blob: 9b9ae6f5352c5d91cea96a0a601b9f2c5b835747 (
plain)
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
|
; RUN: opt -instcombine -S < %s | FileCheck %s
declare i32 @k() convergent
declare i32 @f()
declare i64 @llvm.read_register.i64(metadata) nounwind
define i32 @extern() {
; Convergent attr shouldn't be removed here; k is convergent.
; CHECK: call i32 @k() [[CONVERGENT_ATTR:#[0-9]+]]
%a = call i32 @k() convergent
ret i32 %a
}
define i32 @extern_no_attr() {
; Convergent attr shouldn't be added here, even though k is convergent.
; CHECK: call i32 @k(){{$}}
%a = call i32 @k()
ret i32 %a
}
define i32 @no_extern() {
; Convergent should be removed here, as the target is convergent.
; CHECK: call i32 @f(){{$}}
%a = call i32 @f() convergent
ret i32 %a
}
define i32 @indirect_call(i32 ()* %f) {
; CHECK: call i32 %f() [[CONVERGENT_ATTR]]
%a = call i32 %f() convergent
ret i32 %a
}
; do not remove from convergent intrinsic call sites
; CHECK-LABEL: @convergent_intrinsic_call(
; CHECK: call i64 @llvm.read_register.i64(metadata !0) [[CONVERGENT_ATTR]]
define i64 @convergent_intrinsic_call() {
%val = call i64 @llvm.read_register.i64(metadata !0) convergent
ret i64 %val
}
; CHECK: [[CONVERGENT_ATTR]] = { convergent }
!0 = !{!"foo"}
|
