1
; RUN: opt < %s -S -ipsccp | FileCheck %s
4
; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate
7
; CHECK: define i32 @main() #0 {
9
; CHECK-NEXT: %call2 = tail call i32 @wwrite(i64 0) [[NUW:#[0-9]+]]
10
; CHECK-NEXT: ret i32 123
12
define i32 @main() noreturn nounwind {
14
%call2 = tail call i32 @wwrite(i64 0) nounwind
18
define internal i32 @wwrite(i64 %i) nounwind readnone {
20
switch i64 %i, label %sw.default [
32
; CHECK: attributes #0 = { noreturn nounwind }
33
; CHECK: attributes #1 = { nounwind readnone }
34
; CHECK: attributes [[NUW]] = { nounwind }