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
|
; RUN: opt < %s -simplifycfg -S | \
; RUN: not grep {icmp eq}
; Check that simplifycfg deletes a dead 'seteq' instruction when it
; folds a conditional branch into a switch instruction.
declare void @foo()
declare void @bar()
define void @testcfg(i32 %V) {
%C = icmp eq i32 %V, 18 ; <i1> [#uses=1]
%D = icmp eq i32 %V, 180 ; <i1> [#uses=1]
%E = or i1 %C, %D ; <i1> [#uses=1]
br i1 %E, label %L1, label %Sw
Sw: ; preds = %0
switch i32 %V, label %L1 [
i32 15, label %L2
i32 16, label %L2
]
L1: ; preds = %Sw, %0
call void @foo( )
ret void
L2: ; preds = %Sw, %Sw
call void @bar( )
ret void
}
|
