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
|
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s
; The comparison uses the pre-inc value, which could lead LSR to
; try to compute -INT64_MIN.
; CHECK-NOT: movabsq $-9223372036854775808, %rax
; CHECK: negq %r
; CHECK-NEXT: seto %al
declare i64 @bar()
define i1 @foo() nounwind {
entry:
br label %for.cond.i
for.cond.i:
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.cond.i ]
%t = call i64 @bar()
%indvar.next = add i64 %indvar, 1
%s = icmp ne i64 %indvar.next, %t
br i1 %s, label %for.cond.i, label %__ABContainsLabel.exit
__ABContainsLabel.exit:
%cmp = icmp eq i64 %indvar, 9223372036854775807
ret i1 %cmp
}
define void @func_37() noreturn nounwind readonly {
entry:
br label %for.body
for.body: ; preds = %for.inc8, %entry
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.inc8 ]
%sub.i = add i64 undef, %indvar
%cmp.i = icmp eq i64 %sub.i, -9223372036854775808
br i1 undef, label %for.inc8, label %for.cond4
for.cond4: ; preds = %for.cond4, %for.body
br label %for.cond4
for.inc8: ; preds = %for.body
%indvar.next = add i64 %indvar, 1
br label %for.body
}
|
