blob: 055a3235996ad0296760ed82bfe8c01d7913c903 (
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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=ipsccp | FileCheck %s
; PR5596
; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate
; the result.
define i32 @main() noreturn nounwind {
; CHECK-LABEL: @main(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i32 123
;
entry:
%call2 = tail call i32 @wwrite(i64 0) nounwind
ret i32 %call2
}
define internal i32 @wwrite(i64 %i) nounwind readnone willreturn {
; CHECK-LABEL: @wwrite(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[SW_DEFAULT:%.*]]
; CHECK: sw.default:
; CHECK-NEXT: ret i32 poison
;
entry:
switch i64 %i, label %sw.default [
i64 3, label %return
i64 10, label %return
]
sw.default:
ret i32 123
return:
ret i32 0
}
; CHECK: attributes #0 = { noreturn nounwind }
; CHECK: attributes #1 = { nounwind willreturn memory(none) }
|
