xref: /aosp_15_r20/external/llvm/test/Transforms/GVN/2008-07-02-Unreachable.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -gvn -S | grep "ret i8 [%]tmp3"
2*9880d681SAndroid Build Coastguard Worker; PR2503
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker@g_3 = external global i8		; <i8*> [#uses=2]
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine i8 @func_1(i32 %x, i32 %y) nounwind  {
7*9880d681SAndroid Build Coastguard Workerentry:
8*9880d681SAndroid Build Coastguard Worker  %A = alloca i8
9*9880d681SAndroid Build Coastguard Worker    %cmp = icmp eq i32 %x, %y
10*9880d681SAndroid Build Coastguard Worker	br i1 %cmp, label %ifelse, label %ifthen
11*9880d681SAndroid Build Coastguard Worker
12*9880d681SAndroid Build Coastguard Workerifthen:		; preds = %entry
13*9880d681SAndroid Build Coastguard Worker	br label %ifend
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Workerifelse:		; preds = %entry
16*9880d681SAndroid Build Coastguard Worker	%tmp3 = load i8, i8* @g_3		; <i8> [#uses=0]
17*9880d681SAndroid Build Coastguard Worker        store i8 %tmp3, i8* %A
18*9880d681SAndroid Build Coastguard Worker	br label %afterfor
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard Workerforcond:		; preds = %forinc
21*9880d681SAndroid Build Coastguard Worker	br i1 false, label %afterfor, label %forbody
22*9880d681SAndroid Build Coastguard Worker
23*9880d681SAndroid Build Coastguard Workerforbody:		; preds = %forcond
24*9880d681SAndroid Build Coastguard Worker	br label %forinc
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Workerforinc:		; preds = %forbody
27*9880d681SAndroid Build Coastguard Worker	br label %forcond
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard Workerafterfor:		; preds = %forcond, %forcond.thread
30*9880d681SAndroid Build Coastguard Worker	%tmp10 = load i8, i8* @g_3		; <i8> [#uses=0]
31*9880d681SAndroid Build Coastguard Worker	ret i8 %tmp10
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Workerifend:		; preds = %afterfor, %ifthen
34*9880d681SAndroid Build Coastguard Worker	ret i8 0
35*9880d681SAndroid Build Coastguard Worker}
36