xref: /aosp_15_r20/external/llvm/test/Transforms/SimplifyCFG/EmptyBlockMerge.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; Basic block #2 should not be merged into BB #3!
2*9880d681SAndroid Build Coastguard Worker;
3*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -simplifycfg -S | FileCheck %s
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdeclare void @foo()
6*9880d681SAndroid Build Coastguard Worker
7*9880d681SAndroid Build Coastguard Workerdefine void @cprop_test12(i32* %data) {
8*9880d681SAndroid Build Coastguard Workerbb0:
9*9880d681SAndroid Build Coastguard Worker	%reg108 = load i32, i32* %data		; <i32> [#uses=2]
10*9880d681SAndroid Build Coastguard Worker	%cond218 = icmp ne i32 %reg108, 5		; <i1> [#uses=1]
11*9880d681SAndroid Build Coastguard Worker	br i1 %cond218, label %bb3, label %bb2
12*9880d681SAndroid Build Coastguard Workerbb2:		; preds = %bb0
13*9880d681SAndroid Build Coastguard Worker	call void @foo( )
14*9880d681SAndroid Build Coastguard Worker; CHECK: br label %bb3
15*9880d681SAndroid Build Coastguard Worker	br label %bb3
16*9880d681SAndroid Build Coastguard Workerbb3:		; preds = %bb2, %bb0
17*9880d681SAndroid Build Coastguard Worker	%reg117 = phi i32 [ 110, %bb2 ], [ %reg108, %bb0 ]		; <i32> [#uses=1]
18*9880d681SAndroid Build Coastguard Worker	store i32 %reg117, i32* %data
19*9880d681SAndroid Build Coastguard Worker	ret void
20*9880d681SAndroid Build Coastguard Worker}
21*9880d681SAndroid Build Coastguard Worker
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