xref: /aosp_15_r20/external/llvm/test/Transforms/GVN/pre-new-inst.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -basicaa -gvn -S %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker%MyStruct = type { i32, i32 }
4*9880d681SAndroid Build Coastguard Workerdefine i8 @foo(i64 %in, i8* %arr) {
5*9880d681SAndroid Build Coastguard Worker  %addr = alloca %MyStruct
6*9880d681SAndroid Build Coastguard Worker  %dead = trunc i64 %in to i32
7*9880d681SAndroid Build Coastguard Worker  br i1 undef, label %next, label %tmp
8*9880d681SAndroid Build Coastguard Worker
9*9880d681SAndroid Build Coastguard Workertmp:
10*9880d681SAndroid Build Coastguard Worker  call void @bar()
11*9880d681SAndroid Build Coastguard Worker  br label %next
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Workernext:
14*9880d681SAndroid Build Coastguard Worker  %addr64 = bitcast %MyStruct* %addr to i64*
15*9880d681SAndroid Build Coastguard Worker  store i64 %in, i64* %addr64
16*9880d681SAndroid Build Coastguard Worker  br label %final
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Workerfinal:
19*9880d681SAndroid Build Coastguard Worker  %addr32 = getelementptr %MyStruct, %MyStruct* %addr, i32 0, i32 0
20*9880d681SAndroid Build Coastguard Worker  %idx32 = load i32, i32* %addr32
21*9880d681SAndroid Build Coastguard Worker
22*9880d681SAndroid Build Coastguard Worker; CHECK: %resptr = getelementptr i8, i8* %arr, i32 %dead
23*9880d681SAndroid Build Coastguard Worker  %resptr = getelementptr i8, i8* %arr, i32 %idx32
24*9880d681SAndroid Build Coastguard Worker  %res = load i8, i8* %resptr
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Worker  ret i8 %res
27*9880d681SAndroid Build Coastguard Worker}
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard Workerdeclare void @bar()
30