blob: 943086ab466cb8790b11ddb54b67f086e0f96924 [file] [log] [blame]
; RUN: opt < %s -S -ipsccp | FileCheck %s
; PR5596
; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate
; the result.
; CHECK: define i32 @main() #0 {
; CHECK-NEXT: entry:
; CHECK-NOT: call
; CHECK-NEXT: ret i32 123
define i32 @main() noreturn nounwind {
entry:
%call2 = tail call i32 @wwrite(i64 0) nounwind
ret i32 %call2
}
define internal i32 @wwrite(i64 %i) nounwind readnone {
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 readnone }