4; ForwardOptree changes the SCoP and may already map some accesses.
5; DeLICM must be prepared to encounter implicit reads
6; (isOriginalScalarKind()) that occur at the beginning of the SCoP
7; to an array (isLatestArrayKind()). Otherwise it may confuse the
8; MemoryAccess execution order.
9
10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
11
12define void @confused_order(ptr nocapture %C, i32 %rows, i32 %cols) {
13entry:
14  %0 = sext i32 %cols to i64
15  %1 = sext i32 %rows to i64
16  %cmp108 = icmp slt i64 0, %0
17  br i1 undef, label %for.body7.lr.ph, label %for.end103
18
19for.body7.lr.ph:
20  br label %for.end103
21
22for.end103:
23  %a_dot_b_domain.0.lcssa = phi double [ 0.000000e+00, %entry ], [ undef, %for.body7.lr.ph ]
24  store double %a_dot_b_domain.0.lcssa, ptr %C
25  %cmp109 = icmp slt i64 0, %1
26  %or.cond = and i1 %cmp108, %cmp109
27  br i1 %or.cond, label %if.then110, label %for.inc116
28
29if.then110:
30  store double %a_dot_b_domain.0.lcssa, ptr %C
31  br label %for.inc116
32
33for.inc116:
34  ret void
35}
36
37
38; REMARKS-NOT: load after store of same element in same statement
39; CHECK: No modification has been made
40