xref: /llvm-project/polly/test/ForwardOpTree/forward_into_region.ll (revision e1f056f692d869708c1898d9d65a69ac5584a0ed)
1; RUN: opt %loadNPMPolly '-passes=print<polly-optree>' -disable-output < %s | FileCheck %s -match-full-lines
2;
3; Move instructions to region statements.
4;
5; for (int j = 0; j < n; j += 1) {
6; bodyA:
7;   double val = 21.0 + 21.0;
8;
9; bodyB:
10;   if (cond)
11; body_true:
12;     A[0] = val;
13; }
14;
15define void @func(i32 %n, ptr noalias nonnull %A) {
16entry:
17  br label %for
18
19for:
20  %j = phi i32 [0, %entry], [%j.inc, %inc]
21  %j.cmp = icmp slt i32 %j, %n
22  br i1 %j.cmp, label %bodyA, label %exit
23
24    bodyA:
25      %val = fadd double 21.0, 21.0
26      br label %bodyB
27
28    bodyB:
29      %cond = fcmp oeq double 21.0, 21.0
30      br i1 %cond, label %bodyB_true, label %bodyB_exit
31
32    bodyB_true:
33      store double %val, ptr %A
34      br label %bodyB_exit
35
36    bodyB_exit:
37      br label %inc
38
39inc:
40  %j.inc = add nuw nsw i32 %j, 1
41  br label %for
42
43exit:
44  br label %return
45
46return:
47  ret void
48}
49
50; CHECK: Statistics {
51; CHECK:     Instructions copied: 1
52; CHECK:     Known loads forwarded: 0
53; CHECK:     Read-only accesses copied: 0
54; CHECK:     Operand trees forwarded: 1
55; CHECK:     Statements with forwarded operand trees: 1
56; CHECK: }
57
58; CHECK: After statements {
59; CHECK-NEXT:     Stmt_bodyA
60; CHECK-NEXT:             MustWriteAccess :=	[Reduction Type: NONE] [Scalar: 1]
61; CHECK-NEXT:                 [n] -> { Stmt_bodyA[i0] -> MemRef_val[] };
62; CHECK-NEXT:             Instructions {
63; CHECK-NEXT:                   %val = fadd double 2.100000e+01, 2.100000e+01
64; CHECK-NEXT:             }
65; CHECK-NEXT:     Stmt_bodyB__TO__bodyB_exit
66; CHECK-NEXT:             MayWriteAccess :=	[Reduction Type: NONE] [Scalar: 0]
67; CHECK-NEXT:                 [n] -> { Stmt_bodyB__TO__bodyB_exit[i0] -> MemRef_A[0] };
68; CHECK-NEXT:             Instructions {
69; CHECK-NEXT:                   %val = fadd double 2.100000e+01, 2.100000e+01
70; CHECK-NEXT:                   %cond = fcmp oeq double 2.100000e+01, 2.100000e+01
71; CHECK-NEXT:             }
72; CHECK-NEXT: }
73