xref: /aosp_15_r20/external/llvm/test/Other/2002-02-24-InlineBrokePHINodes.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; Inlining used to break PHI nodes.  This tests that they are correctly updated
2*9880d681SAndroid Build Coastguard Worker; when a node is split around the call instruction.  The verifier caught the error.
3*9880d681SAndroid Build Coastguard Worker;
4*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -inline
5*9880d681SAndroid Build Coastguard Worker;
6*9880d681SAndroid Build Coastguard Worker
7*9880d681SAndroid Build Coastguard Workerdefine i64 @test(i64 %X) {
8*9880d681SAndroid Build Coastguard Worker	ret i64 %X
9*9880d681SAndroid Build Coastguard Worker}
10*9880d681SAndroid Build Coastguard Worker
11*9880d681SAndroid Build Coastguard Workerdefine i64 @fib(i64 %n) {
12*9880d681SAndroid Build Coastguard Worker; <label>:0
13*9880d681SAndroid Build Coastguard Worker	%T = icmp ult i64 %n, 2		; <i1> [#uses=1]
14*9880d681SAndroid Build Coastguard Worker	br i1 %T, label %BaseCase, label %RecurseCase
15*9880d681SAndroid Build Coastguard Worker
16*9880d681SAndroid Build Coastguard WorkerRecurseCase:		; preds = %0
17*9880d681SAndroid Build Coastguard Worker	%result = call i64 @test( i64 %n )		; <i64> [#uses=0]
18*9880d681SAndroid Build Coastguard Worker	br label %BaseCase
19*9880d681SAndroid Build Coastguard Worker
20*9880d681SAndroid Build Coastguard WorkerBaseCase:		; preds = %RecurseCase, %0
21*9880d681SAndroid Build Coastguard Worker	%X = phi i64 [ 1, %0 ], [ 2, %RecurseCase ]		; <i64> [#uses=1]
22*9880d681SAndroid Build Coastguard Worker	ret i64 %X
23*9880d681SAndroid Build Coastguard Worker}
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