xref: /aosp_15_r20/external/llvm/test/Transforms/InstSimplify/dead-code-removal.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -instsimplify -S < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine void @foo() nounwind {
4*9880d681SAndroid Build Coastguard Worker  br i1 undef, label %1, label %4
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Worker; <label>:1                                       ; preds = %1, %0
7*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: phi
8*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: sub
9*9880d681SAndroid Build Coastguard Worker  %2 = phi i32 [ %3, %1 ], [ undef, %0 ]
10*9880d681SAndroid Build Coastguard Worker  %3 = sub i32 0, undef
11*9880d681SAndroid Build Coastguard Worker  br label %1
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Worker; <label>:4                                       ; preds = %0
14*9880d681SAndroid Build Coastguard Worker  ret void
15*9880d681SAndroid Build Coastguard Worker}
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