1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
; RUN: opt -licm -basicaa < %s -S | FileCheck %s
; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
define void @f_0(i1 %p) nounwind ssp {
; CHECK-LABEL: @f_0(
entry:
br label %for.body
for.body:
br i1 undef, label %if.then, label %for.cond.backedge
for.cond.backedge:
br i1 undef, label %for.end104, label %for.body
if.then:
br i1 undef, label %if.then27, label %if.end.if.end.split_crit_edge.critedge
if.then27:
; CHECK: tail call void @llvm.assume
tail call void @llvm.assume(i1 %p)
br label %for.body61.us
if.end.if.end.split_crit_edge.critedge:
br label %for.body61
for.body61.us:
br i1 undef, label %for.cond.backedge, label %for.body61.us
for.body61:
br i1 undef, label %for.cond.backedge, label %for.body61
for.end104:
ret void
}
define void @f_1(i1 %cond, i32* %ptr) {
; CHECK-LABEL: @f_1(
; CHECK: %val = load i32, i32* %ptr
; CHECK-NEXT: br label %loop
entry:
br label %loop
loop:
%x = phi i32 [ 0, %entry ], [ %x.inc, %loop ]
call void @llvm.assume(i1 %cond)
%val = load i32, i32* %ptr
%x.inc = add i32 %x, %val
br label %loop
}
declare void @llvm.assume(i1)
|
