2006-12-02 04:23:10 +00:00
|
|
|
; RUN: llvm-upgrade < %s | llvm-as | opt -condprop | llvm-dis | not grep phi
|
2005-08-05 00:59:55 +00:00
|
|
|
|
|
|
|
|
declare bool %foo()
|
|
|
|
|
|
|
|
|
|
int %test(uint %C) {
|
|
|
|
|
%Val = call bool %foo()
|
|
|
|
|
switch uint %C, label %T1 [
|
|
|
|
|
uint 4, label %T2
|
|
|
|
|
uint 17, label %T3
|
|
|
|
|
]
|
|
|
|
|
T1:
|
|
|
|
|
call void %a()
|
|
|
|
|
br label %Cont
|
|
|
|
|
T2:
|
|
|
|
|
call void %b()
|
|
|
|
|
br label %Cont
|
|
|
|
|
T3:
|
|
|
|
|
call void %c()
|
|
|
|
|
br label %Cont
|
|
|
|
|
|
|
|
|
|
Cont:
|
|
|
|
|
;; PHI becomes dead after threading T2
|
|
|
|
|
%C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3]
|
|
|
|
|
br bool %C2, label %L2, label %F2
|
|
|
|
|
L2:
|
|
|
|
|
call void %d()
|
|
|
|
|
ret int 17
|
|
|
|
|
F2:
|
|
|
|
|
call void %e()
|
|
|
|
|
ret int 1
|
|
|
|
|
}
|
|
|
|
|
declare void %a()
|
|
|
|
|
declare void %b()
|
|
|
|
|
declare void %c()
|
|
|
|
|
declare void %d()
|
|
|
|
|
declare void %e()
|
