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
|
; RUN: opt < %s -simplifycfg -S | FileCheck %s
declare void @bar(i32*)
declare void @baz(i32*)
; CHECK-LABEL: @test_load_combine_metadata(
; Check that dereferenceable metadata is combined
; CHECK: load i32*, i32** %p
; CHECK-SAME: !dereferenceable ![[DEREF:[0-9]+]]
; CHECK: t:
; CHECK: f:
define void @test_load_combine_metadata(i1 %c, i32** %p) {
br i1 %c, label %t, label %f
t:
%v1 = load i32*, i32** %p, !dereferenceable !0
call void @bar(i32* %v1)
br label %cont
f:
%v2 = load i32*, i32** %p, !dereferenceable !1
call void @baz(i32* %v2)
br label %cont
cont:
ret void
}
; CHECK: ![[DEREF]] = !{i64 8}
!0 = !{i64 8}
!1 = !{i64 16}
|
