source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/ScalarEvolution/latch-dominating-conditions.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 1.4 KB
Line 
1; RUN: opt -S -indvars < %s | FileCheck %s
2
3declare void @side_effect(i1)
4
5define void @latch_dominating_0(i8 %start) {
6; CHECK-LABEL: latch_dominating_0
7 entry:
8  %e = icmp slt i8 %start, 42
9  br i1 %e, label %loop, label %exit
10
11 loop:
12; CHECK-LABEL: loop
13  %idx = phi i8 [ %start, %entry ], [ %idx.inc, %be ]
14  %idx.inc = add i8 %idx, 1
15  %folds.to.true = icmp slt i8 %idx, 42
16; CHECK: call void @side_effect(i1 true)
17  call void @side_effect(i1 %folds.to.true)
18  %c0 = icmp slt i8 %idx.inc, 42
19  br i1 %c0, label %be, label %exit
20
21 be:
22; CHECK: call void @side_effect(i1 true)
23  call void @side_effect(i1 %folds.to.true)
24  %c1 = icmp slt i8 %idx.inc, 100
25  br i1 %c1, label %loop, label %exit
26
27 exit:
28  ret void
29}
30
31define void @latch_dominating_1(i8 %start) {
32; CHECK-LABEL: latch_dominating_1
33 entry:
34  %e = icmp slt i8 %start, 42
35  br i1 %e, label %loop, label %exit
36
37 loop:
38; CHECK-LABEL: loop
39  %idx = phi i8 [ %start, %entry ], [ %idx.inc, %be ]
40  %idx.inc = add i8 %idx, 1
41  %does.not.fold.to.true = icmp slt i8 %idx, 42
42; CHECK: call void @side_effect(i1 %does.not.fold.to.true)
43  call void @side_effect(i1 %does.not.fold.to.true)
44  %c0 = icmp slt i8 %idx.inc, 42
45  br i1 %c0, label %be, label %be
46
47 be:
48; CHECK: call void @side_effect(i1 %does.not.fold.to.true)
49  call void @side_effect(i1 %does.not.fold.to.true)
50  %c1 = icmp slt i8 %idx.inc, 100
51  br i1 %c1, label %loop, label %exit
52
53 exit:
54  ret void
55}
Note: See TracBrowser for help on using the repository browser.