xref: /aosp_15_r20/external/llvm/test/Transforms/JumpThreading/branch-no-const.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -jump-threading -S | not grep phi
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdeclare i8 @mcguffin()
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Workerdefine i32 @test(i1 %foo, i8 %b) {
6*9880d681SAndroid Build Coastguard Workerentry:
7*9880d681SAndroid Build Coastguard Worker  %a = call i8 @mcguffin()
8*9880d681SAndroid Build Coastguard Worker  br i1 %foo, label %bb1, label %bb2
9*9880d681SAndroid Build Coastguard Workerbb1:
10*9880d681SAndroid Build Coastguard Worker  br label %jt
11*9880d681SAndroid Build Coastguard Workerbb2:
12*9880d681SAndroid Build Coastguard Worker  br label %jt
13*9880d681SAndroid Build Coastguard Workerjt:
14*9880d681SAndroid Build Coastguard Worker  %x = phi i8 [%a, %bb1], [%b, %bb2]
15*9880d681SAndroid Build Coastguard Worker  %A = icmp eq i8 %x, %a
16*9880d681SAndroid Build Coastguard Worker  br i1 %A, label %rt, label %rf
17*9880d681SAndroid Build Coastguard Workerrt:
18*9880d681SAndroid Build Coastguard Worker  ret i32 7
19*9880d681SAndroid Build Coastguard Workerrf:
20*9880d681SAndroid Build Coastguard Worker  ret i32 8
21*9880d681SAndroid Build Coastguard Worker}
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